■ - nexus7

Dark Energy: Is It Merely An Illusion?
"Dark energy is at the heart of one of the greatest mysteries of modern physics, but it may be nothing more than an illusion, according physicists at Oxford University."
http://www.sciencedaily.com/releases/2008/09/080926184749.htm

Dark matter makes galaxy's stars live long and prosper- New Scientist
"Once caught, the dark matter particles would collide with gas in the star, losing energy so they would eventually settle at the star's centre. There, the WIMPs would hit each other and annihilate, creating a blast of energy that would puff up the star."
http://space.newscientist.com/article/dn14865-dark-matter-makes-galaxys-stars-live-long-and-prosper.html?DCMP=ILC-hmts&nsref=space1_head_Dark%20matter%20makes%20galaxy%27s%20stars%20live%20long%20and%20prosper

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

Galaxy flow hints at huge masses over cosmic horizon - 25 Sep New Scientist
"Journal reference: Astrophysical Journal Letters"
http://www.newscientist.com/article/dn14814-galaxy-flow-hints-at-huge-masses-over-cosmic-horizon.html

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

somewhere between the constellations of Centaurus and Vela/
Galaxies On The Move
"“We expected to find something completely different,” says Alexander Kashlinsky, an astrophysicist at NASA’s Goddard Space Flight Center in Greenbelt, Md. "It’s basically a slope across the universe,” in a direction somewhere between the constellations of Centaurus and Vela." Science News
http://www.sciencenews.org/view/generic/id/36959/title/Galaxies_on_the_move

Universe Tugged by Mysterious 'Dark Flow': Discovery News
"What's being called a dark flow appears to be pulling vast clusters of galaxies toward a 20-degree-wide patch of sky between the constellations of Centaurus and Vela."
http://dsc.discovery.com/news/2008/09/25/universe-dark-flow.html

MACSJ0025.4-1222

MACSJ0025.4-1222, a cluster showing a clear separation between dark and ordinary matter
A Clash of Clusters Provides Another Clue to Dark Matter
"A powerful collision of galaxy clusters has been captured with NASA's Chandra X-ray Observatory and Hubble Space Telescope.
Like its famous cousin, the so-called Bullet Cluster, this clash of clusters provides striking evidence for dark matter and insight into its properties. "
http://www.nasa.gov/mission_pages/chandra/news/08-111.html

Bullet Cluster

The galaxy cluster 1E 0657-56 (known as the Bullet Cluster)
Universe Tugged by Mysterious 'Dark Flow': Discovery News
"The galaxy cluster 1E 0657-56 (known as the Bullet Cluster) lies 3.8 billion light-years away. It's one of hundreds that appear to be carried along by a mysterious cosmic flow."
http://dsc.discovery.com/news/2008/09/25/galaxy-cluster-zoom.html

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

CEATEC JAPAN 2008：1日でCEATECを満喫するためのムービーガイド -ITmedia
"9月30日に開幕したCEATEC JAPAN 2008もいよいよ10月4日まで　幕張"
http://plusd.itmedia.co.jp/lifestyle/articles/0810/03/news048.html

ＡＩＧが日本のアリコなど生保3社を売却へ | Reuters
"　ＡＩＧは３社の売却により、ニューヨーク連邦準備銀行から供与された信用枠の借入残高を返済する。ＡＩＧは２００８年９月３０日時点で、信用枠から６１０億ドルの資金を借り入れている。"
http://jp.reuters.com/article/topNews/idJPJAPAN-34092520081003

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with redshifts z > 1. As Faraday rotation alone, however, determines neither the magnitude nor the redshift of the magnetic field, the strength of galactic magnetic fields at redshifts z > 0 remains uncertain. Here we report a measurement of a magnetic field of B approximately 84 muG in a galaxy at z = 0.692, using the same Zeeman-splitting technique that revealed an average value of B = 6 muG in the neutral interstellar gas of our Galaxy4. This is unexpected, as the leading theory of magnetic field generation, the mean-field dynamo model, predicts large-scale magnetic fields to be weaker in the past rather than stronger5."
http://www.nature.com/nature/journal/v455/n7213/full/nature07264.html

The Astrophysical Journal Letters
"A Measurement of Large-Scale Peculiar Velocities of Clusters of Galaxies: Results and Cosmological Implications A. Kashlinsky,1
ABSTRACT
Peculiar velocities of clusters of galaxies can be measured by studying the fluctuations in the cosmic microwave background (CMB) generated by the scattering of the microwave photons by the hot X-ray-emitting gas inside clusters. While for individual clusters such measurements result in large errors, a large statistical sample of clusters allows one to study cumulative quantities dominated by the overall bulk flow of the sample with the statistical errors integrating down. We present results from such a measurement using the largest all-sky X-ray cluster catalog combined to date and the 3 yr WMAP CMB data. We find a strong and coherent bulk flow on scales out to at least 300 Mpc, the limit of our catalog. This flow is difficult to explain by gravitational evolution within the framework of the concordance ΛCDM model and may be indicative of the tilt exerted across the entire current horizon by far-away pre-inflationary inhomogeneities."
http://www.journals.uchicago.edu/doi/abs/10.1086/592947

旧聞集

Scientists glimpse 'dark flow' lurking beyond the edge of the universe - Telegraph
http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/09/24/scispace124.xml

'Dark Flow': between the constellations of Centaurus and Vela
Another force lurks in the dark
http://arstechnica.com/journals/science.ars/2008/09/25/another-one-bites-the-dark

Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars: Sep. 25
http://www.sciencedaily.com/releases/2008/09/080918192941.htm

"An 84-muG magnetic field in a galaxy at redshift z = 0.692
Abstract Access : : Nature
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of stars1. The field associated with ionized interstellar gas has been determined through observations of pulsars in our Galaxy. Radio-frequency measurements of pulse dispersion and the rotation of the plane of linear polarization, that is, Faraday rotation, yield an average value for the magnetic field of B approximately 3 muG (ref. 2). The possible detection of Faraday rotation of linearly polarized photons emitted by high-redshift quasars3 suggests similar magnetic fields are present in foreground galaxies with red