Kepler-11*Kepler-11
新発見の6個の惑星：ケプラー望遠鏡の最新技術で発見された、太陽類似星を周回する密な惑星系
Nature 今週のハイライト： Cover Story：
http://www.natureasia.com/japan/nature/updates/index.php?id=81740&issue=7332
http://www.youtube.com/watch?v=jQhIoDxF2nY
NASA Finds Earth-Size Planet Candidates In Habitable Zone, Six Planet System
http://www.nasa.gov/home/hqnews/2011/feb/HQ_11-030_Kepler_Update.html
NASA's Kepler Spacecraft Discovers Extraordinary New Planetary System
"Scientists using NASA's Kepler, a space telescope, recently discovered six planets made of a mix of rock and gases orbiting a single sun-like star, known as Kepler-11, which is located approximately 2,000 light years from Earth"
http://www.nasa.gov/mission_pages/kepler/news/new_planetary_system.html
最多6個の惑星系「ケプラー11」を発見、系外惑星候補も1200個以上見つかる アストロアーツ
http://www.astroarts.co.jp/news/2011/02/03kepler/
Kepler Mission
http://kepler.nasa.gov/
Quick Kepler update - The Planetary Society Blog
http://www.planetary.org/blog/article/00001870/
Twitter / NASAKepler
http://twitter.com/NASAKepler
k
Kaluza-Klein electron-positron pairs
LHC
physics @ nature.com
"K Agasheらは、発見されれば、L RandallとR Sundrumが提案した空間の歪んだ余剰次元の存在を示す証拠となる粒子「Kaluza-Klein（KK）グルーオン」の痕跡に焦点を当てた。 KKグルーオンを発見することは容易ではないだろう。
KKグルーオンは「proton-phobic（陽子恐怖症）」で、生成が非常に難しい。また、トップクォークと強く結合するが、トップ-反トップ対への崩壊はブロードで、より一般的な標準モデルの過程で生じるトップ対と区別しにくい。トップクォークの偏極を利用して、いわゆる前後方非対称性を発見することは巧妙な方法であろう、とAgasheらは述べている。
最大で4 TeVの質量をもつKKグルーオンは約100インバースフェムトバーンのデータで明らかになる可能性があり、このデータはLHCの最初の数年間の運転で蓄積されるであろう。 "
http://www.natureasia.com/japan/physics/updates/200802.php
1. "An excess of cosmic ray electrons at energies of 300–800 GeV"
J. Chang, J. H. Adams Jr, H. S. Ahn, G. L. Bashindzhagyan, M. Christl, O. Ganel, T. G. Guzik, J. Isbert, K. C. Kim, E. N. Kuznetsov, M. I. Panasyuk, A. D. Panov, W. K. H. Schmidt, E. S. Seo, N. V. Sokolskaya, J. W. Watts, J. P. Wefel, J. Wu & V. I. Zatsepin
doi:10.1038/nature07477
恐るべし^^「南極での気球観測」
AstrophysicsA message from the dark side : Nature
"A high-altitude balloon-borne experiment offers the latest hints as to what it could be."
http://www.nature.com/nature/journal/v456/n7220/full/456329a.html
LHCはコケて、休眠中でも、
南極で上げる気球は、自然にぐるっと回って帰って来る^^ゞ
Wefel's team sent a balloon carrying the "ATIC" particle detector aloft over Antarctica,
ひょっとすると、これが今年一番の"掘り出し物"かも？
「宇宙背景放射」の時と同じ手^^ゞ またまた安価な南極での気球観測で
"The high-energy electrons detected during the balloon’s 30 days aloft matched predictions of the kinds of particles that would be produced by the collision of theoretical dark matter particles, known as “Kaluza-Klein” particles."
http://blogs.discovermagazine.com/80beats/2008/11/20/have-researchers-found-dark-matters-signature-over-antarctica/
Kaluza–Klein theory - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Kaluza-Klein
"Kaluza-Klein" electron-positron pairs resulting from the annihilation of these WIMPS.
"If the Kaluza–Klein annihilation explanation proves to be correct, this will necessitate a fuller investigation of such multidimensional spaces, with potentially important implications for our understanding of the Universe,"
Physicists Find Dark Matter, or Something Even More Strange | Wired Science from Wired.com
"John Wefel of Louisiana State University and colleagues report in Nature Wednesday that they could have detected "Kaluza-Klein" electron-positron pairs resulting from the annihilation of these WIMPS.
The KK particles are predicted by multiple-dimension theories of the universe and have long-been a leading candidate as the substance of dark matter."
http://blog.wired.com/wiredscience/2008/11/darkmatter.html
Dark Matter Proof Found Over Antarctica?
http://news.nationalgeographic.com/news/2008/11/081119-dark-matter-antarctica.html
Faster than the speed of dark: annihilations above Antarctica
"It is though that the electrons could be coming from annihilations of either neutralinos―a flavor of weakly interacting massive particle (WIMP) that appear in supersymmetric theories―or Kaluza-Klein (KK) particles. These latter particles predicted by a theory that postulates extra, curled up, dimensions in addition to the four we commonly observe. "
http://arstechnica.com/news.ars/post/20081119-faster-than-the-speed-of-dark-annihilations-above-antarctica.html
Clump of dark matter may loom near solar system |Reuters
http://www.reuters.com/article/scienceNews/idUSTRE4AI80X20081119
Mysterious electrons may be sign of dark matter - space - 19 November 2008 - New Scientist
http://www.newscientist.com/article/dn16085-mysterious-electrons-may-be-sign-of-dark-matter.html
↓各報道のまとめ
Have Researchers Found Dark Matter’s Signature Over Antarctica? | Discover Magazine
http://blogs.discovermagazine.com/80beats/2008/11/20/have-researchers-found-dark-matters-signature-over-antarctica/
Mysterious Source of High-Energy Cosmic Radiation Discovered - MarketWatch
http://www.marketwatch.com/news/story/Mysterious-Source-High-Energy-Cosmic/story.aspx?guid=%7B9C82FC7B-C7D0-4978-B3FF-9290ED0CFB25%7D
Scientists ponder mysterious source of cosmic rays • The Register
http://www.theregister.co.uk/2008/11/20/cosmic_ray_electrons/
これはPAMELA's results
[0810.4995] Observation of an anomalous positron abundance in the cosmic radiation
"the first indirect evidence of dark matter particle annihilations, or the first observation of positron production from near-by pulsars."
http://arxiv.org/abs/0810.4995
Wefel agrees that it is too early to say for certain whether ATIC and PAMELA have seen dark matter. "You cannot make a hard and fast claim," he says. "The case is still open."
But more evidence may come soon. NASA's Fermi telescope (formerly known as GLAST)
In addition, Fermi may be able to spot γ-rays that have come from dark-matter annihilations. "By the spring of 2009, we'll have a lot more information," Morselli says.
Electron 'bump' may confirm dark matter : Nature News
http://www.nature.com/news/2008/081119/full/456290b.html
Long-Lived Volcanism on the Lunar Farside Revealed by SELENE Terrain Camera -- Haruyama et al., 10.1126/science.1163382 -- Science
......obtained by the Terrain Camera on SELENE (KAGUYA). Most mare volcanism that formed mare...obtained by the Terrain Camera on SELENE (KAGUYA). Most mare volcanism that formed mare...obtained by the Terrain Camera on SELENE (KAGUYA).
http://www.sciencemag.org/cgi/content/abstract/sci;1163382v1?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=kaguya&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT
月の裏側：２５億年前まで火山活動あった…「かぐや」観測(毎日新聞)
"表側では十数億年前まで火山活動が続いたが、裏側では約３０億年前に終息したと考えられていた。ＪＡＸＡ ６日付の米科学誌サイエンス"
http://mainichi.jp/photo/archive/news/2008/11/07/20081107k0000m040134000c.html
Kaluza-Klein electron-positron pairs
LHC
physics @ nature.com
"K Agasheらは、発見されれば、L RandallとR Sundrumが提案した空間の歪んだ余剰次元の存在を示す証拠となる粒子「Kaluza-Klein（KK）グルーオン」の痕跡に焦点を当てた。 KKグルーオンを発見することは容易ではないだろう。
KKグルーオンは「proton-phobic（陽子恐怖症）」で、生成が非常に難しい。また、トップクォークと強く結合するが、トップ-反トップ対への崩壊はブロードで、より一般的な標準モデルの過程で生じるトップ対と区別しにくい。トップクォークの偏極を利用して、いわゆる前後方非対称性を発見することは巧妙な方法であろう、とAgasheらは述べている。
最大で4 TeVの質量をもつKKグルーオンは約100インバースフェムトバーンのデータで明らかになる可能性があり、このデータはLHCの最初の数年間の運転で蓄積されるであろう。 "
http://www.natureasia.com/japan/physics/updates/200802.php
1. "An excess of cosmic ray electrons at energies of 300–800 GeV"
J. Chang, J. H. Adams Jr, H. S. Ahn, G. L. Bashindzhagyan, M. Christl, O. Ganel, T. G. Guzik, J. Isbert, K. C. Kim, E. N. Kuznetsov, M. I. Panasyuk, A. D. Panov, W. K. H. Schmidt, E. S. Seo, N. V. Sokolskaya, J. W. Watts, J. P. Wefel, J. Wu & V. I. Zatsepin
doi:10.1038/nature07477
恐るべし^^「南極での気球観測」
AstrophysicsA message from the dark side : Nature
"A high-altitude balloon-borne experiment offers the latest hints as to what it could be."
http://www.nature.com/nature/journal/v456/n7220/full/456329a.html
LHCはコケて、休眠中でも、
南極で上げる気球は、自然にぐるっと回って帰って来る^^ゞ
Wefel's team sent a balloon carrying the "ATIC" particle detector aloft over Antarctica,
ひょっとすると、これが今年一番の"掘り出し物"かも？
「宇宙背景放射」の時と同じ手^^ゞ またまた安価な南極での気球観測で
"The high-energy electrons detected during the balloon’s 30 days aloft matched predictions of the kinds of particles that would be produced by the collision of theoretical dark matter particles, known as “Kaluza-Klein” particles."
http://blogs.discovermagazine.com/80beats/2008/11/20/have-researchers-found-dark-matters-signature-over-antarctica/
Kaluza–Klein theory - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Kaluza-Klein
"Kaluza-Klein" electron-positron pairs resulting from the annihilation of these WIMPS.
"If the Kaluza–Klein annihilation explanation proves to be correct, this will necessitate a fuller investigation of such multidimensional spaces, with potentially important implications for our understanding of the Universe,"
Physicists Find Dark Matter, or Something Even More Strange | Wired Science from Wired.com
"John Wefel of Louisiana State University and colleagues report in Nature Wednesday that they could have detected "Kaluza-Klein" electron-positron pairs resulting from the annihilation of these WIMPS.
The KK particles are predicted by multiple-dimension theories of the universe and have long-been a leading candidate as the substance of dark matter."
http://blog.wired.com/wiredscience/2008/11/darkmatter.html
Dark Matter Proof Found Over Antarctica?
http://news.nationalgeographic.com/news/2008/11/081119-dark-matter-antarctica.html
Faster than the speed of dark: annihilations above Antarctica
"It is though that the electrons could be coming from annihilations of either neutralinos―a flavor of weakly interacting massive particle (WIMP) that appear in supersymmetric theories―or Kaluza-Klein (KK) particles. These latter particles predicted by a theory that postulates extra, curled up, dimensions in addition to the four we commonly observe. "
http://arstechnica.com/news.ars/post/20081119-faster-than-the-speed-of-dark-annihilations-above-antarctica.html
Clump of dark matter may loom near solar system |Reuters
http://www.reuters.com/article/scienceNews/idUSTRE4AI80X20081119
Mysterious electrons may be sign of dark matter - space - 19 November 2008 - New Scientist
http://www.newscientist.com/article/dn16085-mysterious-electrons-may-be-sign-of-dark-matter.html
↓各報道のまとめ
Have Researchers Found Dark Matter’s Signature Over Antarctica? | Discover Magazine
http://blogs.discovermagazine.com/80beats/2008/11/20/have-researchers-found-dark-matters-signature-over-antarctica/
Mysterious Source of High-Energy Cosmic Radiation Discovered - MarketWatch
http://www.marketwatch.com/news/story/Mysterious-Source-High-Energy-Cosmic/story.aspx?guid=%7B9C82FC7B-C7D0-4978-B3FF-9290ED0CFB25%7D
Scientists ponder mysterious source of cosmic rays • The Register
http://www.theregister.co.uk/2008/11/20/cosmic_ray_electrons/
これはPAMELA's results
[0810.4995] Observation of an anomalous positron abundance in the cosmic radiation
"the first indirect evidence of dark matter particle annihilations, or the first observation of positron production from near-by pulsars."
http://arxiv.org/abs/0810.4995
Wefel agrees that it is too early to say for certain whether ATIC and PAMELA have seen dark matter. "You cannot make a hard and fast claim," he says. "The case is still open."
But more evidence may come soon. NASA's Fermi telescope (formerly known as GLAST)
In addition, Fermi may be able to spot γ-rays that have come from dark-matter annihilations. "By the spring of 2009, we'll have a lot more information," Morselli says.
Electron 'bump' may confirm dark matter : Nature News
http://www.nature.com/news/2008/081119/full/456290b.html
Long-Lived Volcanism on the Lunar Farside Revealed by SELENE Terrain Camera -- Haruyama et al., 10.1126/science.1163382 -- Science
......obtained by the Terrain Camera on SELENE (KAGUYA). Most mare volcanism that formed mare...obtained by the Terrain Camera on SELENE (KAGUYA). Most mare volcanism that formed mare...obtained by the Terrain Camera on SELENE (KAGUYA).
http://www.sciencemag.org/cgi/content/abstract/sci;1163382v1?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=kaguya&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT
月の裏側：２５億年前まで火山活動あった…「かぐや」観測(毎日新聞)
"表側では十数億年前まで火山活動が続いたが、裏側では約３０億年前に終息したと考えられていた。ＪＡＸＡ ６日付の米科学誌サイエンス"
http://mainichi.jp/photo/archive/news/2008/11/07/20081107k0000m040134000c.html
K
