Live video from your Android device on Ustream AMS-02 Dark Matter衝突時の陽電子を捉えたか
暗黒物質の衝突によるものか
パルサー由来のものか 決定はできず
今後の解析にお預けに・・・
AMS-02の精度ではムズカしいかも の話も
「宇宙は究極の実験室」Samuel Ting
AMS-02 (素人考えで)暗黒物質にあと数歩届かずって とこでしょうか・・・
CERN Webcast
"Recent results from the AMS experiment by Prof. Ting Samuel
03rd Apr 2013 - 17:00"
by Prof. Samuel Ting (Massachusetts Inst. of Technology (US))
Wednesday, April 3, 2013 from 17:00 to 18:00 (Europe/Zurich) at CERN ( 500-1-001 - Main Auditorium )
http://webcast.web.cern.ch/webcast/embed.php?event=244334
搭載コンピュータ 耐宇宙線仕様 高価 でもとっても古く感じますです(-_-;) 400MH 設計時は最新
112GB Flash Memory耐宇宙線仕様 とっても高価そう・・・
AMS experiment measures antimatter excess in space | CERN
"The AMS results are based on some 25 billion recorded events, including 400,000 positrons with energies between 0.5 GeV and 350 GeV, recorded over a year and a half. This represents the largest collection of antimatter particles recorded in space. The positron fraction increases from 10 GeV to 250 GeV, with the data showing the slope of the increase reducing by an order of magnitude over the range 20-250 GeV. The data also show no significant variation over time, or any preferred incoming direction. "
http://home.web.cern.ch/about/updates/2013/04/ams-experiment-measures-antimatter-excess-space
AMS-02稼働前 2009年時の推定値
上はAMS-02稼働前 2009年時の推定値
上は普通の宇宙線衝突との差異
2009年時のSamuel Ting解説
Test of the Standard Model in Space: The AMS Experiment on the ISS :CERNのアーカイブVideoより
宇宙線衝突とDark Matter衝突のpositronとの差異arXiv:0810.5344
[0810.5344] The PAMELA Positron Excess from Annihilations into a Light Boson
"Recently published results from the PAMELA experiment have shown conclusive evidence for an excess of positrons at high (~ 10 - 100 GeV) energies, confirming earlier indications from HEAT and AMS-01. "
http://arxiv.org/abs/0810.5344
protonかDark Matter衝突のpositronかを区別する
TRD Estimator
TRD Estimator(83.2-100 GeV)
補正はこうやって、ああやって、らしい
先駆の観測衛星PAMELA Fermiの観測データとの比較
どれも高エネルギー陽電子が理論値よりも多い現象
先駆の各種観測データほぼ全てとの重ね合せて
A comparison of AMS results with recent published measurements. With its magnet and precision particle detectors, high accuracy and statistics, the first result of AMS, based on only ~10% of the total data expected, is clearly distinguished from earlier experiments
http://www.ams02.org/2013/04/first-results-from-the-alpha-magnetic-spectrometer-ams-experiment/
Figure 2
AMS-02 » Archive » First Result from the Alpha Magnetic Spectrometer Experiment
"Figure 2 illustrates the AMS data presented in the first publication.
The positron fraction measured by AMS demonstrates excellent agreement with the model described below. Even with the high statistics, 6.8 million events, and accuracy of AMS, the fraction shows no fine structure.
The exact shape of the spectrum, as shown in Figure 2, extended to higher energies, will ultimately determine whether this spectrum originates from the collision of dark matter particles or from pulsars in the galaxy. The high level of accuracy of this data shows that AMS will soon resolve this issue."
http://www.ams02.org/2013/04/first-results-from-the-alpha-magnetic-spectrometer-ams-experiment/
暗黒物質の衝突によるものか
パルサー由来のものか 決定はできず
結論
20
おわりに
21
暗黒物質の衝突によるものか
パルサー由来のものか 決定はできず
今後の解析にお預けに・・・
AMS-02の精度ではムズカしいかも で終わりました
以上 CERN Webcast "Recent results from the AMS experiment by Prof. Ting Samuel ( 500-1-001 - Main Auditorium )
03rd Apr 2013 from 17:00 to 18:00 "
by Prof. Samuel Ting (Massachusetts Inst. of Technology (US)
