Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS
The balloon-borne experiment with a superconducting spectrometer (BESS) has performed cosmic-ray observations as a US-Japan cooperative space science program, and has provided fundamental data on cosmic rays to study elementary particle phenomena in the early Universe. The BESS experiment has measur...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20120014324 2023-05-15T14:05:05+02:00 Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS Kim, K. C. Kumazawa, T. Itazaki, A. Yoshimura, K. Matsuda, S. Mitchell, J. W. Abe, K. Makida, M. Haino, S. Nozaki, M. Sasaki, M. Hasegawa, M. Moiseev, A. A. Streitmatter, R. E. Fuke, H. Lee, M. H. Matsumoto, K. Myers, Z. Yamamoto, A. Kusumoto, A. Hams, T. Horikoshi, A. Matsukawa, Y. Nishimura, J. Orito, R. Unclassified, Unlimited, Publicly available August 05, 2011 application/pdf http://hdl.handle.net/2060/20120014324 unknown Document ID: 20120014324 http://hdl.handle.net/2060/20120014324 Copyright, Distribution as joint owner in the copyright CASI Astronomy GSFC.JA.6882.2012 2011 ftnasantrs 2019-07-21T06:19:57Z The balloon-borne experiment with a superconducting spectrometer (BESS) has performed cosmic-ray observations as a US-Japan cooperative space science program, and has provided fundamental data on cosmic rays to study elementary particle phenomena in the early Universe. The BESS experiment has measured the energy spectra of cosmic-ray antiprotons to investigate signatures of possible exotic origins such as dark matter candidates or primordial black holes. and searched for heavier antinuclei that might reach Earth from antimatter domains formed in the early Universe. The apex of the BESS program was reached with the Antarctic flight of BESS-Polar II, during the 2007- 2008 Austral Summer, that obtained over 4.7 billion cosmic-ray events from 24.5 days of observation. The flight took place at the expected solar minimum, when the sensitivity of the low-energy antiproton measurements to a primary source is greatest. Here, we report the scientific restults, focusing on the long-duration flights of BESS-Polar I (2004) and BESS-Polar II (2007-2008). Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic Austral |
institution |
Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Astronomy |
spellingShingle |
Astronomy Kim, K. C. Kumazawa, T. Itazaki, A. Yoshimura, K. Matsuda, S. Mitchell, J. W. Abe, K. Makida, M. Haino, S. Nozaki, M. Sasaki, M. Hasegawa, M. Moiseev, A. A. Streitmatter, R. E. Fuke, H. Lee, M. H. Matsumoto, K. Myers, Z. Yamamoto, A. Kusumoto, A. Hams, T. Horikoshi, A. Matsukawa, Y. Nishimura, J. Orito, R. Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS |
topic_facet |
Astronomy |
description |
The balloon-borne experiment with a superconducting spectrometer (BESS) has performed cosmic-ray observations as a US-Japan cooperative space science program, and has provided fundamental data on cosmic rays to study elementary particle phenomena in the early Universe. The BESS experiment has measured the energy spectra of cosmic-ray antiprotons to investigate signatures of possible exotic origins such as dark matter candidates or primordial black holes. and searched for heavier antinuclei that might reach Earth from antimatter domains formed in the early Universe. The apex of the BESS program was reached with the Antarctic flight of BESS-Polar II, during the 2007- 2008 Austral Summer, that obtained over 4.7 billion cosmic-ray events from 24.5 days of observation. The flight took place at the expected solar minimum, when the sensitivity of the low-energy antiproton measurements to a primary source is greatest. Here, we report the scientific restults, focusing on the long-duration flights of BESS-Polar I (2004) and BESS-Polar II (2007-2008). |
format |
Other/Unknown Material |
author |
Kim, K. C. Kumazawa, T. Itazaki, A. Yoshimura, K. Matsuda, S. Mitchell, J. W. Abe, K. Makida, M. Haino, S. Nozaki, M. Sasaki, M. Hasegawa, M. Moiseev, A. A. Streitmatter, R. E. Fuke, H. Lee, M. H. Matsumoto, K. Myers, Z. Yamamoto, A. Kusumoto, A. Hams, T. Horikoshi, A. Matsukawa, Y. Nishimura, J. Orito, R. |
author_facet |
Kim, K. C. Kumazawa, T. Itazaki, A. Yoshimura, K. Matsuda, S. Mitchell, J. W. Abe, K. Makida, M. Haino, S. Nozaki, M. Sasaki, M. Hasegawa, M. Moiseev, A. A. Streitmatter, R. E. Fuke, H. Lee, M. H. Matsumoto, K. Myers, Z. Yamamoto, A. Kusumoto, A. Hams, T. Horikoshi, A. Matsukawa, Y. Nishimura, J. Orito, R. |
author_sort |
Kim, K. C. |
title |
Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS |
title_short |
Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS |
title_full |
Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS |
title_fullStr |
Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS |
title_full_unstemmed |
Search for Cosmic-Ray Antiproton Origins and for Cosmological Antimatter with BESS |
title_sort |
search for cosmic-ray antiproton origins and for cosmological antimatter with bess |
publishDate |
2011 |
url |
http://hdl.handle.net/2060/20120014324 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic Austral |
geographic_facet |
Antarctic The Antarctic Austral |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 20120014324 http://hdl.handle.net/2060/20120014324 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766276723896221696 |