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FERMI LARGE AREA TE...
FERMI LARGE AREA TELESCOPE STUDY OF COSMIC RAYS AND THE INTERSTELLAR MEDIUM IN NEARBY MOLECULAR CLOUDS
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Ackermann, M. (author)
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Ajello, M. (author)
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Allafort, A. (author)
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show more...
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Baldini, L. (author)
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Ballet, J. (author)
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Barbiellini, G. (author)
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Bastieri, D. (author)
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Bechtol, K. (author)
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Bellazzini, R. (author)
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Berenji, B. (author)
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Blandford, R. D. (author)
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Bloom, E. D. (author)
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Bonamente, E. (author)
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Borgland, A. W. (author)
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Bottacini, E. (author)
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Brandt, T. J. (author)
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Bregeon, J. (author)
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Brigida, M. (author)
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Bruel, P. (author)
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Buehler, R. (author)
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Busetto, G. (author)
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Buson, S. (author)
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Caliandro, G. A. (author)
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Cameron, R. A. (author)
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Caraveo, P. A. (author)
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Casandjian, J. M. (author)
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Cecchi, C. (author)
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Charles, E. (author)
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Chekhtman, A. (author)
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Chiang, J. (author)
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Ciprini, S. (author)
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Claus, R. (author)
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Cohen-Tanugi, J. (author)
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- Conrad, Jan (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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D'Ammando, F. (author)
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de Angelis, A. (author)
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de Palma, F. (author)
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Dermer, C. D. (author)
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Digel, S. W. (author)
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do Couto e Silva, E. (author)
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Drell, P. S. (author)
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Drlica-Wagner, A. (author)
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Falletti, L. (author)
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Favuzzi, C. (author)
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Fegan, S. J. (author)
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Ferrara, E. C. (author)
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Focke, W. B. (author)
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Fukazawa, Y. (author)
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Fukui, Y. (author)
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Funk, S. (author)
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Fusco, P. (author)
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Gargano, F. (author)
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Gasparrini, D. (author)
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Germani, S. (author)
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Giglietto, N. (author)
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Giordano, F. (author)
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Giroletti, M. (author)
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Glanzman, T. (author)
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Godfrey, G. (author)
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Grenier, I. A. (author)
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Grondin, M. -H (author)
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Grove, J. E. (author)
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Guiriec, S. (author)
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Hadasch, D. (author)
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Hanabata, Y. (author)
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Harding, A. K. (author)
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Hayashi, K. (author)
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Horan, D. (author)
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Hou, X. (author)
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Hughes, R. E. (author)
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Itoh, R. (author)
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- Jackson, Miranda S. (author)
- KTH,Partikel- och astropartikelfysik
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Johannesson, G. (author)
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Johnson, A. S. (author)
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Kamae, T. (author)
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Katagiri, H. (author)
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Kataoka, J. (author)
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Knoedlseder, J. (author)
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Kuss, M. (author)
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Lande, J. (author)
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- Larsson, Stefan (author)
- Stockholms universitet,Fysikum,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Lee, S. -H (author)
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Lemoine-Goumard, M. (author)
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Longo, F. (author)
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Loparco, F. (author)
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Lovellette, M. N. (author)
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Lubrano, P. (author)
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Martin, P. (author)
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Mazziotta, M. N. (author)
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McEnery, J. E. (author)
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Mehault, J. (author)
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Michelson, P. F. (author)
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Mitthumsiri, W. (author)
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Mizuno, T. (author)
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Moiseev, A. A. (author)
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Monte, C. (author)
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Monzani, M. E. (author)
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Morselli, A. (author)
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Moskalenko, I. V. (author)
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Murgia, S. (author)
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Naumann-Godo, M. (author)
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Nemmen, R. (author)
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Nishino, S. (author)
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Norris, J. P. (author)
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Nuss, E. (author)
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Ohno, M. (author)
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Ohsugi, T. (author)
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Okumura, A. (author)
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Omodei, N. (author)
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Orlando, E. (author)
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Ormes, J. F. (author)
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Ozaki, M. (author)
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Paneque, D. (author)
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Panetta, J. H. (author)
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Parent, D. (author)
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Pesce-Rollins, M. (author)
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Pierbattista, M. (author)
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Piron, F. (author)
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Pivato, G. (author)
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Porter, T. A. (author)
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Raino, S. (author)
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Rando, R. (author)
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Razzano, M. (author)
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Reimer, A. (author)
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Reimer, O. (author)
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Romoli, C. (author)
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Roth, M. (author)
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Sada, T. (author)
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Sadrozinski, H. F. -W (author)
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Sanchez, D. A. (author)
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Sbarra, C. (author)
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Sgro, C. (author)
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Siskind, E. J. (author)
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Spandre, G. (author)
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Spinelli, P. (author)
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Strong, A. W. (author)
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Suson, D. J. (author)
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Takahashi, H. (author)
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Takahashi, T. (author)
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Tanaka, T. (author)
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Thayer, J. G. (author)
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Thayer, J. B. (author)
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Thompson, D. J. (author)
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Tibaldo, L. (author)
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Tibolla, O. (author)
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Tinivella, M. (author)
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Torres, D. F. (author)
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Tosti, G. (author)
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Tramacere, A. (author)
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Troja, E. (author)
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Uchiyama, Y. (author)
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Uehara, T. (author)
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Usher, T. L. (author)
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Vandenbroucke, J. (author)
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Vasileiou, V. (author)
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Vianello, G. (author)
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Vitale, V. (author)
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Waite, A. P. (author)
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Wang, P. (author)
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Winer, B. L. (author)
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Wood, K. S. (author)
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Yamamoto, H. (author)
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- Yang, Zhaoyu (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Zimmer, Stephan (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 755:1
- Related links:
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https://arxiv.org/ab...
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show more...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- We report an analysis of the interstellar gamma-ray emission from the Chamaeleon, R Coronae Australis (R CrA), and Cepheus and Polaris flare regions with the Fermi Large Area Telescope. They are among the nearest molecular cloud complexes, within similar to 300 pc from the solar system. The gamma-ray emission produced by interactions of cosmic rays (CRs) and interstellar gas in those molecular clouds is useful to study the CR densities and distributions of molecular gas close to the solar system. The obtained gamma-ray emissivities above 250 MeV are (5.9 +/- 0.1(stat-1.0sys)(+0.9)) x 10(-27) photons s(-1) sr(-1) H-atom(-1), (10.2 +/- 0.4(stat-1.7sys)(+1.2)) x 10(-27) photons s(-1) sr(-1) H-atom(-1), and (9.1 +/- 0.3(stat-0.6sys)(+1.5)) x 10(-27) photons s(-1) sr(-1) H-atom(-1) for the Chamaeleon, R CrA, and Cepheus and Polaris flare regions, respectively. Whereas the energy dependences of the emissivities agree well with that predicted from direct CR observations at the Earth, the measured emissivities from 250 MeV to 10 GeV indicate a variation of the CR density by similar to 20% in the neighborhood of the solar system, even if we consider systematic uncertainties. The molecular mass calibrating ratio, X-CO = N(H-2)/W-CO, is found to be (0.96 +/- 0.06(stat-0.12sys)(+0.15)) x 10(20) H-2-molecule cm(-2) (K km s(-1))(-1), (0.99 +/- 0.08(stat-0.10sys)(+0.18)) x 10(20) H-2-molecule cm(-2) (K km s(-1))(-1), and (0.63 +/- 0.02(stat-0.07sys)(+0.09)) x 10(20) H-2-molecule cm(-2) (K km s(-1))(-1) for the Chamaeleon, R CrA, and Cepheus and Polaris flare regions, respectively, suggesting a variation of X-CO in the vicinity of the solar system. From the obtained values of X-CO, the masses of molecular gas traced by W-CO in the Chamaeleon, R CrA, and Cepheus and Polaris flare regions are estimated to be similar to 5 x 10(3)M(circle dot), similar to 10(3)M(circle dot), and similar to 3.3 x 10(4)M(circle dot), respectively. A comparable amount of gas not traced well by standard Hi and CO surveys is found in the regions investigated.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- cosmic rays
- gamma rays: ISM
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Ackermann, M.
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Ajello, M.
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Allafort, A.
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Baldini, L.
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Ballet, J.
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Barbiellini, G.
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show more...
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Bastieri, D.
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Bechtol, K.
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Bellazzini, R.
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Berenji, B.
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Blandford, R. D.
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Bloom, E. D.
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Bonamente, E.
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Borgland, A. W.
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Bottacini, E.
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Brandt, T. J.
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Bregeon, J.
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Brigida, M.
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Bruel, P.
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Buehler, R.
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Busetto, G.
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Buson, S.
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Caliandro, G. A.
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Cameron, R. A.
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Caraveo, P. A.
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Casandjian, J. M ...
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Cecchi, C.
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Charles, E.
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Chekhtman, A.
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Chiang, J.
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Ciprini, S.
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Claus, R.
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Cohen-Tanugi, J.
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Conrad, Jan
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D'Ammando, F.
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de Angelis, A.
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de Palma, F.
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Dermer, C. D.
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Digel, S. W.
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do Couto e Silva ...
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Drell, P. S.
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Drlica-Wagner, A ...
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Falletti, L.
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Favuzzi, C.
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Fegan, S. J.
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Ferrara, E. C.
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Focke, W. B.
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Fukazawa, Y.
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Fukui, Y.
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Funk, S.
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Fusco, P.
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Gargano, F.
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Gasparrini, D.
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Germani, S.
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Giglietto, N.
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Giordano, F.
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Giroletti, M.
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Glanzman, T.
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Godfrey, G.
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Grenier, I. A.
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Grondin, M. -H
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Grove, J. E.
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Guiriec, S.
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Hadasch, D.
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Hanabata, Y.
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Harding, A. K.
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Hayashi, K.
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Horan, D.
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Hou, X.
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Hughes, R. E.
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Itoh, R.
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Jackson, Miranda ...
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Johannesson, G.
-
Johnson, A. S.
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Kamae, T.
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Katagiri, H.
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Kataoka, J.
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Knoedlseder, J.
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Kuss, M.
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Lande, J.
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Larsson, Stefan
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Lee, S. -H
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Lemoine-Goumard, ...
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Longo, F.
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Loparco, F.
-
Lovellette, M. N ...
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Lubrano, P.
-
Martin, P.
-
Mazziotta, M. N.
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McEnery, J. E.
-
Mehault, J.
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Michelson, P. F.
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Mitthumsiri, W.
-
Mizuno, T.
-
Moiseev, A. A.
-
Monte, C.
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Monzani, M. E.
-
Morselli, A.
-
Moskalenko, I. V ...
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Murgia, S.
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Naumann-Godo, M.
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Nemmen, R.
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Nishino, S.
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Norris, J. P.
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Nuss, E.
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Ohno, M.
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Ohsugi, T.
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Okumura, A.
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Omodei, N.
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Orlando, E.
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Ormes, J. F.
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Ozaki, M.
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Paneque, D.
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Panetta, J. H.
-
Parent, D.
-
Pesce-Rollins, M ...
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Pierbattista, M.
-
Piron, F.
-
Pivato, G.
-
Porter, T. A.
-
Raino, S.
-
Rando, R.
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Razzano, M.
-
Reimer, A.
-
Reimer, O.
-
Romoli, C.
-
Roth, M.
-
Sada, T.
-
Sadrozinski, H. ...
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Sanchez, D. A.
-
Sbarra, C.
-
Sgro, C.
-
Siskind, E. J.
-
Spandre, G.
-
Spinelli, P.
-
Strong, A. W.
-
Suson, D. J.
-
Takahashi, H.
-
Takahashi, T.
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Tanaka, T.
-
Thayer, J. G.
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Thayer, J. B.
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Thompson, D. J.
-
Tibaldo, L.
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Tibolla, O.
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Tinivella, M.
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Torres, D. F.
-
Tosti, G.
-
Tramacere, A.
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Troja, E.
-
Uchiyama, Y.
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Uehara, T.
-
Usher, T. L.
-
Vandenbroucke, J ...
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Vasileiou, V.
-
Vianello, G.
-
Vitale, V.
-
Waite, A. P.
-
Wang, P.
-
Winer, B. L.
-
Wood, K. S.
-
Yamamoto, H.
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Yang, Zhaoyu
-
Zimmer, Stephan
-
show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Astrophysical Jo ...
- By the university
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Stockholm University
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Royal Institute of Technology