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- Abdo, A. A. (author)
PULSED GAMMA-RAYS FROM PSR J2021+3651 WITH THE FERMI LARGE AREA TELESCOPE
- Article/chapterEnglish2009
Publisher, publication year, extent ...
- 2009
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:hik-2823
- https://urn.kb.se/resolve?urn=urn:nbn:se:hik:diva-2823URI
- https://doi.org/10.1088/0004-637X/700/2/1059DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- We report the detection of pulsed gamma-rays from the young, spin-powered radio pulsar PSR J2021+3651 using data acquired with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (formerly GLAST). The light curve consists of two narrow peaks of similar amplitude separated by 0.468 +/- 0.002 in phase. The first peak lags the maximum of the 2 GHz radio pulse by 0.162 +/- 0.004 +/- 0.01 in phase. The integral gamma-ray photon flux above 100 MeV is (56 +/- 3 +/- 11) x 10(-8) cm(-2) s(-1). The photon spectrum is well described by an exponentially cut-off power law of the form dF/dE = kE(-Gamma)e((-E/Ec)), where the energy E is expressed in GeV. The photon index is Gamma = 1.5 +/- 0.1 +/- 0.1 and the exponential cut-off is E-c = 2.4 +/- 0.3 +/- 0.5 GeV. The first uncertainty is statistical and the second is systematic. The integral photon flux of the bridge is approximately 10% of the pulsed emission, and the upper limit on off-pulse gamma-ray emission from a putative pulsar wind nebula is < 10% of the pulsed emission at the 95% confidence level. Radio polarization measurements yield a rotation measure of RM = 524 +/- 4 rad m(-2) but a poorly constrained magnetic geometry. Re-analysis of Chandra X-ray Observatory data enhanced the significance of the weak X-ray pulsations, and the first peak is roughly phase aligned with the first gamma-ray peak. We discuss the emission region and beaming geometry based on the shape and spectrum of the gamma-ray light curve combined with radio and X-ray measurements, and the implications for the pulsar distance. Gamma-ray emission from the polar cap region seems unlikely for this pulsar.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- Fysik
- Physics
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- Ackermann, M. (author)
- Ajello, M. (author)
- Atwood, W. B. (author)
- Baldini, L. (author)
- Ballet, J. (author)
- Barbiellini, G. (author)
- Bastieri, D. (author)
- Battelino, M. (author)
- Baughman, B. M. (author)
- Bechtol, K. (author)
- Bellazzini, R. (author)
- Berenji, B. (author)
- Bloom, E. D. (author)
- Bogaert, G. (author)
- Borgland, A. W. (author)
- Bregeon, J. (author)
- Brez, A. (author)
- Brigida, M. (author)
- Bruel, P. (author)
- Burnett, T. H. (author)
- Caliandro, G. A. (author)
- Cameron, R. A. (author)
- Camilo, F. (author)
- Caraveo, P. A. (author)
- Casandjian, J. M. (author)
- Cecchi, C. (author)
- Charles, E. (author)
- Chekhtman, A. (author)
- Chen, A. W. (author)
- Cheung, C. C. (author)
- Chiang, J. (author)
- Ciprini, S. (author)
- Cognard, I. (author)
- Cohen-Tanugi, J. (author)
- Cominsky, L. R. (author)
- Conrad, J. (author)
- Cutini, S. (author)
- Demorest, P. (author)
- Dermer, C. D. (author)
- de Angelis, A. (author)
- de Luca, A. (author)
- de Palma, F. (author)
- Digel, S. W. (author)
- Dormody, M. (author)
- Silva, E. D. E. (author)
- Drell, P. S. (author)
- Dubois, R. (author)
- Dumora, D. (author)
- Espinoza, C. (author)
- Farnier, C. (author)
- Favuzzi, C. (author)
- Focke, W. B. (author)
- Frailis, M. (author)
- Freire, P. C. C. (author)
- Fukazawa, Y. (author)
- Funk, S. (author)
- Fusco, P. (author)
- Gargano, F. (author)
- Gasparrini, D. (author)
- Gehrels, N. (author)
- Germani, S. (author)
- Giebels, B. (author)
- Giglietto, N. (author)
- Giordano, F. (author)
- Glanzman, T. (author)
- Godfrey, G. (author)
- Grenier, I. A. (author)
- Grondin, M. H. (author)
- Grove, J. E. (author)
- Guillemot, L. (author)
- Guiriec, S. (author)
- Hanabata, Y. (author)
- Harding, A. K. (author)
- Hayashida, M. (author)
- Hays, E. (author)
- Hughes, R. E. (author)
- Johannesson, G. (author)
- Johnson, A. S. (author)
- Johnson, R. P. (author)
- Johnson, T. J. (author)
- Johnson, W. N. (author)
- Johnston, S. (author)
- Kamae, T. (author)
- Katagiri, H. (author)
- Kataoka, J. (author)
- Kawai, N. (author)
- Kerr, M. (author)
- Kiziltan, B. (author)
- Knodlseder, J. (author)
- Komin, N. (author)
- Kramer, M. (author)
- Kuehn, F. (author)
- Kuss, M. (author)
- Lande, J. (author)
- Latronico, L. (author)
- Lee, S. H. (author)
- Lemoine-Goumard, M. (author)
- Longo, F. (author)
- Loparco, F. (author)
- Lott, B. (author)
- Lovellette, M. N. (author)
- Lubrano, P. (author)
- Lyne, A. G. (author)
- Makeev, A. (author)
- Manchester, R. N. (author)
- Marelli, M. (author)
- Mazziotta, M. N. (author)
- McConville, W. (author)
- McEnery, J. E. (author)
- McLaughlin, M. A. (author)
- Meurer, C. (author)
- Michelson, P. F. (author)
- Mitthumsiri, W. (author)
- Mizuno, T. (author)
- Moiseev, A. A. (author)
- Monte, C. (author)
- Monzani, M. E. (author)
- Morselli, A. (author)
- Moskalenko, I. V. (author)
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- Nolan, P. L. (author)
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- Nuss, E. (author)
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- Orlando, E. (author)
- Ormes, J. F. (author)
- Ozaki, M. (author)
- Paneque, D. (author)
- Panetta, J. H. (author)
- Parent, D. (author)
- Pepe, M. (author)
- Pesce-Rollins, M. (author)
- Piron, F. (author)
- Porter, T. A. (author)
- Raino, S. (author)
- Rando, R. (author)
- Ransom, S. M. (author)
- Razzano, M. (author)
- Reimer, A. (author)
- Reimer, O. (author)
- Reposeur, T. (author)
- Ritz, S. (author)
- Rochester, L. S. (author)
- Rodriguez, A. Y. (author)
- Romani, R. W. (author)
- Ryde, F. (author)
- Sadrozinski, H. F. W. (author)
- Sanchez, D. (author)
- Parkinson, P. M. S. (author)
- Sgro, C. (author)
- Sierpowska-Bartosik, A. (author)
- Siskind, E. J. (author)
- Smith, D. A. (author)
- Smith, P. D. (author)
- Spandre, G. (author)
- Spinelli, P. (author)
- Stappers, B. W. (author)
- Starck, J. L. (author)
- Strickman, M. S. (author)
- Suson, D. J. (author)
- Tajima, H. (author)
- Takahashi, H. (author)
- Takahashi, T. (author)
- Tanaka, T. (author)
- Thayer, J. B. (author)
- Thayer, J. G. (author)
- Theureau, G. (author)
- Thompson, D. J. (author)
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- Tibaldo, L. (author)
- Torres, D. F. (author)
- Tosti, G. (author)
- Tramacere, A. (author)
- Uchiyama, Y. (author)
- Usher, T. L. (author)
- Van Etten, A. (author)
- Vilchez, N. (author)
- Vitale, V. (author)
- Waite, A. P. (author)
- Wallace, E. (author)
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- Weltevrede, P. (author)
- Wood, K. S. (author)
- Ylinen, T.Högskolan i Kalmar,Naturvetenskapliga institutionen(Swepub:lnu)eylto (author)
- Ziegler, M. (author)
- Högskolan i KalmarNaturvetenskapliga institutionen (creator_code:org_t)
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- In:Astrophysical Journal700:2, s. 1059-10660004-637X1538-4357
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- Barbiellini, G.
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