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Ajello, M; Atwood, W. B; Baldini, L; Ballet, J; Bechtol, K; Blandford, R. D; Bonamente, E; Bregeon, J; Brez, A; Caliandro, G. A; Cameron, R. A; Caraveo, P. A; Carrigan, S; Charles, E; Chekhtman, A; Cheung, C. C; Ciprini, S; Claus, R; Conrad, J; de Angelis, A; de Palma, F; Dubois, R; Dumora, D; Favuzzi, C; Fegan, S. J; Focke, W. B; Fortin, P; Fukazawa, Y; Funk, S; Fusco, P; Gehrels, N; Germani, S; Giavitto, G; Giglietto, N; Giordano, F; Grondin, M.-H; Grove, J. E; Hadasch, D; Hays, E; Horan, D; Jackson, M. S; Jóhannesson, G; Johnson, A. S; Johnson, R. P; Johnson, W. N; Kawai, N; Kerr, M; Knödlseder, J; Kuss, M; Lande, J; Latronico, L; Lemoine-Goumard, M; Lott, B; Lubrano, P; Mazziotta, M. N; McEnery, J. E; Mitthumsiri, W; Mizuno, T; Moiseev, A. A; Monte, C; Monzani, M. E; Morselli, A; Murgia, S; Norris, J. P; Nuss, E; Ohsugi, T; Panetta, J. H; Pepe, M; Piron, F; Porter, T. A; Rainò, S; Rando, R; Ransom, S. M; Ray, P. S; Reimer, O; Reposeur, T; Romani, R. W; Roth, M; Ryde, F; Sander, A; Saz Parkinson, P. M; Scargle, J. D; Sgrò, C; Smith, D. A; Smith, P. D; Spandre, G; Spinelli, P; Suson, D. J; Takahashi, H; Thayer, J. G; Thorsett, S. E; Tibolla, O; Torres, D. F; Tramacere, A; Usher, T. L; Venter, C; Vilchez, N; Winer, B. L; Wolff, M. T; Ziegler, M
The Astrophysical journal, 04/2010, Letnik: 712, Številka: 2Journal Article
The discovery of the gamma-ray pulsar PSR J1836+5925, powering the formerly unidentified EGRET source 3EG J1835+5918, was one of the early accomplishments of the Fermi Large Area Telescope (LAT). Sitting 25 degrees off the Galactic plane, PSR J1836+5925 is a 173 ms pulsar with a characteristic age of 1.8 million years, a spindown luminosity of 1.1$\times10^{34}$ erg s$^{-1}$, and a large off-peak emission component, making it quite unusual among the known gamma-ray pulsar population. We present an analysis of one year of LAT data, including an updated timing solution, detailed spectral results and a long-term light curve showing no indication of variability. No evidence for a surrounding pulsar wind nebula is seen and the spectral characteristics of the off-peak emission indicate it is likely magnetospheric. Analysis of recent XMM observations of the X-ray counterpart yields a detailed characterization of its spectrum, which, like Geminga, is consistent with that of a neutron star showing evidence for both magnetospheric and thermal emission.
