The discovery of the γ-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° 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 × 1034 erg s–1, and a large off-peak (OP) emission component, making it quite unusual among the known γ-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 OP emission indicate it is likely magnetospheric. Analysis of recent XMM-Newton 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.
Autori interni: | |
Autori: | Abdo AA; Ackermann M; Ajello M; Atwood B; Baldini L; Ballet J; Barbiellini G; Baring MG; Bastieri D; Bechtol K; Belfiore A; Bellazzini R; Berenji B; Blandford RD; Bloom ED; Bonamente E; Borgland AW; Bregeon J; Brez A; Brigida M; Bruel P; Burnett TH; Buson S; Caliandro GA; Cameron RA; Camilo F; Caraveo PA; Carrigan S; Casandjian JM; Cecchi C; Celik O; Charles E; Chekhtman A; Cheung CC; Chiang J; Ciprini S; Claus R; Cohen-Tanugi J; Conrad J; de Angelis A; de Luca A; de Palma F; Digel SW; Dormody M; Silva EDE; Drell PS; Dubois R; Dumora D; Edmonds Y; Farnier C; Favuzzi C; Fegan SJ; Focke WB; Fortin P; Frailis M; Fukazawa Y; Funk S; Fusco P; Gargano F; Gasparrini D; Gehrels N; Germani S; Giavitto G; Giglietto N; Giordano F; Glanzman T; Godfrey G; Grenier IA; Grondin MH; Grove JE; Guillemot L; Guiriec S; Gwon C; Hadasch D; Harding AK; Hays E; Horan D; Hughes RE; Jackson MS; Johannesson G; Johnson AS; Johnson RP; Johnson TJ; Johnson WN; Kamae T; Kanai Y; Katagiri H; Kataoka J; Kawai N; Kerr M; Knodlseder J; Kuss M; Lande J; Latronico L; Lemoine-Goumard M; Longo F; Loparco F; Lott B; Lovellette MN; Lubrano P; Madejski GM; Makeev A; Marelli M; Mazziotta MN; McEnery JE; Meurer C; Michelson PF; Mitthumsiri W; Mizuno T; Moiseev AA; Monte C; Monzani ME; Morselli A; Moskalenko IV; Murgia S; Nolan PL; Norris JP; Nuss E; Ohsugi T; Omodei N; Orlando E; Ormes JF; Paneque D; Panetta JH; Parent D; Pelassa V; Pepe M; Pesce-Rollins M; Pierbattista M; Piron F; Porter TA; Raino S; Rando R; Ransom SM; Ray PS; Razzano M; Rea N; Reimer A; Reimer O; Reposeur T; Rochester LS; Rodriguez AY; Romani RW; Roth M; Ryde F; Sadrozinski HFW; Sander A; Parkinson PMS; Scargle JD; Sgro C; Siskind EJ; Smith DA; Smith PD; Spandre G; Spinelli P; Strickman MS; Suson DJ; Takahashi H; Tanaka T; Thayer JB; Thayer JG; Thompson DJ; Thorsett SE; Tibaldo L; Tibolla O; Torres DF; Tosti G; Tramacere A; Usher TL; Van Etten A; Vasileiou V; Venter C; Vilchez N; Vitale V; Waite AP; Wang P; Watters K; Winer BL; Wolff MT; Wood KS; Ylinen T; Ziegler M |
Titolo: | FERMI LARGE AREA TELESCOPE OBSERVATIONS OF PSR J1836+5925 |
Anno del prodotto: | 2010 |
Digital Object Identifier (DOI): | 10.1088/0004-637X/712/2/1209 |
Appare nelle tipologie: | 1.1 Articolo in rivista |