| HAL : in2p3-00655793, version 1 |
| DOI : 10.1088/0004-637X/738/1/114 |
| Fiche détaillée | Récupérer au format |
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| The Astrophysical Journal 738 (2011) 114 |
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| SUB-LUMINOUS γ -RAY PULSARS |
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| R. W. RomaniM. KerrH. A. CraigS. JohnstonI. Cognard1, 2D. A. Smith3 |
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| (01/09/2011) |
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| Most pulsars observed by the Fermi Large Area Telescope have γ -ray luminosities scaling with spin-down power ˙E as Lγ ≈ ( ˙E × 1033 erg s−1)1/2. However, there exist one detection and several upper limits an order of magnitude or more fainter than this trend. We describe these "sub-luminous" γ -ray pulsars and discuss the case for this being an orientation effect. Of the 12 known young radio pulsars with ˙ E > 1034 erg s−1 and d 2 kpc several are substantially sub-luminous. The limited available geometrical constraints favor aligned geometries for these pulsars, although no one case for alignment is compelling. In this scenario GeV emission detected from such sub-luminous pulsars can be due to a lower altitude, lower-power accelerator gap. |
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| 1 : | LPCE - Laboratoire de physique et chimie de l'environnement |
| 2 : | USN - Unité Scientifique de la Station de Nançay |
| 3 : | CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan |
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| GLAST |
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| Thème(s) | : | Physique/Astrophysique/Astrophysique galactique Planète et Univers/Astrophysique/Astrophysique galactique |
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| gamma rays: stars - pulsars: general |
| in2p3-00655793, version 1 | |
| http://hal.in2p3.fr/in2p3-00655793 | |
| oai:hal.in2p3.fr:in2p3-00655793 | |
| Contributeur : Virginie Mas | |
| Déposé pour le compte de : | |
| Soumis le : Lundi 2 Janvier 2012, 14:48:29 | |
| Dernière modification le : Jeudi 5 Janvier 2012, 15:41:15 | |