{ "id": "1507.03136", "version": "v1", "published": "2015-07-11T18:36:19.000Z", "updated": "2015-07-11T18:36:19.000Z", "title": "On the Spectral Shape of Gamma-ray Pulsars Above the Break Energy", "authors": [ "Christopher Bochenek", "Andrew McCann" ], "comment": "34th International Cosmic Ray Conference", "categories": [ "astro-ph.HE" ], "abstract": "It is well known that, for bright gamma-ray pulsars with high statistics above a few GeV, the phase averaged spectral energy distribution (SED) is harder than a simple exponential cutoff above the break. We perform phase-resolved spectral analyses of bright gamma-ray pulsars and demonstrate that, even over narrow phase ranges, the SEDs of gamma-ray pulsars above the break energy are harder than a simple exponential cutoff. We argue within a radiation-reaction limited curvature framework that this is indicative of non-stationary emission or emission from multiple zones. Further, we address a common problem faced when fitting hard spectral tails with a power-law times a sub-exponential function. Namely, that the sub-exponent parameter does not describe any parameters of physical models of pulsar emission. We introduce a simple analytical fit function to solve this problem.", "revisions": [ { "version": "v1", "updated": "2015-07-11T18:36:19.000Z" } ], "analyses": { "keywords": [ "break energy", "spectral shape", "simple exponential cutoff", "bright gamma-ray pulsars", "phase averaged spectral energy distribution" ], "tags": [ "conference paper" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150703136B", "inspire": 1382548 } } }