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FERMI LARGE AREA TELESCOPE OBSERVATIONS OF GAMMA-RAY PULSARS PSR J1057-5226, J1709-4429, AND J1952+3252
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2010 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 720, no 1, 26-40 p.Article in journal (Refereed) Published
Abstract [en]

The Fermi Large Area Telescope (LAT) data have confirmed the pulsed emission from all six high-confidence gamma-ray pulsars previously known from the EGRET observations. We report results obtained from the analysis of 13 months of LAT data for three of these pulsars (PSR J1057-5226, PSR J1709-4429, and PSR 11952+3252) each of which had some unique feature among the EGRET pulsars. The excellent sensitivity of LAT allows more detailed analysis of the evolution of the pulse profile with energy and also of the variation of the spectral shape with phase. We measure the cutoff energy of the pulsed emission from these pulsars for the first time and provide a more complete picture of the emission mechanism. The results confirm some, but not all, of the features seen in the EGRET data.

Place, publisher, year, edition, pages
2010. Vol. 720, no 1, 26-40 p.
Keyword [en]
gamma rays: stars, pulsars: individual (PSR J1057-5226, PSR J1709-4429, and PSR J1952+3252)
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Natural Sciences
Identifiers
URN: urn:nbn:se:su:diva-48936DOI: 10.1088/0004-637X/720/1/26ISI: 000281596000004OAI: oai:DiVA.org:su-48936DiVA: diva2:376230
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authorCount :154Available from: 2010-12-10 Created: 2010-12-10 Last updated: 2017-12-11Bibliographically approved

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Ripken, JoachimYang, Zhaoyu
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