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INVESTIGATING THE TeV MORPHOLOGY OF MGRO J1908+06 WITH VERITAS

Name: INVESTIGATING THE TeV MORPHOLOGY OF MGRO J1908+06 WITH VERITAS
Keywords: High Energy Astrophysical Phenomena (astro-ph.HE), gamma-ray burst: individual (mgro j1908+06, ver j1907+062), Institut für Physik und Astronomie, g40.5-0.5, FOS: Physical sciences, gamma rays: general, array, gamma-ray burst: individual (mgro j1908+06, gamma-ray emission, galactic plane

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type , Journal 15 May 2014Embargo end date: 01 Jan 2014 Ireland, Ireland, Germany Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 787, page 166 (issn: 0004-637X, eissn: 1538-4357,

Authors: E. Aliu; S. Archambault; T. Aune; B. Behera; M. Beilicke; W. Benbow; K. Berger; +81 Authors

doi: 10.1088/0004-637x/787/2/166 , 10.48550/arxiv.1404.7185 , 10.13025/26476

arXiv: http://arxiv.org/abs/1404.7185 , 1404.7185

handle: 10379/10208

INVESTIGATING THE TeV MORPHOLOGY OF MGRO J1908+06 WITH VERITAS

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Abstract

We report on deep observations of the extended TeV gamma-ray source MGRO J1908+06 made with the VERITAS very high energy (VHE) gamma-ray observatory. Previously, the TeV emission has been attributed to the pulsar wind nebula (PWN) of the Fermi-LAT pulsar PSR J1907+0602. We detect MGRO J1908+06 at a significance level of 14 standard deviations (14 sigma) and measure a photon index of 2.20 +/- 0.10_stat +/- 0.20_sys. The TeV emission is extended, covering the region near PSR J1907+0602 and also extending towards SNR G40.5--0.5. When fitted with a 2-dimensional Gaussian, the intrinsic extension has a standard deviation of sigma_src = 0.44 +/- 0.02 degrees. In contrast to other TeV PWNe of similar age in which the TeV spectrum softens with distance from the pulsar, the TeV spectrum measured near the pulsar location is consistent with that measured at a position near the rim of G40.5--0.5, 0.33 degrees away.

To appear in ApJ, 8 pages

Countries

Ireland, Ireland, Germany

Related Organizations

University of Iowa
United States
Georgia Institute of Technology
United States
Deutsches Elektronen-Synchrotron DESY
Germany
California Polytechnic State University
United States
King’s University
United States

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Keywords

High Energy Astrophysical Phenomena (astro-ph.HE), gamma-ray burst: individual (mgro j1908+06, ver j1907+062), Institut für Physik und Astronomie, g40.5-0.5, FOS: Physical sciences, gamma rays: general, array, gamma-ray burst: individual (mgro j1908+06, gamma-ray emission, galactic plane, 520, remnant, milagro, pulsars: individual (psr j1907+0602), psr j1907+0602, ism: supernova remnants, ver j1907+062), pulsar wind nebula, Astrophysics - High Energy Astrophysical Phenomena, ddc: ddc:520

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