Investigating the TeV morphology of MGRO J1908+06 with veritas

E Aliu; M Errando; S Archambault; T Aune; B Behera; X Chen; M Beilicke; J. H Buckley; V Bugaev; W Benbow; M Cerruti; K Berger; R Bird; E Collins-Hughes; J. V Cardenzana; L Ciupik; M. P Connolly; W Cui; J Dumm; VERITAS Collaboration; V. V Dwarkadas

doi:10.1088/0004-637X/787/2/166

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Investigating the TeV morphology of MGRO J1908+06 with veritas

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Investigating the TeV morphology of MGRO J1908+06 with veritas

E Aliu, M Errando, S Archambault, T Aune, B Behera, X Chen, M Beilicke, J. H Buckley, V Bugaev, W Benbow, …

The Astrophysical journal, Vol.787(2), 166

06/01/2014

DOI: 10.1088/0004-637X/787/2/166

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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 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 (14σ) and measure a photon index of 2.20 ± 0.10{sub stat} ± 0.20{sub sys}. The TeV emission is extended, covering the region near PSR J1907+0602 and also extending toward SNR G40.5-0.5. When fitted with a two-dimensional Gaussian, the intrinsic extension has a standard deviation of σ{sub src} = 0.°44 ± 0.°02. 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 away.

ASTROPHYSICS, COSMOLOGY AND ASTRONOMY

COSMIC GAMMA BURSTS

COVERINGS

EMISSION

GAMMA RADIATION

GAMMA SOURCES

NEBULAE

PULSARS

RESONANCE IONIZATION MASS SPECTROSCOPY

SPECTRA

SUPERNOVA REMNANTS

TEV RANGE

TWO-DIMENSIONAL CALCULATIONS

Details

Title: Subtitle: Investigating the TeV morphology of MGRO J1908+06 with veritas
Creators: E Aliu - Columbia University
M Errando - Columbia University
S Archambault - McGill University
T Aune - University of California, Los Angeles
B Behera - Deutsches Elektronen-Synchrotron DESY
X Chen - University of Potsdam
M Beilicke - Washington University in St. Louis
J. H Buckley - Washington University in St. Louis
V Bugaev - Washington University in St. Louis
W Benbow - Harvard University
M Cerruti - Harvard University
K Berger - University of Delaware
R Bird - University College Dublin
E Collins-Hughes - University College Dublin
J. V Cardenzana - Iowa State University
L Ciupik - Adler Planetarium
M. P Connolly - Ollscoil na Gaillimhe – University of Galway
W Cui - Purdue University West Lafayette
J Dumm - University of Minnesota
VERITAS Collaboration
V. V Dwarkadas - University of Chicago
Contributors: P Kaaret (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.787(2), 166
DOI: 10.1088/0004-637X/787/2/166
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: Institute of Physics (IOP)
Language: English
Date published: 06/01/2014
Academic Unit: Physics and Astronomy
Record Identifier: 9984199927902771

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