Observations of the unidentified gamma-ray source TeV J2032+4130 by Veritas

E Aliu; M Errando; T Aune; B Behera; X Chen; S Federici; M Beilicke; J. H Buckley; V Bugaev; W Benbow; M Cerruti; K Berger; R Bird; J. V Cardenzana; L Ciupik; M. P Connolly; W Cui; C Duke; J Dumm; A Falcone; VERITAS Collaboration

doi:10.1088/0004-637X/783/1/16

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Observations of the unidentified gamma-ray source TeV J2032+4130 by Veritas

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Observations of the unidentified gamma-ray source TeV J2032+4130 by Veritas

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

The Astrophysical journal, Vol.783(1), 16

03/01/2014

DOI: 10.1088/0004-637X/783/1/16

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Abstract

TeV J2032+4130 was the first unidentified source discovered at very high energies (VHEs; E > 100 GeV), with no obvious counterpart in any other wavelength. It is also the first extended source to be observed in VHE gamma rays. Following its discovery, intensive observational campaigns have been carried out in all wavelengths in order to understand the nature of the object, which have met with limited success. We report here on a deep observation of TeV J2032+4130 based on 48.2 hr of data taken from 2009 to 2012 by the Very Energetic Radiation Imaging Telescope Array System experiment. The source is detected at 8.7 standard deviations (σ) and is found to be extended and asymmetric with a width of 9.'5 ± 1.'2 along the major axis and 4.'0 ± 0.'5 along the minor axis. The spectrum is well described by a differential power law with an index of 2.10 ± 0.14{sub stat} ± 0.21{sub sys} and a normalization of (9.5 ± 1.6{sub stat} ± 2.2{sub sys}) × 10{sup –13} TeV{sup –1} cm{sup –2} s{sup –1} at 1 TeV. We interpret these results in the context of multiwavelength scenarios which particularly favor the pulsar wind nebula interpretation.

Telescopes

ASTROPHYSICS, COSMOLOGY AND ASTRONOMY

ASYMMETRY

GAMMA RADIATION

GAMMA SOURCES

GEV RANGE

NEBULAE

PULSARS

SPECTRA

TEV RANGE

WAVELENGTHS

Details

Title: Subtitle: Observations of the unidentified gamma-ray source TeV J2032+4130 by Veritas
Creators: E Aliu - Columbia University
M Errando - Columbia University
T Aune - University of California, Los Angeles
B Behera - Deutsches Elektronen-Synchrotron DESY
X Chen - University of Potsdam
S Federici - 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
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
C Duke - Grinnell College
J Dumm - University of Minnesota
A Falcone - Pennsylvania State University
VERITAS Collaboration
Contributors: P Kaaret (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.783(1), 16
DOI: 10.1088/0004-637X/783/1/16
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: Institute of Physics (IOP)
Language: English
Date published: 03/01/2014
Academic Unit: Physics and Astronomy
Record Identifier: 9984200023702771

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