DETECTION OF THE PULSAR WIND NEBULA HESS J1825-137 WITH THE FERMI LARGE AREA TELESCOPE
Grondin MH, Funk S, Lemoine-Goumard M, Van Etten A, Hinton JA, Camilo F, Cognard I, Espinoza CM, Freire PCC, Grove JE, Guillemot L, Johnston S, Kramer M, Lande J, Michelson P, Possenti A, Romani RW, Skilton JL, Theureau G, Weltevrede P (2011)
Publication Type: Journal article
Publication year: 2011
Journal
Book Volume: 738
Journal Issue: 1
DOI: 10.1088/0004-637X/738/1/42
Abstract
We announce the discovery of 1-100 GeV gamma-ray emission from the archetypal TeV pulsar wind nebula (PWN) HESS J1825-137 using 20 months of survey data from the Fermi-Large Area Telescope (LAT). The gamma-ray emission detected by the LAT is significantly spatially extended, with a best-fit rms extension of sigma = 0 degrees.56 +/- 0 degrees.07 for an assumed Gaussian model. The 1-100 GeV LAT spectrum of this source is well described by a power law with a spectral index of 1.38 +/- 0.12 +/- 0.16 and an integral flux above 1 GeV of (6.50 +/- 0.21 +/- 3.90) x 10(-9) cm(-2) s(-1). The first errors represent the statistical errors on the fit parameters, while the second ones are the systematic uncertainties. Detailed morphological and spectral analyses bring new constraints on the energetics and magnetic field of the PWN system. The spatial extent and hard spectrum of the GeV emission are consistent with the picture of an inverse Compton origin of the GeV-TeV emission in a cooling-limited nebula powered by the pulsar PSR J1826-1334.
Authors with CRIS profile
Involved external institutions
Université Bordeaux 1, Sciences et Technologies
France (FR)
Stanford University
United States (USA) (US)
University of Leicester
United Kingdom (GB)
Columbia University
United States (USA) (US)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
University of Manchester
United Kingdom (GB)
Max-Planck-Institut für Radioastronomie / Max Planck Institute for Radio Astronomy
Germany (DE)
U.S. Naval Research Laboratory
United States (USA) (US)
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Australia (AU)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
University of Leeds
United Kingdom (GB)
France (FR)
Stanford University
United States (USA) (US)
University of Leicester
United Kingdom (GB)
Columbia University
United States (USA) (US)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
University of Manchester
United Kingdom (GB)
Max-Planck-Institut für Radioastronomie / Max Planck Institute for Radio Astronomy
Germany (DE)
U.S. Naval Research Laboratory
United States (USA) (US)
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Australia (AU)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
University of Leeds
United Kingdom (GB)
How to cite
APA:
Grondin, M.-H., Funk, S., Lemoine-Goumard, M., Van Etten, A., Hinton, J.A., Camilo, F.,... Weltevrede, P. (2011). DETECTION OF THE PULSAR WIND NEBULA HESS J1825-137 WITH THE FERMI LARGE AREA TELESCOPE. Astrophysical Journal, 738(1). https://doi.org/10.1088/0004-637X/738/1/42
MLA:
Grondin, M. -H., et al. "DETECTION OF THE PULSAR WIND NEBULA HESS J1825-137 WITH THE FERMI LARGE AREA TELESCOPE." Astrophysical Journal 738.1 (2011).
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