HESS J1632-478: an energetic relic

Article Article scientifique Article HESS J1632-478: an energetic relic eng 2010 author Balbo Matteo 709926 author Saouter Pierre 583629 author Walter Roland 23812 author Pavan Lucia 708064 author Tramacere Andréa 711188 author Pohl Martin 96464 author Zurita-Heras J.-A. A111 10.1051/0004-6361/201014764 0004-6361 http://www.aanda.org/10.1051/0004-6361/201014764 Aims. HESS J1632-478 is an extended and still unidentified TeV source in the galactic plane. Methods. In order to identify the source of the very high energy emission and to constrain its spectral energy distribution, we used a deep observation of the field obtained with XMM-Newton together with data from Molonglo, Spitzer and Fermi to detect counterparts at other wavelengths. Results. The flux density emitted by HESS J1632-478 peaks at very high energies and is more than 20 times weaker at all other wavelengths probed. The source spectrum features two large prominent bumps with the synchrotron emission peaking in the ultraviolet and the external inverse Compton emission peaking in the TeV. HESS J1632-478 is an energetic pulsar wind nebula with an age of the order of 104 years. Its bolometric (mostly GeV-TeV) luminosity reaches 10% of the current pulsar spin down power. The synchrotron nebula has a size of 1 pc and contains an unresolved point-like X-ray source, probably the pulsar with its wind termination shock. Acceleration of particles Stars: neutron Gamma rays: stars X-rays: stars Pulsar: general Dewey 500.2 34 Département de physique nucléaire et corpusculaire 132 false Astronomy & astrophysics 520 b13184db-a140-453e-88ef-e655ad9d98c3 Article (Published version) Public Pohl27.pdf 1251572 application/pdf openAccess Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Title	Published in	Access level	OA Policy	Year	Views	Downloads

HESS J1632-478: an energetic relic	Astronomy & astrophysics			2010	615	246

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Tramacere, Andréa