Deeper Chandra Follow-up of Cygnus TeV Source Perpetuates Mystery

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dc.creatorButt, Yousaf
dc.creatorDrake, Jeremy
dc.creatorBenaglia, Paula
dc.creatorCombi, Jorge
dc.creatorDame, Thomas
dc.creatorMiniati, Francesco
dc.creatorRomero, Gustavo
dc.date2005-09-07
dc.date2005-11-03
dc.date.accessioned2026-07-07T10:27:38Z
dc.date.available2026-07-07T10:27:38Z
dc.descriptionA 50 ksec Chandra observation of the unidentified TeV source in Cygnus reported by the HEGRA collaboration reveals no obvious diffuse X-ray counterpart. However, 240 Pointlike X-ray sources are detected within or nearby the extended TeV J2032+4130 source region, of which at least 36 are massive stars and 2 may be radio emitters. That the HEGRA source is a composite, having as counterpart the multiple point-like X-ray sources we observe, cannot be ruled out. Indeed, the distribution of point-like X-ray sources appears non-uniform and concentrated broadly within the extent of the TeV source region. We offer a hypothesis for the origin of the very high energy gamma-ray emission in Cyg OB2 based on the local acceleration of TeV range cosmic rays and the differential distribution of OB vs. less massive stars in this association.
dc.descriptionSubstantially revised version; incorporates referee suggestions & expanded discussion
dc.identifierhttps://arxiv.org/abs/astro-ph/0509191
dc.identifierhttp://arxiv.org/abs/astro-ph/0509191
dc.identifierAstrophys.J.643:238-244,2006
dc.identifierdoi:10.1086/502642
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177207
dc.subjectAstrophysics
dc.titleDeeper Chandra Follow-up of Cygnus TeV Source Perpetuates Mystery
dc.typetext

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