Evidence of a Hadronic Origin for the TeV Source J1834-087

Abstract

We report on the discovery of compact, narrow OH line emission from the hydroxl molecule at 1720 MHz toward the extended TeV source J1834-087. The origin of this high energy emission is unknown; it could be powered by one or more candidate neutron stars (leptonic) or by cosmic rays interacting with dense gas (hadronic). The OH emission is detected near the center of J1834-087, coincident with the radio continuum of the supernova remnant W41, and the radial velocity of the line is the same velocity as a giant molecular cloud along the line of sight. We argue that the OH is maser emission stimulated by the interaction of the W41 shock with the molecular cloud. The known correlation between gamma-ray bright supernova remnants and OH masers favors a hadronic interpretation for this high energy emission.

4 pages, 1 figure. ApJ Letters, submitted

References in corpus (8)

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• The 1st Fermi Lat Supernova Remnant Catalog
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• Learning About the Magnetar Swift J1834.9-0846 from its Wind Nebula
• Gamma-ray upper limits on magnetars with 6 years of Fermi-LAT observations
• Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations
• The Dense Filamentary Giant Molecular Cloud G23.0-0.4: Birthplace of Ongoing Massive Star Formation
• Interaction Between Supernova Remnant G22.7-0.2 And The Ambient Molecular Clouds
• A rotationally-powered magnetar nebula around Swift J1834.9-0846
• The Age Evolution of the Radio Morphology of Supernova Remnants
• The Interaction Between the Supernova Remnant W41 and the Filamentary Infrared Dark Cloud G23.33-0.30
• Multiwavelength study of non-thermal emission in the Swift J1834.9-0846/W41 region