Discovery of a New X-ray Filled Radio Supernova Remnant Around the Pulsar Wind Nebula in 3EG J1809-2328

Abstract

We report the discovery of a partial ~2deg. diameter non-thermal radio shell coincident with Taz, the pulsar wind nebula (PWN) in the error box of the apparently variable gamma-ray source 3EG J1809-2328. We propose that this radio shell is a newly identified supernova remnant (SNR G7.5-1.7) associated with the PWN. The SNR surrounds an amorphous region of thermal X-rays detected in archival ROSAT and ASCA observations putting this system in the mixed-morphology class of supernova remnants. G7.5-1.7 is the fifth such supernova remnant coincident with a bright GeV source, and the fourth containing a pulsar wind nebulae.

7 pages, 3 figures, to appear in The Astrophysical Journal

References in corpus (5)

• First detection of a VHE gamma-ray spectral maximum from a Cosmic source: H.E.S.S. discovery of the Vela X nebula
• Discovery of 35 New Supernova Remnants in the Inner Galaxy
• Discovery of the Putative Pulsar and Wind Nebula Associated with the TeV Gamma-ray Source HESS J1813-178
• The GeV-TeV Connection in Galactic gamma-ray sources
• Simulations of Mixed Morphology Supernova Remnants With Anisotropic Thermal Conduction

Cited by in corpus (5)

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• Searching for the optical counterparts of two young gamma-ray pulsars
• The environment of TeV halo progenitors