Abstract
We report the discovery of a partial ∼2° diameter nonthermal radio shell coincident with Taz, the pulsar wind nebula (PWN) in the error box of the apparently variable γ-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.
Original language | English (US) |
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Pages (from-to) | 320-324 |
Number of pages | 5 |
Journal | Astrophysical Journal |
Volume | 681 |
Issue number | 1 |
DOIs | |
State | Published - Jul 1 2008 |
Keywords
- Gamma rays: observations
- ISM: individual (G7.5-1.7)
- Pulsars: individual (Taz)
- Radio continuum: ISM
- Supernova remnants
- X-rays: ISM
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science