Discovery of a new X-ray filled radio supernova remnant around the pulsar wind nebula in 3EG J1809-2328

Mallory S.E. Roberts, C. L. Brogan

Research output: Contribution to journalArticle


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 languageEnglish (US)
Pages (from-to)320-324
Number of pages5
JournalAstrophysical Journal
Issue number1
StatePublished - Jul 1 2008



  • 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

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