Diffuse hard X-ray emission outside Vela X detected with Suzaku/XIS

Satoru Katsuda, Koji Mori, Robert Petre, Hiroya Yamaguchi, Hiroshi Tsunemi, Fabrizio Bocchino, Aya Bamba, Marco Miceli, John W. Hewitt, Tea Temim, Hiroyuki Uchida, Rie Yoshii

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Vela X is a large, 3°×2°, radio-emitting pulsar wind nebula (PWN) powered by the Vela pulsar in the Vela supernova remnant. Using Suzaku/XIS observations, we find hard X-ray emission extending outside the Vela X region. The spectral and spatial properties of the hard X-ray emission suggest that it is associated with the Vela PWN. The larger X-ray extension found in this work strongly suggests that distinct populations relativistic electrons form the X-ray PWN and Vela X. We also notice diffuse hard X-ray emission in the other direction. More Suzaku/XIS observations are strongly desired to reveal the entire morphology of the Vela PWN.

Original languageEnglish (US)
Title of host publicationSUZAKU 2011 - Exploring the X-Ray Universe
Subtitle of host publicationSuzaku and Beyond
Number of pages3
StatePublished - 2012
Externally publishedYes
EventSuzaku 2011: Exploring the X-Ray Universe: Suzaku and Beyond - Palo Alto, CA, United States
Duration: Jul 20 2011Jul 22 2011

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceSuzaku 2011: Exploring the X-Ray Universe: Suzaku and Beyond
Country/TerritoryUnited States
CityPalo Alto, CA

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


  • supernova remnants
  • X-rays: ISM


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