Suzaku Detection of Diffuse Hard X-Ray Emission outside Vela X

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

Risultato della ricerca: Articlepeer review

7 Citazioni (Scopus)

Abstract

Vela X is a large, 3ı 2ı, radio-emitting pulsar wind nebula (PWN) powered by the Vela pulsar in the Velasupernova remnant. Using four Suzaku/XIS observations pointed just outside Vela X, we have found hard X-rayemission extending throughout the fields of view. The hard X-ray spectra are well represented by a power-law.The photon index was measured to be constant at Γ 2.4, similar to that of the southern outer part of Vela X.The power-law flux decreases with increasing distance from the pulsar. These properties lead us to propose thatthe hard X-ray emission is associated with the Vela PWN. The larger X-ray extension found in this work stronglysuggests that distinct populations of relativistic electrons form the X-ray PWN and Vela X, as was recently inferredfrom multiwavelength spectral modeling of Vela X.
Lingua originaleEnglish
pagine (da-a)S827-S836
Numero di pagine10
RivistaPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume63
Stato di pubblicazionePublished - 2011

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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