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A new age and distance indicator of SNRs with nonthermal X-ray filaments

  • Aya Bamba (a1), Ryo Yamazaki (a2) and Junko S. Hiraga (a3)

Abstract

It is discovered that young SNRs have very thin filaments emitting nonthermal X-rays from accelerated electrons. In this paper, a new age and distance indicator is proposed using the spectral and spatial features of nonthermal filaments. We applied this method to the Vela Jr. SNR, for which age and distance are still unknown, and estimated that this SNR is one of the nearest and youngest SNR in our Galaxy: the estimated distance and age are 0.33 (0.26–0.50) kpc and 660 (420–1400) years, respectively.

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Keywords

A new age and distance indicator of SNRs with nonthermal X-ray filaments

  • Aya Bamba (a1), Ryo Yamazaki (a2) and Junko S. Hiraga (a3)

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