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Extremely fast acceleration of cosmic rays in a supernova remnant

Author

Listed:
  • Yasunobu Uchiyama

    (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan)

  • Felix A. Aharonian

    (Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin 2, Ireland
    Max-Planck-Institut für Kernphysik, PO Box 103980, D69029 Heidelberg, Germany)

  • Takaaki Tanaka

    (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan
    Stanford Linear Accelerator Center, 2575 Sand Hill Road, M/S 29, Menlo Park, California 94025, USA)

  • Tadayuki Takahashi

    (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan)

  • Yoshitomo Maeda

    (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan)

Abstract

Quick-fire cosmic rays New data from the orbiting Chandra X-ray observatory reveal that the X-ray hot spots in the shell of supernova remnant SNR RX J1713.7-3946 undergo brightening and decay on a one-year timescale. This supernova remnant is unusual in that its X-ray emissions are largely non-thermal in origin. The rapid variability points to ultrarelativistic electrons acting via a synchrotron process as the probable X-ray source. All this adds up to unexpectedly rapid cosmic-ray acceleration in a magnetic field amplified by a factor of more than 100.

Suggested Citation

  • Yasunobu Uchiyama & Felix A. Aharonian & Takaaki Tanaka & Tadayuki Takahashi & Yoshitomo Maeda, 2007. "Extremely fast acceleration of cosmic rays in a supernova remnant," Nature, Nature, vol. 449(7162), pages 576-578, October.
    • Handle: RePEc:nat:nature:v:449:y:2007:i:7162:d:10.1038_nature06210
    DOI: 10.1038/nature06210
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