High-speed ejecta from the gamma-ray binary PSR B1259–63/LS 2883

George G. Pavlov, Jeremy Hare, Oleg Kargaltsev

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Observing the famous high-mass, eccentric X-ray and γ-ray binary PSR B1259–63/LS 2883 with Chandra, we detected X-ray emitting clumps moving from the binary with speeds of ∼0.1c, possibly with acceleration. The clumps are being ejected at least once per binary period, 3.4 years, presumably around binary periastrons. The power-law spectra of the clumps can be interpreted as synchrotron emission of relativistic electrons. Here we report the results of 8 observations of the clumps in 2011–2017 (two binary cycles) and discuss possible interpretations of this unique phenomenon.

Original languageEnglish (US)
Pages (from-to)125-129
Number of pages5
JournalRendiconti Lincei
StatePublished - Dec 1 2019

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)
  • Earth and Planetary Sciences(all)


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