期刊
ASTROPHYSICAL JOURNAL
卷 871, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-4357/aaf6b8
关键词
ISM: supernova remnants; pulsars: general; pulsars: individual (Crab, Vela); supernovae: general
资金
- Royal Society-Science Foundation Ireland University Research Fellowship
- UK Science and Technologies Facilities Council
- Space Telescope Science Institute under U.S. Government [NAG W-2166]
We use Gaia Data Release 2 to search for possible surviving binary companions to three of the best-studied historical Milky Way core-collapse supernovae. Consistent with previous work, we find there to be no plausible binary companion to either the Crab or Cas A supernovae. For the first time, we present a systematic search for a former companion to the Vela supernova, and rule out essentially any surviving luminous (>L-circle dot) companion. Based on parallax and proper motion, we identify a faint source (Star A; Gaia Source ID 5521955992667891584) that is kinematically consistent with being a former binary companion to the Vela SN progenitor. However, the inferred absolute magnitude of this source is extremely faint, raising the possibility that it may in fact be a background interloper. In addition, we derive a new distance (3.37(-0.97)(+4.04) kpc) to the Crab SN based on the Gaia parallax measurements, which is significantly further than the 2 kpc distance typically adopted. Finally, we demonstrate that Gaia can be used to measure the secular decline in the luminosity of the Crab pulsar, and provide a new test of pulsar models.
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