The Superluminal Source GRS 1915+105: A High Mass X-ray Binary?

Details The Superluminal Source GRS 1915+105: A High Mass X-ray Binary? The Superluminal Source GRS 1915+105: A High Mass X-ray Binary?

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996oxun.rept.....m&link_type=abstract

Technical Report, Oxford Univ. Oxford, United Kingdom Dept. of Physics

Physics

X Ray Binaries, Infrared Spectra, Emission Spectra, X Ray Sources, Stellar Mass, Doppler Effect, Line Spectra

Scientific paper

We obtained K-band (2.0-2.5 micron) infrared spectra of the visually obscured superluminal source GRS 1915+105 on three different epochs of the year 1995, at times when it was detected as a hard X-ray source. The three spectra exhibit HI Br(gamma) (2.167 micron) and HeI (2.058 micron) emission lines. The spectral morphology, absolute magnitude, and time-variability of the infrared counterpart are consistent with the class of high mass X-ray binaries that contain late Oe and early Be as mass donor stars. In GRS 1915+105 we have not detected Doppler-shifted emission lines, as observed in the classic stellar source of relativistic jets SS 433. We discuss why in GRS 1915+105 it may be more difficult than in SS 433 to detect emission lines from the jets.

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