Soft X-ray emission from the vicinity of MV LYR

Details Soft X-ray emission from the vicinity of MV LYR Soft X-ray emission from the vicinity of MV LYR

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.280..568m&link_type=abstract

Nature, vol. 280, Aug. 16, 1979, p. 568, 569. Research supported by the University of California and NASA.

Astronomy and Astrophysics

Astronomy

11

Novae, Variable Stars, X Ray Sources, Balmer Series, Graphs (Charts), X Ray Astronomy

Scientific paper

Evidence for a soft X-ray source at the location of the nova-like variable star MV Lyr is presented. Data from the smallest field of view of the A2 experiment on board HEAO-1 in the range 0.18 to 2.5 keV reveals a source of 0.18 to 0.43 keV emission, designated H1901+43, with a count rate corresponding to a flux of 4 x 10 to the -12th erg/sq cm per sec if a spectral temperature of 3 x 10 to the 5th K is assumed. The two-dimensional error box of H1901+43 is observed to contain the UX UMa star MV Lyr, which is suggested as the only obvious candidate for the source of X-ray emission, in accordance with the observations of soft X-ray emission from other cataclysmic variables, notably AM Her, U Gem and SS Cyg.

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