A systematic search for variability of X-ray sources. II - The low galactic latitude sample

Details A systematic search for variability of X-ray sources. II - The low galactic latitude sample A systematic search for variability of X-ray sources. II - The low galactic latitude sample

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1616m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Dec. 1987, p. 1616-1628.

Astronomy and Astrophysics

Astronomy

7

Astronomical Coordinates, Flare Stars, Milky Way Galaxy, Stellar Spectrophotometry, Variable Stars, X Ray Sources, Astronomical Catalogs, Latitude, M Stars, Proportional Counters, Radiant Flux Density

Scientific paper

A search for variability on timescales from 1 day to years has been carried out for 120 X-ray sources observed with the Einstein Observatory Imaging Proportional Counter. All the sources are at low galactic latitude and most of them have soft X-ray fluxes in the range 10-13 - 10-12erg cm-2s-1. Significant flux variations have been detected in 17 sources. A strong flare, with a flux increase of a factor ≡100 in ≡400 s, has been discovered in an optically unidentified source. This is probably a dwarf M flare star or an RS CVn system.

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