The discovery of 321 S pulsations in the ROSAT HRI light curves of 1BMW J080622.8+152732 = RX J0806.3+1527

Details The discovery of 321 S pulsations in the ROSAT HRI light curves of 1BMW J080622.8+152732 = RX J0806.3+1527 The discovery of 321 S pulsations in the ROSAT HRI light curves of 1BMW J080622.8+152732 = RX J0806.3+1527

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...349l...1i&link_type=abstract

Astronomy and Astrophysics, v.349, p.L1-L4 (1999)

Astronomy and Astrophysics

Astrophysics

37

Stars: Individual: Rx J0806.3+1527, Stars: Novae, Cataclysmic Variables, Stars: Pulsars: General, Stars: Rotation, X-Rays: Stars

Scientific paper

During a systematic search for periodic signals in a sample of ~ 3000 ROSAT HRI (0.1-2.4 keV) light curves, we discovered ~ 321 s pulsations in the X-ray flux of RX J0806.3+1527. Two different HRI observations of RX J0806.3+1527 were obtained with the source at flux level of 3 and 5 x 10(-12) erg cm(-2) s(-1) , respectively. Only a faint B = 20.5 object is possibly present within the error circle, while no optical counterpart is present in the R plate down to a limiting magnitude of ~ 20. This indicates that the object is intrinsically blue. The X-ray and optical findings imply that RX J0806.3+1527 is a relatively distant ( ~ 500 pc) intermediate polar (IP) or, more unlikely, a nearby ( ~ 10 pc) isolated neutron star accreting from the interstellar medium.

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