Discovery of 715 Second Pulsations from the Faint X-Ray Source AX J170006-4157

Details Discovery of 715 Second Pulsations from the Faint X-Ray Source AX J170006-4157 Discovery of 715 Second Pulsations from the Faint X-Ray Source AX J170006-4157

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...523l..65t&link_type=abstract

The Astrophysical Journal, Volume 523, Issue 1, pp. L65-L68.

Astronomy and Astrophysics

Astronomy

16

Stars: Pulsars: General, Pulsars: Individual (Ax J170006-4157), X-Rays: General

Scientific paper

We report here the discovery of a new X-ray pulsator, AX J170006-4157, in the Galactic plane. The source was observed three times between 1994 and 1997 by the Advanced Satellite for Cosmology and Astrophysics. Significant pulsations with P=714.5+/-0.3 s were discovered from the third observation made between MJD 50,707.8926 and MJD 50,710.2199. The X-ray spectrum is described by a flat power-law function with a photon index of ~=0.7. Although the spectrum could also be fitted by thermal models, the temperature obtained was unphysically high. The hard spectrum suggests that the source is a neutron star binary pulsar similar to X Persei (4U 0352+309), but we cannot completely exclude the possibility that it is a white dwarf binary.

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