A study of the X-ray pulsars X1845-024 and XTE J1858+034 based on INTEGRAL observations

Details A study of the X-ray pulsars X1845-024 and XTE J1858+034 based on INTEGRAL observations A study of the X-ray pulsars X1845-024 and XTE J1858+034 based on INTEGRAL observations

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008arep...52..138d&link_type=abstract

Astronomy Reports, Volume 52, Issue 2, pp.138-151

Astronomy and Astrophysics

Astronomy

97.60.Gb, 95.85.Nv, Pulsars, X-Ray

Scientific paper

We present an analysis of observations of the relatively unstudied X-ray pulsars X1845-024 and XTE J1858+034 carried out from May 2003 through November 2004 using the JEM-X and IBIS telescopes of the INTEGRAL international gamma-ray observatory at energies of 5-70 keV. The X-ray spectra and light curves of the pulsars are constructed. During the observation period, outbursts at 18-70 keV at levels of 13 mCrab and 111 mCrab were detected for X1845-024 and XTE J1858+034, respectively. We refined the rotational period of the neutron star in XTE J1858+034 (220.4 s), measured its acceleration during the outburst, and derived a probable value of the orbital period (≃380 d).

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