A new soft X-ray transient from the XMM-Newton slew survey

Astronomy and Astrophysics – Astronomy

Scientific paper

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Optical, X-Ray, Request For Observations, Transients

Scientific paper

We report the discovery of a new soft X-ray transient, XMMSL1 J072822.2+745406, found in an XMM-Newton slew of April 26th. The source position is RA: 07 28 22.2 DEC: 74 54 06 with an 8", 1 sigma, error circle. The source count rate was 1.1 c/s in the EPIC-pn detector and the spectrum is soft with no events above 2 keV. The unabsorbed flux is 2.3E-12 ergs/s/cm^2 (0.2-2 keV; for a black-body spectral model of temperature 130eV and galactic absorption of NH=3.75E20).

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