Study sheds more light on the nature of the transient X-ray pulsar MAXI J1409-619

phys.org | 10/17/2010 | Staff
kimskims (Posted by) Level 3
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2-60 keV 1-day binned RXTE-PCA lightcurve of MAXI J1409-619. Credit: Dönmez et al., 2019.

Turkish astronomers have analyzed the observational data of the transient X-ray pulsar MAXI J1409-619 to probe the properties of this source. The study provided a comprehensive timing and X-ray spectral analysis of the pulsar, shedding more light on the nature of this object. Results of the research were published November 7 on arXiv.org.

Pulsars - Pulsars - Sources - Variations - Intensity

X-ray pulsars (also known as accretion-powered pulsars) are sources displaying strict periodic variations in X-ray intensity, consisting of a magnetized neutron star in orbit with a normal stellar companion. In these binary systems, the X-ray emission is powered by the release of gravitational potential energy as material is accreted from a massive companion. X-ray pulsars are among the most luminous objects in the X-ray sky.

Discovered on October 17, 2010 as part of the Monitor of All-sky X-ray Image (MAXI) experiment, MAXI J1409-619 is a transient pulsar in a high-mass X-ray binary (HMXB) system. On November 30, 2010, it underwent an outburst, becoming about seven times brighter when compared to the initial observations that revealed its 503-second periodicity with 42 percent sinusoidal peak-to-through modulation.

Identification - MAXI - J1409-619 - Neil - Gehrels

After its identification, MAXI J1409-619 was observed by the Neil Gehrels Swift Observatory and the Rossi X-ray Timing Explorer (RXTE). A group of astronomers led by Çağatay Kerem Dönmez of the Middle East Technical University in Ankara, Turkey, reports that the results of these observations unveiled more details about the nature of...
(Excerpt) Read more at: phys.org
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