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Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift

Yershov, V. N.

Two UV serendipitous source catalogues are presented which were compiled based on the observations with two similar UV telescopes, one being on-board the ESA's XMM Newton observatory and another—on-board the NASA's Swift satellite. Both telescopes have similar optical and registration systems providing photometry in three ultraviolet and three vis…

The distant galaxy cluster XLSSJ022403.9-041328 on the L_X–T_X–M scaling relations using Chandra and XMM–Newton observations

Babyk, I.; Vavilova, I.

We present a very detailed analysis of Chandra and XMM–Newton observations of XLSSJ022403.9-041328 galaxy cluster of z=1, which was detected during the XMM-Newton Large Scale Structure survey. To define the "luminosity-temperature-mass", L_X–T_X–M, scaling relations we built temperature, surface brightness, density, and mass pr…

A search for periodicities from a ULX in the LINER galaxy NGC 4736

Balman, Solen; Akyuz, Aysun; Avdan, Hasan +1 more

We report our findings on a new quasi-periodic oscillation (QPO) and a long period from the ultraluminous X-ray source (ULX) X-2 in nearby galaxy NGC 4736 based on the Chandra and XMM-Newton archival data. To examine the timing properties, power density spectra of the source have been obtained using Fast Fourier Transform. Also the spectral parame…