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4FGL J1544.22554: a new spider pulsar candidate
A. V. Karpova, S. V. Zharikov, D. A. Zyuzin +3
Context. Spider pulsars are millisecond pulsars in tight binary systems, in which a low-mass companion star is heated and ablated by the pulsar wind. Their observations allow one t…
SRGe J194401.8+284452 -- an X-ray Cataclysmic Variable in the Field of the Gamma-Ray Source 4FGL J1943.9+2841
A. I. Kolbin, A. V. Karpova, M. V. Suslikov +19
SRGe J194401.8+284452 is the brightest point-like X-ray object within the position uncertainty ellipse of an unidentified -ray source 4FGL J1943.9+2841. We performed multi-wavel…
Two black widow pulsars in the optical and X-rays
A. V. Bobakov, A. Yu. Kirichenko, S. V. Zharikov +5
Context. Two millisecond pulsars, PSR J15132550 and PSR J20171614, with spin periods of about 2.1 and 2.3 ms were recently discovered in the radio and -rays and classified…