Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Zharikov, S. V."'
Autor:
Bobakov, A. V., Kirichenko, A. Yu., Zharikov, S. V., Karpova, A. V., Zyuzin, D. A., Shibanov, Yu. A., Mennickent, R. E., Garcia-Álvarez, D.
Context. Two millisecond pulsars, PSR J1513$-$2550 and PSR J2017$-$1614, with spin periods of about 2.1 and 2.3 ms were recently discovered in the radio and $\gamma$-rays and classified as black widow pulsars in tight binary stellar systems with orbi
Externí odkaz:
http://arxiv.org/abs/2407.17187
Autor:
Zyuzin, D. A., Kirichenko, A. Yu., Karpova, A. V., Shibanov, Yu. A., Zharikov, S. V., Gilfanov, M. R., Tórtola, C. Perez
An unidentified $\gamma$-ray source 4FGL J1838.2+3223 has been proposed as a pulsar candidate. We present optical time-series multi-band photometry of its likely optical companion obtained with the 2.1-m telescope of Observatorio Astron\'omico Nacion
Externí odkaz:
http://arxiv.org/abs/2311.09108
Autor:
Kirichenko, A. Yu., Zharikov, S. V., Karpova, A. V., Fonseca, E., Zyuzin, D. A., Shibanov, Yu. A., López, E. A., Gilfanov, M. R., Cabrera-Lavers, A., Geier, S., Dong, F. A., Good, D. C., McKee, J. W., Meyers, B. W., Stairs, I. H., McLaughlin, M. A., Swiggum, J. K.
PSR J1641+8049 is a 2 ms black widow pulsar with the 2.2 h orbital period detected in the radio and $\gamma$-rays. We performed new phase-resolved multi-band photometry of PSR J1641+8049 using the OSIRIS instrument at the Gran Telescopio Canarias. Th
Externí odkaz:
http://arxiv.org/abs/2311.08688
Autor:
Bobakov, A. V., Karpova, A. V., Zharikov, S. V., Kirichenko, A. Yu., Shibanov, Yu. A., Zyuzin, D. A.
We present the results of optical spectroscopy of stellar companions to three binary millisecond pulsars, PSRs J0621$+$2514, J2317$+$1439 and J2302$+$4442, obtained with the Gran Telescopio Canarias. The spectrum of the J0621$+$2514 companion shows a
Externí odkaz:
http://arxiv.org/abs/2307.02167
Autor:
Zyuzin, D. A., Zharikov, S. V., Karpova, A. V., Kirichenko, A. Yu., Shibanov, Yu. A., Geier, S., Potekhin, A. Yu., Suleimanov, V. F., Cabrera-Lavers, A.
Publikováno v:
Mon. Not. R. Astron. Soc., 513, 6088-6094 (2022)
The 840 kyr old pulsar PSR J1957+5033, detected so far only in $\gamma$- and X-rays, is a nearby and rather cool neutron star with a temperature of 0.2--0.3 MK, a distance of $\la$1 kpc, and a small colour reddening excess $E(B-V) \approx 0.03$. Thes
Externí odkaz:
http://arxiv.org/abs/2205.13606
Autor:
Miroshnichenko, A. S., Danford, S., Zharikov, S. V., Klochkova, V. G., Chentsov, E. L., Vanbeveren, D., Zakhozhay, O. V., Manset, N., Pogodin, M. A., Omarov, C. T., Kuratova, A. K., Khokhlov, S. A.
We report the results of a long-term spectroscopic monitoring of the A-type supergiant with the B[e] phenomenon 3 Pup = HD 62623. We confirm earlier findings that it is a binary system. The orbital parameters were derived using cross-correlation of t
Externí odkaz:
http://arxiv.org/abs/2005.07754
Autor:
Kirichenko, A. Yu., Karpova, A. V., Zyuzin, D. A., Zharikov, S. V., Lopez, E. A., Shibanov, Yu. A., Freire, P. C. C., Fonseca, E., Cabrera-Lavers, A.
We report on multi-band photometric observations of four binary millisecond pulsars with the Gran Telescopio Canarias. The observations led to detection of binary companions to PSRs J1630+3734, J1741+1351 and J2042+0246 in the Sloan g', r' and i' ban
Externí odkaz:
http://arxiv.org/abs/2001.02722
Autor:
Neustroev, V. V., Zharikov, S. V.
Publikováno v:
A&A 642, A100 (2020)
In our earlier Paper I we showed that the accretion disc radius of the dwarf nova HT Cas in its quiescent state has not changed significantly during many years of observations. It has remained consistently large, close to the tidal truncation radius.
Externí odkaz:
http://arxiv.org/abs/1908.10867
Autor:
Zyuzin, D. A., Kirichenko, A. Yu., Karpova, A. V., Shibanov, Yu. A., Zharikov, S. V., Fonseca, E., Cabrera-Lavers, A.
We report detection of the binary companion to the millisecond pulsar J1741+1351 with the Gran Telescopio Canarias. The optical source position coincides with the pulsar coordinates and its magnitudes are g' = 24.84(5), r' = 24.38(4) and i' = 24.17(4
Externí odkaz:
http://arxiv.org/abs/1904.00331
Autor:
Beronya, D. M., Karpova, A. V., Kirichenko, A. Yu., Zharikov, S. V., Zyuzin, D. A., Shibanov, Yu. A., Cabrera-Lavers, A.
We report the detection of the likely companion of the binary millisecond pulsar J0740+6620 with the Gran Telescopio Canarias in the $r'$ and $i'$ bands. The position of the detected starlike source coincides with the pulsar coordinates within the 1$
Externí odkaz:
http://arxiv.org/abs/1902.11150