Zobrazeno 1 - 10
of 296
pro vyhledávání: '"Gilfanov Marat"'
We report the discovery of a short, large amplitude X-ray flare from AT2019vcb (aka Tormund), a tidal disruption event at $z=0.088$. The discovery is based on the data from the SRG/eROSITA X-ray telescope which happened to observe the source seven mo
Externí odkaz:
http://arxiv.org/abs/2409.16908
Autor:
Mukhin, Andrey, Krivonos, Roman, Bikmaev, Ilfan, Gorbachev, Mark, Khamitov, Irek, Sazonov, Sergey, Gilfanov, Marat, Sunyaev, Rashid
In this work, we studied X-ray source SRGe~J021932.4$-$040154 (SRGe J021932), which we associated with a single X-ray active star of spectral class G2V-G4V and the rotational period $\rm P_{rot} < 9.3$ days. Additional analysis of TESS light-curves a
Externí odkaz:
http://arxiv.org/abs/2408.07442
Publikováno v:
Astronomy Letters, 2023, Vol. 49, No. 11, pp. 621-638
In the fall of 2019, during the in-flight calibration phase of the SRG observatory, the onboard eROSITA and Mikhail Pavlinsky ART-XC telescopes carried out a series of observations of PG 1634+706 - one of the most luminous (an X-ray luminosity $\sim
Externí odkaz:
http://arxiv.org/abs/2403.17865
Autor:
Galiullin, Ilkham, Rodriguez, Antonio C., Kulkarni, Shrinivas R., Sunyaev, Rashid, Gilfanov, Marat, Bikmaev, Ilfan, Yungelson, Lev, van Roestel, Jan, Gänsicke, Boris T., Khamitov, Irek, Szkody, Paula, El-Badry, Kareem, Suslikov, Mikhail, Prince, Thomas A., Buntov, Mikhail, Caiazzo, Ilaria, Gorbachev, Mark, Graham, Matthew J., Gumerov, Rustam, Irtuganov, Eldar, Laher, Russ R., Medvedev, Pavel, Riddle, Reed, Rusholme, Ben, Sakhibullin, Nail, Sklyanov, Alexander, Vanderbosch, Zachary P.
Cataclysmic variables (CVs) that have evolved past the period minimum during their lifetimes are predicted to be systems with a brown dwarf donor. While population synthesis models predict that around $\approx 40-70\%$ of the Galactic CVs are post-pe
Externí odkaz:
http://arxiv.org/abs/2401.04178
Publikováno v:
BIO Web of Conferences, Vol 31, p 00011 (2021)
There is a possibility of using agricultural waste, in particular weeds, in innovative technologies for the restoration of disturbed land in order to increase fertility. Digestate, after anaerobic digestion of manure and weed plant Amaranthus retrofl
Externí odkaz:
https://doaj.org/article/1fa8730b015a43ff8a445f7ce2f3774e
Publikováno v:
Astronomy Letters, 2022, Vol. 48, 12, pp. 735-754
We present the results of our search for highly variable active galactic nuclei (AGNs) the X-ray flux from which changed by more than an order of magnitude during the SRG/eROSITA all-sky survey. Using the eROSITA data obtained in the period from Dece
Externí odkaz:
http://arxiv.org/abs/2309.11266
Autor:
Rodriguez, Antonio C., Galiullin, Ilkham, Gilfanov, Marat, Kulkarni, Shrinivas R., Khamitov, Irek, Bikmaev, Ilfan, van Roestel, Jan, Yungelson, Lev, El-Badry, Kareem, Sunayev, Rashid, Prince, Thomas A., Buntov, Mikhail, Caiazzo, Ilaria, Drake, Andrew, Gorbachev, Mark, Graham, Matthew J., Gumerov, Rustam, Irtuganov, Eldar, Laher, Russ R., Masci, Frank J., Medvedev, Pavel, Purdum, Josiah, Sakhibullin, Nail, Sklyanov, Alexander, Smith, Roger, Szkody, Paula, Vanderbosch, Zachary P.
AM CVn systems are ultra-compact binaries where a white dwarf accretes from a helium-rich degenerate or semi-degenerate donor. Some AM CVn systems will be among the loudest sources of gravitational waves for the upcoming Laser Interferometer Space An
Externí odkaz:
http://arxiv.org/abs/2306.13133
Autor:
Uskov, Grigory, Sazonov, Sergey, Zaznobin, Igor, Burenin, Rodion, Gilfanov, Marat, Medvedev, Pavel, Sunyaev, Rashid, Krivonos, Roman, Filippova, Ekaterina, Khorunzhev, Georgii, Eselevich, Maksim
Publikováno v:
Astronomy Letters, 2023, Vol. 49, No. 2
We present the results of our identification of 14 X-ray sources detected in the eastern Galactic sky ($0
Externí odkaz:
http://arxiv.org/abs/2306.08646
X-ray appearance of normal galaxies is mainly determined by X-ray binaries powered by accretion onto a neutron star or a stellar mass black hole. Their populations scale with the star-formation rate and stellar mass of the host galaxy and their X-ray
Externí odkaz:
http://arxiv.org/abs/2304.14080
Autor:
Uskov, Grigory, Zaznobin, Igor, Sazonov, Sergey, Semena, Andrey, Gilfanov, Marat, Burenin, Rodion, Eselevich, Maksim, Krivonos, Roman, Lyapin, Alexander, Medvedev, Pavel, Khorunzhev, Georgii, Sunyaev, Rashid
Publikováno v:
Astronomy Letters, 2022, Vol. 48, No. 2
We present the results of our identification of 17 X-ray sources detected in the 4-12 keV energy range by the Mikhail Pavlinsky ART-XC telescope during the first year of the SRG all-sky survey. Three of them have been discovered by the ART-XC telesco
Externí odkaz:
http://arxiv.org/abs/2208.10963