Search Results - "Fabrika, Sergei"

Supercritical accretion disks in ultraluminous X-ray sources and SS 433 by Fabrika, Sergei, Ueda, Yoshihiro, Vinokurov, Alexander, Sholukhova, Olga, Shidatsu, Megumi

“…The brightest extragalactic black holes emit X-rays with intensities that are thousands of times greater than those from black holes within our Galaxy…”
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Discovery of an X-Ray Photoionized Optical Nebula and a Radio Nebula Associated with the ULX NGC 4861 X-1 by Gong, Hang, Urquhart, Ryan, Vinokurov, Alexandr, Bai, Yu, Cabrera-Lavers, Antonio, Fabrika, Sergei, Wang, Liang, Liu, Jifeng

“…Abstract We have conducted long-slit spectroscopic observations and analyzed archival radio data for the ultraluminous X-ray source (ULX) NGC 4861 X-1. Our…”
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Exoplanet Two-Square Degree Survey With SAO RAS Robotic Facilities by Yakovlev, Oleg Ya, Valeev, Azamat F., Valyavin, Gennady G., Tavrov, Alexander V., Aitov, Vitaly N., Mitiani, Guram Sh, Korablev, Oleg I., Galazutdinov, Gazinur A., Beskin, Grigory M., Emelianov, Eduard V., Fatkhullin, Timur A., Vlasyuk, Valery V., Sasyuk, Vyacheslav V., Perkov, Alexei V., Bondar, Sergei, Burlakova, Tatyana E., Fabrika, Sergei N., Romanyuk, Iosif I.

“…We used the 0.5-m robotic telescope located at the Special Astrophysical Observatory of the Russian Academy of Sciences for monitoring two square degrees of…”
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Suzaku X-Ray and Optical Spectroscopic Observations of SS 433 in the 2006 April Multiwavelength Campaign by Kubota, Kaori, Ueda, Yoshihiro, Kawai, Nobuyuki, Kotani, Taro, Namiki, Masaaki, Kinugasa, Kenzo, Ozaki, Shinobu, Iijima, Takashi, Fabrika, Sergei, Yuasa, Takayuki, Yamada, Shin’ya, Makishima, Kazuo

“…We report on results of the 2006 April multiwavelength campaign of SS 433, focusing on X-ray data observed with Suzaku at two orbital phases (in- and…”
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NGC 5474 X-1: A neutron star ultraluminous X-ray source in an old stellar cluster? by Atapin, Kirill, Vinokurov, Alexander, Sarkisyan, Arkadiy, Solovyeva, Yulia, Kostenkov, Alexander, Medvedev, Aleksei, Fabrika, Sergei

“…ABSTRACT We present an optical and X-ray study of the ultraluminous X-ray source (ULX) NGC 5474 X-1. The X-ray spectrum taken during the bright state of the…”
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On the association of the ultraluminous X-ray sources in the Antennae galaxies with young stellar clusters by Poutanen, Juri, Fabrika, Sergei, Valeev, Azamat F., Sholukhova, Olga, Greiner, Jochen

“…The nature of the ultraluminous X-ray sources (ULXs) in the nearby galaxies is a matter of debates. One of the popular hypothesis associates them with…”
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Ultraluminous X-ray sources with flat-topped noise and QPO by Atapin, Kirill, Fabrika, Sergei, Caballero-García, Maria D

“…ABSTRACT We analysed the X-ray power density spectra of five ultraluminous X-ray sources (ULXs) NGC 5408 X-1, NGC 6946 X-1, M 82 X-1, NGC 1313 X-1, and IC…”
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Supercritically accreting stellar mass black holes as ultraluminous X-ray sources by Poutanen, Juri, Lipunova, Galina, Fabrika, Sergei, Butkevich, Alexey G., Abolmasov, Pavel

“…We derive the luminosity–temperature relation for the supercritically accreting black holes (BHs) and compare it to the data on ultraluminous X-ray sources…”
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X-ray variability of SS 433: effects of the supercritical accretion disc by Atapin, Kirill, Fabrika, Sergei, Medvedev, Aleksei, Vinokurov, Alexander

“…We study a stochastic variability of SS 433 in the 10...-5 x 10... Hz frequency range based on RXTE data, and on simultaneous observations with RXTE and…”
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Optical Counterparts of ULXs and Their Host Environments in NGC 4490/4485 by Avdan, Senay, Akyuz, Aysun, Vinokurov, Alexander, Aksaker, Nazim, Avdan, Hasan, Fabrika, Sergei, Valeev, Azamat, Akkaya-Oralhan, Inci, Balman, ölen

“…We report the identification of the possible optical counterparts of five out of seven ultraluminous X-ray sources (ULXs) in the galaxy pair NGC 4490/4485…”
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Experimental Study of an Advanced Concept of Moderate-resolution Holographic Spectrographs by Muslimov, Eduard, Valyavin, Gennady, Fabrika, Sergei, Musaev, Faig, Galazutdinov, Gazinur, Pavlycheva, Nadezhda, Emelianov, Eduard

“…We present the results of an experimental study of an advanced moderate-resolution spectrograph based on a cascade of narrow-band holographic gratings. The…”
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Experimental Study of an Advanced Concept of Moderate-resolution Holographic Spectrographs by Muslimov, Eduard, Valyavin, Gennady, Fabrika, Sergei, Musaev, Faig, Galazutdinov, Gazinur, Pavlycheva, Nadezhda, Emelianov, Eduard

“…We present the results of an experimental study of an advanced moderate-resolution spectrograph based on a cascade of narrow-band holographic gratings. The…”
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EXPLANATION: Exoplanet and Transient Event Investigation Project—Optical Facilities and Solutions by Valyavin, Gennady, Beskin, Grigory, Valeev, Azamat, Galazutdinov, Gazinur, Fabrika, Sergei, Romanyuk, Iosif, Aitov, Vitaly, Yakovlev, Oleg, Ivanova, Anastasia, Baluev, Roman, Vlasyuk, Valery, Han, Inwoo, Karpov, Sergei, Sasyuk, Vyacheslav, Perkov, Alexei, Bondar, Sergei, Musaev, Faig, Emelianov, Eduard, Fatkhullin, Timur, Drabek, Sergei, Shergin, Vladimir, Lee, Byeong-Cheol, Mitiani, Guram, Burlakova, Tatiana, Yushkin, Maksim, Sendzikas, Eugene, Gadelshin, Damir, Chmyreva, Lisa, Beskakotov, Anatoly, Dyachenko, Vladimir, Rastegaev, Denis, Mitrofanova, Arina, Yakunin, Ilia, Antonyuk, Kirill, Plokhotnichenko, Vladimir, Gutaev, Alexei, Lyapsina, Nadezhda, Chernenkov, Vladimir, Biryukov, Anton, Ivanov, Evgenij, Katkova, Elena, Belinski, Alexander, Sokov, Eugene, Tavrov, Alexander, Korablev, Oleg, Park, Myeong-Gu, Stolyarov, Vladislav, Bychkov, Victor, Gorda, Stanislav, Popov, A. A., Sobolev, A. M.

“…Over the past decades, the achievements in astronomical instrumentation have given rise to a number of novel advanced studies related to the analysis of large…”
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Supercritically accreting stellar mass black holes as ultraluminous X-ray sources by Poutanen, Juri, Lipunova, Galina, Fabrika, Sergei, Butkevich, Alexey G., Abolmasov, Pavel

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X-ray Variability of SS 433: Evidence for Supercritical Accretion by Atapin, Kirill, Fabrika, Sergei

“…Astron. Lett., 42, 517 (2016) We study the X-ray variability of SS433 based on data from the ASCA observatory and the MAXI and RXTE/ASM monitoring missions…”
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Discovery of An X-ray Photoionized Optical Nebula and A Radio Nebula Associated with the ULX NGC 4861 X-1 by Gong, Hang, Urquhart, Ryan, Vinokurov, Alexandr, Bai, Yu, Cabrera-Lavers, Antonio, Fabrika, Sergei, Wang, Liang, Liu, Jifeng

“…We have conducted long-slit spectroscopic observations and analyzed archival radio data for the ultraluminous X-ray source (ULX) NGC 4861 X-1. Our spectral…”
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NGC 5474 X-1: a neutron star ULX in an old stellar cluster? by Atapin, Kirill, Vinokurov, Alexander, Sarkisyan, Arkadiy, Solovyeva, Yulia, Kostenkov, Alexander, Medvedev, Aleksei, Fabrika, Sergei

“…We present the optical and X-ray study of the ultraluminous X-ray source (ULX) NGC 5474 X-1. The X-ray spectrum taken during the bright state of the source…”
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NuSTAR and Swift observations of the ultraluminous X-ray source IC 342 X-1 in 2016: witnessing spectral evolution by Shidatsu, Megumi, Ueda, Yoshihiro, Fabrika, Sergei

“…We report on an X-ray observing campaign of the ultraluminous X-ray source IC 342 X-1 with NuSTAR and Swift in 2016 October, in which we captured the very…”
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Ultraluminous X-ray sources as super-Eddington accretion disks by Fabrika, Sergei, Vinokurov, Alexander, Atapin, Kirill

“…The origin of Ultraluminous X-ray sources (ULXs) in external galaxies whose X-ray luminosities exceed those of the brightest black holes in our Galaxy by…”
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Combined narrowband imager-spectrograph with volume-phase holographic gratings by Muslimov, Eduard R, Fabrika, Sergei N, Valyavin, Gennady G

“…In the present work we discuss a possibility to build an instrument with two operation modes - spectral and imaging ones. The key element of such instrument is…”
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