Search Results - "Zaznobin, I. A"

Optical Identification of New Candidates for Quasars at 3 <z < 5.5 from the XMM-Newton X-ray Survey by Khorunzhev, G. A., Burenin, R. A., Sazonov, S. Yu, Zaznobin, I. A., Eselevich, M. V., Afanasiev, V. L., Dodonov, S. N.

“…We present the results of optical spectroscopy for 39 quasar candidates at photometric redshifts z phot ≳ 3 from the catalog by Khorunzhev et al. (2016) (K16)…”
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New Active Galactic Nuclei Detected by the ART-XC and eROSITA Telescopes during the First Five SRG All-Sky X-ray Surveys. Part 2 by Uskov, G. S., Sazonov, S. Yu, Zaznobin, I. A., Gilfanov, M. R., Burenin, R. A., Filippova, E. V., Medvedev, P. S., Moskaleva, A. V., Sunyaev, R. A., Krivonos, R. A., Eselevich, M. V.

“…We present the results of our identification of 11 X-ray sources detected on the half of the sky in the 4–12 keV energy band on the combined map of the first…”
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Optical Identification of Galaxy Clusters among SRG/eROSITA X-ray Sources Based on Photometric Redshift Estimates for Galaxies by Zaznobin, I. A., Burenin, R. A., Meshcheryakov, A. V., Gilfanov, M. R., Lyskova, N. S., Medvedev, P. S., Sazonov, S. Yu, Sunyaev, R. A.

“…We discuss an algorithm whereby the massive galaxy clusters detected in the SRG/eROSITA all-sky survey are identified and their photometric redshifts are…”
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New Active Galactic Nuclei Detected by the ART-XС and eROSITA Telescopes during the First Five SRG All-Sky X-ray Surveys by Uskov, G. S., Sazonov, S. Yu, Zaznobin, I. A., Burenin, R. A., Gilfanov, M. R., Medvedev, P. S., Sunyaev, R. A., Krivonos, R. A., Filippova, E. V., Khorunzhev, G. A., Eselevich, M. V.

“…We present the results of our identification of 14 X-ray sources detected in the eastern Galactic sky ( ) in the 4–12 keV energy band on the combined map of…”
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Search for Tidal Disruption Events Based on the SRG/eROSITA Survey with Subsequent Optical Spectroscopy by Khorunzhev, G. A., Sazonov, S. Yu, Medvedev, P. S., Gilfanov, M. R., Atapin, K. E., Belinski, A. A., Vozyakova, O. V., Dodin, A. V., Safonov, B. S., Tatarnikov, A. M., Bikmaev, I. F., Burenin, R. A., Dodonov, S. N., Eselevich, M. V., Zaznobin, I. A., Krivonos, R. A., Uklein, R. I., Postnov, K. A., Sunyaev, R. A.

“…The four completed six-month sky surveys with the eROSITA telescope onboard the SRG orbital observatory allow tidal disruption events (TDEs) in galactic nuclei…”
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Observations of Massive Galaxy Clusters from the All-Sky Survey with the eROSITA Telescope Onboard the SRG Space Observatory by Burenin, R. A., Zaznobin, I. A., Medvedev, P. S., Gilfanov, M. R., Kotov, S. S., Uklein, R. I., Dodonov, S. N., Moiseev, A. V., Eselevich, M. V., Bikmaev, I. F., Lyskova, N. S., Meshcheryakov, A. V., Postnov, K. A., Sazonov, S. Yu, Starobinsky, A. A., Sunyaev, R. A., Churazov, E. M.

“…We present the results of our search for massive galaxy clusters among extended X-ray sources from the SRG/eROSITA survey using data from the Planck survey and…”
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Optical Identifications of High-Redshift Galaxy Clusters from the Planck Sunyaev–Zeldovich Survey by Burenin, R. A., Bikmaev, I. F., Khamitov, I. M., Zaznobin, I. A., Khorunzhev, G. A., Eselevich, M. V., Afanasiev, V. L., Dodonov, S. N., Rubiño-Martín, J.-A., Aghanim, N., Sunyaev, R. A.

“…We present the results of optical identifications and spectroscopic redshift measurements for galaxy clusters from the second Planck catalogue of…”
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New Active Galactic Nuclei Detected by the ART-XС and eROSITA Telescopes Onboard the SRG Observatory during an All-Sky X-ray Survey by Uskov, G. S., Zaznobin, I. A., Sazonov, S. Yu, Semena, A. N., Gilfanov, M. R., Burenin, R. A., Eselevich, M. V., Krivonos, R. A., Lyapin, A. R., Medvedev, P. S., Khorunzhev, G. A., Sunyaev, R. A.

“…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…”
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Spectroscopic Redshift Measurements for Galaxy Clusters Detected in the Planck All-Sky Survey by Zaznobin, I. A., Burenin, R. A., Bikmaev, I. F., Khamitov, I. M., Khorunzhev, G. A., Lyapin, A. R., Eselevich, M. V., Afanasiev, V. L., Dodonov, S. N., Sunyaev, R. A.

“…We present the results of spectroscopic redshift measurements for galaxy clusters from the catalogue compiled previously from Planck all-sky survey data in…”
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Spectroscopic Redshift Measurements for Galaxy Clusters from the Planck Survey and Observations of These Clusters in the SRG/eROSITA Survey by Zaznobin, I. A., Burenin, R. A., Bikmaev, I. F., Khamitov, I. M., Khorunzhev, G. A., Lyapin, A. R., Eselevich, M. V., Lyskova, N. S., Medvedev, P. S., Gilfanov, M. R., Sunyaev, R. A.

“…We present the results of our spectroscopic redshift measurements for galaxy clusters detected previously from Planck all-sky survey data as well as Sloan…”
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SRGe J214919.3+673634—a Candidate for AM Her Variables Discovered by the eROSITA Telescope onboard the Spectrum–Roentgen–Gamma Orbital Observatory by Bikmaev, I. F., Kolbin, A. I., Shimansky, V. V., Khamitov, I. M., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Burenin, R. A., Gilfanov, M. R., Zaznobin, I. A., Krivonos, R. A., Medvedev, P. S., Meshcheryakov, A. V., Sazonov, S. Yu, Sunyaev, R. A., Khorunzhev, G. A., Moiseev, A. V., Malygin, E. A., Shablovinskaya, E. S., Zheltoukhov, S. G.

“…We present the results of the optical identification, classification, and analysis of our photometric and spectroscopic observations of the X-ray transient…”
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Optical Identification and Spectroscopic Redshift Measurements of 216 Galaxy Clusters from the SRG/eROSITA All-Sky Survey by Zaznobin, I. A., Burenin, R. A., Belinski, A. A., Bikmaev, I. F., Gilfanov, M. R., Dodin, A. V., Dodonov, S. N., Eselevich, M. V., Zheltoukhov, S. F., Irtuganov, E. N., Kotov, S. S., Krivonos, R. A., Lyskova, N. S., Malygin, E. A., Maslennikova, N. A., Medvedev, P. S., Meshcheryakov, A. V., Moiseev, A. V., Oparin, D. V., Potanin, S. A., Postnov, K. A., Sazonov, S. Yu, Safonov, B. S., Sakhibullin, N. A., Starobinsky, A. A., Suslikov, M. V., Sunyaev, R. A., Tatarnikov, A. M., Uskov, G. S., Uklein, R. I., Khabibullin, I. I., Khamitov, I. M., Khorunzhev, G. A., Churazov, E. M., Shablovinskaya, E. S., Shatsky, N. I.

“…We present the results of the optical identification and spectroscopic redshift measurements of 216 galaxy clusters detected in the SRG/eROSITA all-sky X-ray…”
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Search for Distant and X-ray Luminous Quasars during the SRG/eROSITA Sky Survey (the DaLeQo Program). The First Results from Observations at the BTA Telescope by Khorunzhev, G. A., Dodonov, S. N., Meshcheryakov, A. V., Moiseev, A. V., Grokhovskaya, A. A., Kotov, S. S., Malygin, E. A., Uklein, R. I., Shablovinskaya, E. S., Medvedev, P. S., Borisov, V. D., Burenin, R. A., Krivonos, R. A., Uskov, G. S., Zaznobin, I. A., Sunyaev, R. A., Sazonov, S. Yu, Gilfanov, M. R.

“…We discuss the results of our spectroscopy for 17 candidates for distant quasars selected by the SRGz classification system based on data from the first and…”
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Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. I by Bikmaev, I. F., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Sklyanov, A. S., Glushkov, M. V., Borisov, V. D., Burenin, R. A., Zaznobin, I. A., Krivonos, R. A., Lyapin, A. R., Medvedev, P. S., Meshcheryakov, A. V., Sazonov, S. Yu, Sunyaev, R. A., Khorunzhev, G. A., Gilfanov, M. R.

“…Results of the first spectroscopic observations at the 1.5-m Russian–Turkish telescope for the X-ray sources discovered by the eROSITA telescope onboard the…”
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Optical Identification of Candidates for Active Galactic Nuclei Detected by the Mikhail Pavlinsky ART-XC Telescope Onboard the SRG Observatory during an All-Sky X-ray Survey by Zaznobin, I. A., Uskov, G. S., Sazonov, S. Yu, Burenin, R. A., Medvedev, P. S., Khorunzhev, G. A., Lyapin, A. R., Krivonos, R. A., Filippova, E. V., Gilfanov, M. R., Sunyaev, R. A., Eselevich, M. V., Bikmaev, I. F., Irtuganov, E. N., Nikolaeva, E. A.

“…We present the results of our identification of eight objects from the preliminary catalogue of X-ray sources detected in the 4–12 keV energy band by the…”
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Spectroscopic Redshift Measurements for Galaxy Clusters from the Lockman Hole Survey with the eROSITA Telescope Onboard the SRG Observatory by Zaznobin, I. A., Burenin, R. A., Lyapin, A. R., Khorunzhev, G. A., Afanasiev, V. L., Grokhovskaya, A. A., Dodonov, S. N., Eselevich, M. V., Uklein, R. I., Bikmaev, I. F., Khamitov, I. M., Gilfanov, M. R., Lyskova, N. S., Medvedev, P. S., Sunyaev, R. A.

“…We present the first results of our program of optical observations for galaxy clusters from the Lockman Hole X-ray survey with the eROSITA telescope onboard…”
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Optical Identification of Four Hard X-ray Sources from the INTEGRAL Sky Surveys by Karasev, D. I., Sazonov, S. Yu, Tkachenko, A. Yu, Khorunzhev, G. A., Krivonos, R. A., Medvedev, P. S., Zaznobin, I. A., Mereminskiy, I. A., Burenin, R. A., Pavlinsky, M. N., Eselevich, M. V.

“…We continue the study begun in Karasev et al. (2018) and present the results of our optical identifications of four hard X-ray sources from the INTEGRAL sky…”
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Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. II by Bikmaev, I. F., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Sklyanov, A. S., Glushkov, M. V., Khamitov, I. M., Borisov, V. D., Burenin, R. A., Zaznobin, I. A., Krivonos, R. A., Lyapin, A. R., Medvedev, P. S., Meshcheryakov, A. V., Sazonov, S. Yu, Sunyaev, R. A., Khorunzhev, G. A., Gilfanov, M. R.

“…Results of the spectroscopic observations at the 1.5-m Russian–Turkish telescope for another group of 12 X-ray sources discovered by the eROSITA telescope…”
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Observation of a Very Massive Galaxy Cluster at = 0.76 in the SRG/eROSITA All-Sky Survey by Burenin, R. A., Bikmaev, I. F., Gilfanov, M. R., Grokhovskaya, A. A., Dodonov, S. N., Eselevich, M. V., Zaznobin, I. A., Irtuganov, E. N., Lyskova, N. S., Medvedev, P. S., Meshcheryakov, A. V., Moiseev, A. V., Sazonov, S. Yu, Starobinsky, A. A., Sunyaev, R. A., Uklein, R. I., Khabibullin, I. I., Khamitov, I. M., Churazov, E. M.

“…The results of multiwavelength observations of the very massive galaxy cluster SRGe CL2305.2–2248 detected in X-rays during the first SRG/eROSITA all-sky…”
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Optical Identification of Galaxy Clusters among SRG/eROSITA X-ray Sources Based on Photometric Redshift Estimates for Galaxies by Zaznobin, I. A, Burenin, R. A, Meshcheryakov, A. V, Gilfanov, M. R, Lyskova, N. S, Medvedev, P. S, Sazonov, S. Yu, Sunyaev, R. A

“…Astronomy Letters 49 (2023) 431-444 We discuss an algorithm whereby the massive galaxy clusters detected in the SRG/eROSITA all-sky survey are identified and…”
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