Merger of massive galaxy cluster CL0238.3+2005 at z~0.4: just after pericenter passage?

Autor: Lyskova, N., Churazov, E., Khabibullin, I., Bikmaev, I. F., Burenin, R. A., Forman, W. R., Khamitov, I. M., Rajpurohit, K., Sunyaev, R., Jones, C., Kraft, R., Zaznobin, I., Gorbachev, M. A., Suslikov, M. V., Gumerov, R. I., Sakhibullin, N. A.

Massive clusters of galaxies are very rare in the observable Universe. Even rarer are mergers of such clusters observed close to pericenter passage. Here, we report on one such case: a massive (~ $10^{15}\,M_\odot$) and hot (kT ~ 10 keV) cluster CL02

Externí odkaz: http://arxiv.org/abs/2409.07856

Optical Identification and Spectroscopic Redshift Measurements of 216 Galaxy Clusters from the SRG/eROSITA All-Sky Survey

Autor: 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.

Publikováno v: Astronomy Letters 49 (2023) 599-620

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 survey. The spectroscopic observations were performed in 2020-2023 with the 6-m BTA telescop

Externí odkaz: http://arxiv.org/abs/2403.18625

SRGe2149+6736 -- the new candidate to AM~Her type variables discovered by eROSITA telescope on 'Spectrum--Roentgen--Gamma' orbital observatory

Autor: 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., Mescheryakov, 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, as well as analysis of photometric and spectral observations of the X-ray transient SRGe2149+6736 detected by the eROSITA telescope during SRG all-sky X-ray survey. Photometric obs

Externí odkaz: http://arxiv.org/abs/2212.12425

Spectroscopic study of the optical counterpart to the Fast X-ray Transient IGR J17544-2619 based on observations at the 1.5-m RTT-150 telescope

Autor: Bikmaev, I. F., Nikolaeva, E. A., Shimansky, V. V., Galeev, A. I., Zhuchkov, R. Ya., Irtuganov, E. N., Melnikov, S. S., Sakhibullin, N. A., Grebenev, S. A., Sharipova, L. M.

Publikováno v: Astronomy Letters, v. 43, no. 10, pp. 664-676 (2017)

We present the results of our long-term photometric and spectroscopic observations at the Russian-Turkish RTT-150 telescope for the optical counterpart to one of the best-known sources, representatives of the class of fast X-ray transients, IGR J1754

Externí odkaz: http://arxiv.org/abs/1710.04466

The astrometric Gaia-FUN-SSO observation campaign of 99 942 Apophis

Autor: Thuillot, W., Bancelin, D., Ivantsov, A., Desmars, J., Assafin, M., Eggl, S., Hestroffer, D., Rocher, P., Carry, B., David, P., Abe, L., Andreev, M., Arlot, J. -E., Asami, A., Ayvasian, V., Baransky, A., Belcheva, M., Bendjoya, Ph., Bikmaev, I., Burkhonov, O. A., Camci, U., Carbognani, A., Colas, F., Devyatkin, A. V., Ehgamberdiev, Sh. A., Enikova, P., Eyer, L., Galeev, A., Gerlach, E., Godunova, V., Golubaev, A. V., Gorshanov, D. L., Gumerov, R., Hashimoto, N., Helvaci, M., Ibryamov, S., Inasaridze, R. Ya., Khamitov, I., Kostov, A., Kozhukhov, A. M., Kozyryev, Y., Krugly, Yu. N., Kryuchkovskiy, V., Kulichenko, N., Maigurova, N., Manilla-Robles, A., Martyusheva, A. A., Molotov, I. E., Nikolov, G., Nikolov, P., Nishiyama, K., Okumura, S., Palaversa, L., Parmonov, O., Peng, Q. Y., Petrova, S. N., Pinigin, G. I., Pomazan, A., Rivet, J. -P., Sakamoto, T., Sakhibullin, N., Sergeev, O., Sergeyev, A. V., Shulga, O. V., Suarez, O., Sybiryakova, Y., Takahashi, N., Tarady, V., Todd, M., Urakawa, S., Uysal, O., Vaduvescu, O., Vovk, V., Zhang, X. -L.

Astrometric observations performed by the Gaia Follow-Up Network for Solar System Objects (Gaia-FUN-SSO) play a key role in ensuring that moving objects first detected by ESA's Gaia mission remain recoverable after their discovery. An observation cam

Externí odkaz: http://arxiv.org/abs/1510.00509