Details

Autor(en) / Beteiligte

• 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.

Titel

Observations of Massive Galaxy Clusters from the All-Sky Survey with the eROSITA Telescope Onboard the SRG Space Observatory

Ist Teil von

• Astronomy letters, 2022-12, Vol.48 (12), p.702-723

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2022

Quelle

SpringerNature Journals

Beschreibungen/Notizen

• 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 data from optical and infrared sky surveys. Optical observations of these clusters are carried out with the 6-m telescope at the Special Astrophysical Observatory of the Russian Academy of Sciences (BTA), the 2.5-m telescope at the Caucasus Mountain Observatory of the Sternberg Astronomical Institute of the Moscow State University (AZT-33IK), and the 1.5-m Russian–Turkish telescope (RTT-150). We provide data on the optical identifications and spectroscopic redshift measurements for 11 massive galaxy clusters with masses higher than located at redshifts – . Such clusters are very rare objects; most of the clusters with such a high mass in the observable Universe have already been detected previously by the Sunyaev–Zeldovich effect in the Planck all-sky survey. Being anomalous, they can be sensitive indicators of possible deviations of the cosmology from the standard model with a quasi-flat spectrum of initial Gaussian perturbations.