The eROSITA X-ray telescope on SRG

Predehl P, Andritschke R, Arefiev V, Babyshkin V, Batanov O, Becker W, Böhringer H, Bogomolov A, Boller T, Borm K, Bornemann W, Bräuninger H, Brüggen M, Brunner H, Brusa M, Bulbul E, Buntov M, Burwitz V, Burkert W, Clerc N, Churazov E, Coutinho D, Dauser T, Dennerl K, Doroshenko V, Eder J, Emberger V, Eraerds T, Finoguenov A, Freyberg M, Friedrich P, Friedrich S, Fürmetz M, Georgakakis A, Gilfanov M, Granato S, Grossberger C, Gueguen A, Gureev P, Haberl F, Hälker O, Hartner G, Hasinger G, Huber H, Ji L, Kienlin AV, Kink W, Korotkov F, Kreykenbohm I, Lamer G, Lomakin I, Lapshov I, Liu T, Maitra C, Meidinger N, Menz B, Merloni A, Mernik T, Mican B, Mohr J, Müller S, Nandra K, Nazarov V, Pacaud F, Pavlinsky M, Perinati E, Pfeffermann E, Pietschner D, Ramos-Ceja ME, Rau A, Reiffers J, Reiprich TH, Robrade J, Salvato M, Sanders J, Santangelo A, Sasaki M, Scheuerle H, Schmid C, Schmitt J, Schwope A, Shirshakov A, Steinmetz M, Stewart I, Strüder L, Sunyaev R, Tenzer C, Tiedemann L, Trümper J, Voron V, Weber P, Wilms J, Yaroshenko V (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 647

Article Number: A1

DOI: 10.1051/0004-6361/202039313

Abstract

eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully launched on July 13, 2019, from the Baikonour cosmodrome. After the commissioning of the instrument and a subsequent calibration and performance verification phase, eROSITA started a survey of the entire sky on December 13, 2019. By the end of 2023, eight complete scans of the celestial sphere will have been performed, each lasting six months. At the end of this program, the eROSITA all-sky survey in the soft X-ray band (0.2-2.3 keV) will be about 25 times more sensitive than the ROSAT All-Sky Survey, while in the hard band (2.3-8 keV) it will provide the first ever true imaging survey of the sky. The eROSITA design driving science is the detection of large samples of galaxy clusters up to redshifts z > 1 in order to study the large-scale structure of the universe and test cosmological models including Dark Energy. In addition, eROSITA is expected to yield a sample of a few million AGNs, including obscured objects, revolutionizing our view of the evolution of supermassive black holes. The survey will also provide new insights into a wide range of astrophysical phenomena, including X-ray binaries, active stars, and diffuse emission within the Galaxy. Results from early observations, some of which are presented here, confirm that the performance of the instrument is able to fulfil its scientific promise. With this paper, we aim to give a concise description of the instrument, its performance as measured on ground, its operation in space, and also the first results from in-orbit measurements.

Authors with CRIS profile

Involved external institutions

Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics Germany (DE) Russian Space Research Institute / Институт космических исследований Российской академии наук (IKI RAN) Russian Federation (RU) Eberhard Karls Universität Tübingen Germany (DE) European Space Astronomy Centre (ESAC) Spain (ES) Leibniz Institute for Astrophysics Potsdam / Leibniz-Institut für Astrophysik Potsdam Germany (DE) Rheinische Friedrich-Wilhelms-Universität Bonn Germany (DE) University of Bologna / Università di Bologna Italy (IT) NPO Lavochkin / НПО Лавочкина Russian Federation (RU) Universität Hamburg (UHH) Germany (DE) National Observatory of Athens (NOA) Greece (GR) Université Toulouse III - Paul Sabatier France (FR) Ludwig-Maximilians-Universität (LMU) Germany (DE) Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center Germany (DE) Roscosmos State Corporation for Space Activities / Государственная корпорация по космической деятельности / Роскосмос Russian Federation (RU)

How to cite

APA:

Predehl, P., Andritschke, R., Arefiev, V., Babyshkin, V., Batanov, O., Becker, W.,... Yaroshenko, V. (2021). The eROSITA X-ray telescope on SRG. Astronomy & Astrophysics, 647. https://dx.doi.org/10.1051/0004-6361/202039313

MLA:

Predehl, P., et al. "The eROSITA X-ray telescope on SRG." Astronomy & Astrophysics 647 (2021).

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