The cruise phase of SRG to L2 was used to verify that all eROSITA systems had survived launch and no degradation in the functionality was present. The critical one-time operations of opening the telescope cover and cooling the CCD detectors to -90°C were also carried out during this phase.
This talk presents an overview of the telescope operations during the commissioning phase that verified...
The power of eROSITA, the core instrument on the Russian-German SRG mission, is high sensitivity at high spectral, spatial, and temporal resolution over a large field of view. This is achieved by combining 7 coaligned fast X-ray optics, each composed of 54 mirror shells, to focus the X-rays onto a total of 1 million pixels, which can all be used as spectrographs. On their way to the CCDs, the...
We present results of extensive calibration program performed with ART-XC telescope during the first months of SRG operation. Performance of the ART-XC detectors was calibrated with use of onboard radioactive source while effective area and
point spread function were verified during observations of bright X-ray sources. The derived detector energy resolution of 9% at 14 keV is in good...
During each ground station contact of Spectrum X-Gamma, about once every 24h, eROSITA data are telemetered to ground and then immediately subjected to a quick scientific and engineering analysis - the Near Real Time Analysis. The purpose of the scientific analysis done by the NRTA is to identify new transient or strongly variable sources which were detected with eROSITA and to monitor sources...
The eROSITA Ground Segment team has developed a software package (eSASS - eROSITA Science Analysis Software System) for creating calibrated science data products and for performing various interactive data analysis tasks. The eSASS package builds on experience and in part on code from XMM-Newton and ROSAT, though with significant revisions and upgrades. eROSITA telemetry data received during...
The overview of SRG/ART-XC data reduction procedures and source detection algorithms will be presented. Efficiency of various source detection methods will be compared using the results of realistic SRG/ART-XC all sky survey simulations. The construction and properties of X-ray source catalogue, obtained from the first months of SRG/ART-XC all sky X-ray survey started on Dec 8, 2019 will be discussed.
We demonstrate here the timing capabilities of the ART-XC telescope
on the time scale from several milliseconds to few seconds. The work was done
based on the data of observations of several pulsars emitting in X-rays. The
observations were carried out during the in-flight Calibration and
the performance verification (PV) phases. Using these data we tested
the stability of the on-board clock...
We summarize the properties of the eROSITA camera background at L2,
as a function of camera, time, energy, position on detector,
position in orbit, etc.
The Astronomical Roentgen Telescope – X-ray Concentrator (ART-XC) is one of two X-ray telescopes onboard the SRG mission launched on July 13, 2019 from Baikonur. ART-XC consists of seven co-aligned mirror modules coupled with seven focal plane CdTe double-sided strip detectors. The ART-XC detectors operate in the energy range from 4 keV to over than 100 keV, while the effective area of the...
