15-20 March 2020
Garching
Europe/Berlin timezone

The ecliptic poles in the XMM-Newton slew survey: A deeper view from stacked source detection

Not scheduled
20m
Garching

Garching

Poster

Description

The XMM-Newton slew survey is performed with the EPIC/pn camera since early 2002 while slewing the telescope between targets. More than 85% of the sky have been observed meanwhile, part of it repeatedly. It is deepest around the ecliptic poles, where sky patches were covered between ten and thirty times. From the individual slew stripes, several thousand sources with fluxes down to about $10^{-12}$ erg cm$^{-2}$ s$^{-2}$ in the 0.2-12.0 keV band have been detected in these regions. Taking overlapping slews into account, the total exposure time increases from about 11s on-axis in a single slew to up to 3-4min per pixel.
To take advantage of their depth, we perform a combined analysis of the overlapping exposures around the ecliptic poles, aiming at a lower limiting sensitivity. It will deliver a large pool of XMM-Newton detections for comparisons with the eROSITA survey, where sensitivities of $2\times 10^{-14}-3\times 10^{-15}$ erg cm$^{-2}$ s$^{-2}$ in the pole regions are expected in eRASS1, and especially for long-term flux and variability studies.

Presenter status eROSITA consortium member

Primary author

Iris Traulsen (Leibniz-Institut für Astrophysik Potsdam (AIP))

Co-author

Axel Schwope (Leibniz-Institut für Astrophysik Potsdam (AIP))

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