The Little Southern Clump (LSC) was discovered by eROSITA using its PV data ofthe A3391/95 system. This clump resides in the newly detected filament, theSouthern Filament. The LSC shows a soft emission extent toward the northwest, inthe direction of the A3395 cluster. We notice a trail of galaxies in thenortheast direction, seemingly being accreted onto the clump itself, andco-spatial with an apparent X-ray surface brightness excess. We propose an 85 ksobservation to investigate the relationship between an accreted structure withits host filament in the cluster outskirt.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2023-02-18T10:01:08Z/2023-02-19T14:17:48Z
Version
20.09_20221024_1724
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Ms Angie Veronica, 2024, 'Study of the Little Southern Clump in the A3391/95 Southern Filament', 20.09_20221024_1724, European Space Agency, https://doi.org/10.57780/esa-78akgq5
