2021-W25-eFEDS

# eRosita Final Equatorial Depth Survey (eFEDS) catalog series
- https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/
- 2106.14517-14527
- The eROSITA team just released its eFEDS catalogue. It consists of two parts, one with 27910 X-ray sources detected in 0.2-2.3 keV band, the other hard band catalogue includes 246 sources @ 2.3-5.0 keV. eFEDS, which covers 140 deg^2, is part of the 4-year all-sky canning operation. The data includes 4-day observation from 2019.11.3-2019.11.6, with average observing depth of 2.2 ks. As mentioned in the article, a supercluster is newly found in this data.
- by **胡祯崧**

# 2106.14530
- https://arxiv.org/abs/2106.14530 
- **First studies of the diffuse X-ray emission in the Large Magellanic Cloud with eROSITA**
- The authors analyze the eROSITA observations of LMC to study the hot-phase ISM. They found:
    - The diffuse X-ray emission has a thermal component with T~0.2 keV and an additional T~0.7 keV thermal component with a much lower surface brightness.
    - Column density NH derived from hot-phase gas is consistent with that from cold medium.
    - Neon abundance is enhanced towards superbubble 30 Dor and SN 1987A
    - Two bright extened X-ray sources with NIE and non-thermal spectra coincide with a stellar cluster and WR star system.
    - An optical SNR candidate J0529-7004 is confirmed from its thermal X-ray emission.
- by 方正
    
# 2106.14531
- https://arxiv.org/abs/2106.14531
- **eROSITA X-ray scan of the eta Chamaeleontis cluster**

# 2106.14532
- https://arxiv.org/abs/2106.14532
-**SN 1987A : Tracing the flux decline and spectral evolution through a comparison of SRG/eROSITA and XMM-Newton observations**

# 2106.14535
- https://arxiv.org/abs/2106.14535
- **EROSITA study of the 47~Tucanae globular cluster**
- by **苏钊**

# 2106.14533
- https://arxiv.org/abs/2106.14533
- **Phase-resolved X-ray spectroscopy of PSR B0656+14 with SRG/eROSITA and XMM-Newton**

# 2106.14544
- https://arxiv.org/abs/2106.14544
- **eROSITA Spectro-Imaging Analysis of the Abell 3408 Galaxy Cluster**
- The new generation X-ray telescope eROSITA performed the first X-ray observation of galaxy cluster Abell 3408 in recent 20 years. This nearby (z~0.04) cluster has a neighbouring cluster A3407 which is very close (projection distance ~ 1.7 Mpc). The authors find that the cluster has a strong elongation in SE-NW direction and a gas temperature kT500 = 2.23±0.09 keV. From the ellipitcial morphology and the temperature distribution, the authors claim that these two clusters are in a pre-merger state with some interactions already begun.
- by: 华子乾

# 2106.14534
- https://arxiv.org/abs/2106.14534
- **Studying the merging cluster Abell 3266 with eROSITA**

# 2106.14536
- https://arxiv.org/abs/2106.14536
- **SRG/eROSITA discovery of 164 s pulsations from the SMC Be/X-ray binary XMMU J010429.4-723136**

# 2106.14537
- https://arxiv.org/abs/2106.14537
- **Simultaneous eROSITA and TESS observations of the ultra-active star AB~Doradus**

# 2106.14538
- https://arxiv.org/abs/2106.14538
- **Identification of SRGt 062340.2-265715 as a bright, strongly variable, novalike cataclysmic variable**

# 2106.14539
- https://arxiv.org/abs/2106.14539
- **SRGA J124404.1-632232/SRGU J124403.8-632231: a new X-ray pulsar discovered in the all-sky survey by SRG**

# 2106.14540
- https://arxiv.org/abs/2106.14540
- **Discovery of eRASSt J192932.9-560346: a bright, two-pole accreting, eclipsing polar**

# 2106.14541
- https://arxiv.org/abs/2106.14541
- **eROSITA detection of flares from the Be/X-ray binary A0538-66**

# 2106.14542
- https://arxiv.org/abs/2106.14542
- **The eROSITA view of the Abell 3391/95 field: a case study from the Magneticum cosmological simulation**

# 2106.14543
- https://arxiv.org/abs/2106.14543
- The eROSITA View of the Abell 3391/95 Field: The Northern Clump -- The Largest Infalling Structure in the Longest Known Gas Filament Observed with eROSITA, XMM-Newton, Chandra

# 2106.14545
- https://arxiv.org/abs/2106.14545
- **X-Ray Studies of the Abell 3158 Galaxy Cluster with eROSITA**

# 2106.14546
- https://arxiv.org/abs/2106.14546
- **The corona -- chromosphere connection studied with simultaneous eROSITA and TIGRE observations**

# 2106.14547
- https://arxiv.org/abs/2106.14547 
- **A first eROSITA view of ultracool dwarfs**

# 2106.14548
- https://arxiv.org/abs/2106.14548
- **First eROSITA study of nearby M dwarfs and the rotation-activity relation in combination with TESS**

# 2106.14549
- https://arxiv.org/abs/2106.14549
- **X-raying the Sco-Cen OB association: The low-mass stellar population revealed by eROSITA**

# 2106.14550
- https://arxiv.org/abs/2106.14550
- **Exoplanet X-ray irradiation and evaporation rates with eROSITA**

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# 2106.09454
- https://arxiv.org/abs/2106.09454
- **SRG/eROSITA discovery of a large circular SNR candidate G116.6-26.1: SN Ia explosion probing the gas of the Milky Way halo?**
- They discovered an SNR candidate G116.6-26.1 with high latitude and large angular extent. They propose that this object originated from a Type Ia supernova which exploded some 40000 yr ago in the low density (~0.001 cm^−3) and hot (~ (1 − 2) × 10^6 K) gas of the Milky Way halo at a distance of ~3 kpc from the Sun. This is a rare high-latitude SNR, which can help us understand the SNR evolution in halo and its surrounding environment.
- by 张孟飞

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