A5083219213- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Calibration and Measurement Techniques
- Scientific Research and Discoveries
- Adaptive optics and wavefront sensing
Nanjing University
2023-2024
Clemson University
2021
Abstract We present a systematic study of the putative hot gas corona around late-type galaxies (LTGs) residing in Virgo cluster, based on archival Chandra observations. Our sample consists 21 nearly edge-on representing range star formation rate (SFR) 0.2–3 M ⊙ yr −1 and stellar mass ( * ) (0.2–10) × 10 , majority which have not been explored with high-sensitivity X-ray observations so far. Significant extraplanar diffuse (0.5–2 keV) emission is detected only three LTGs, are also highest...
The obscuration observed in active galactic nuclei (AGNs) is mainly caused by dust and gas distributed a torus-like structure surrounding the supermassive black hole. However, properties of obscuring torus an AGN X-ray have not yet been fully investigated because lack high-quality data proper models. In this work, we perform broadband spectral analysis large, unbiased sample obscured AGNs (with line-of-sight column density 23 ≤ log( N H ) 24) nearby Universe for which archival NuSTAR are...
We present the analysis of 15 X-ray observations Mrk 477, a nearby Seyfert 2 active galactic nucleus, with objective to monitor its obscuring column density variability. The full dataset consists five archival observations, split into two XMM-Newton, NuSTAR and one Chandra observation, plus dedicated monitoring campaigns. campaigns were performed Swift-XRT NuSTAR, containing each. simultaneous using self-consistent torus models, deriving geometric properties as well obscuration along line...
Abstract We present a uniform and sensitive X-ray census of active galactic nuclei (AGNs) in the two nearest galaxy clusters, Virgo Fornax, utilizing newly released source catalogs from first all-sky scan Spectrum-Roentgen-Gamma/eROSITA. A total 50 10 sources are found positionally coincident with member galaxies respectively, down to 0.2–2.3 keV luminosity ∼10 39 erg s −1 reaching out projected distance well beyond virial radius both clusters. The majority nuclear identified. There is weak...
Abstract To understand the formation and growth of supermassive black holes (SMBHs) their coevolution with host galaxies, it is essential to know impact environment on activity active galactic nuclei (AGNs). We present new Chandra X-ray observations nuclear emission from member galaxies in Antlia cluster, nearest non-cool core merging galaxy residing at D = 35.2 Mpc. Its inner region, centered two dominant NGC 3268 3258, has been mapped three deep ACIS-I pointings. Nuclear sources are...
We present a uniform and sensitive X-ray census of active galactic nuclei (AGNs) in the two nearest galaxy clusters, Virgo Fornax, utilizing newly released source catalogs from first all-sky scan SRG/eROSITA. A total 50 10 sources are found positionally coincident with member galaxies respectively, down to 0.2--2.3 keV luminosity $\sim10^{39}\rm~erg~s^{-1}$ reaching out projected distance well beyond virial radius both clusters. The majority nuclear identified. There is weak evidence that...
We present a systematic search for extraplanar X-ray point sources around 19 late-type, highly inclined disk galaxies residing in the Virgo cluster, based on archival Chandra observations reaching source detection sensitivity of $L\rm(0.5- 8~keV)\sim10^{38}\rm~erg~s^{-1}$. Based cumulative surface density distribution as function projected vertical distance from mid-plane, we identify statistically significant ($\sim3.3\sigma$) excess $\sim20$ within off-disk $0.92'-2.5'$ ($\sim4.4-12\...
Abstract We present a systematic search for extraplanar X-ray point sources around 19 late-type, highly inclined disk galaxies residing in the Virgo cluster, based on archival Chandra observations reaching source detection sensitivity of L (0.5–8 keV) ∼ 10 38 erg s −1 . Based cumulative surface density distribution as function projected vertical distance from midplane, we identify statistically significant (∼3.3 σ ) excess ∼20 within off-disk <mml:math...
To understand the formation and growth of supermassive black holes (SMBHs) their co-evolution with host galaxies, it is essential to know impact environment on activity active galactic nuclei (AGN). We present new Chandra X-ray observations nuclear emission from member galaxies in Antlia cluster, nearest non-cool core merging galaxy residing at D = 35.2 Mpc. Its inner region, centered two dominant NGC 3268 3258, has been mapped three deep ACIS-I pointings. Nuclear sources are detected 7/84...
We present a systematic study of the putative hot gas corona around late-type galaxies (LTGs) residing in Virgo cluster, based on archival Chandra observations. Our sample consists 21 nearly edge-on representing star formation rate (SFR) range ($0.2-3\rm~M_\odot~yr^{-1}$) stellar mass ($M_*$) $(0.2-10) \times 10^{10}\rm~M_{\odot}$, majority which have not been explored with high-sensitivity X-ray observations so far. Significant extraplanar diffuse (0.5-2 keV) emission is detected only three...