Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Li, Ruancun"'
Autor:
Yao, Yuhan, Guolo, Muryel, Tombesi, Francesco, Li, Ruancun, Gezari, Suvi, García, Javier A., Dai, Lixin, Chornock, Ryan, Lu, Wenbin, Kulkarni, S. R., Gendreau, Keith C., Pasham, Dheeraj R., Cenko, S. Bradley, Kara, Erin, Margutti, Raffaella, Ajay, Yukta, Wevers, Thomas, Kwan, Tom M., Andreoni, Igor, Bloom, Joshua S., Drake, Andrew J., Graham, Matthew J., Hammerstein, Erica, Laher, Russ R., LeBaron, Natalie, Mahabal, Ashish A., O'Connor, Brendan, Purdum, Josiah, Ravi, Vikram, Sears, Huei, Sharma, Yashvi, Smith, Roger, Sollerman, Jesper, Somalwar, Jean J., Wold, Avery
We present the tidal disruption event (TDE) AT2022lri, hosted in a nearby ($\approx\!144$ Mpc) quiescent galaxy with a low-mass massive black hole ($10^4\,M_\odot < M_{\rm BH} < 10^6\,M_\odot$). AT2022lri belongs to the TDE-H+He subtype. More than 1
Externí odkaz:
http://arxiv.org/abs/2405.11343
The inclination angle of substructures in active galaxies gives insights into physical components from scales of the vicinity of the central black hole to the entire host galaxy. We use the self-consistent reflection spectral model \textsc{RELXILL} t
Externí odkaz:
http://arxiv.org/abs/2401.16665
Autor:
Kawamuro, Taiki, Ricci, Claudio, Yamada, Satoshi, Noda, Hirofumi, Li, Ruancun, Temple, Matthew J., Tortosa, Alessia
The nearby dwarf galaxy POX 52 at $z = 0.021$ hosts an active galactic nucleus (AGN) with a black-hole (BH) mass of $M_{\rm BH} \sim 10^{5-6} M_\odot$ and an Eddington ratio of $\sim$ 0.1-1. This object provides the rare opportunity to study both AGN
Externí odkaz:
http://arxiv.org/abs/2310.20137
Publikováno v:
2023ApJS..267...17L
The broadband spectral energy distribution of a galaxy encodes valuable information on its stellar mass, star formation rate (SFR), dust content, and possible fractional energy contribution from nonstellar sources. We present a comprehensive catalog
Externí odkaz:
http://arxiv.org/abs/2307.13461
Autor:
Hou, Meicun, Li, Zhiyuan, Liu, Xin, Li, Zongnan, Li, Ruancun, Wang, Ran, Wang, Jing, Ho, Luis C.
Publikováno v:
ApJ, 943, 50 (2023)
Dual active galactic nuclei (AGN), which are the manifestation of two actively accreting supermassive black holes (SMBHs) hosted by a pair of merging galaxies, are a unique laboratory for studying the physics of SMBH feeding and feedback during an in
Externí odkaz:
http://arxiv.org/abs/2212.06399
Autor:
Tortosa, Alessia, Ricci, Claudio, Ho, Luis C., Tombesi, Francesco, Du, Pu, Inayoshi, Kohei, Wang, Jian-Min, Shangguan, Jinyi, Li, Ruancun
We present the first systematic broad-band X-ray study of super-Eddington accretion onto SMBHs with simultaneous {\it NuSTAR} and {\it XMM-Newton} or {\it Swift}/XRT observations of a sample of 8 super-Eddington accreting AGN with Eddington ratio $1<
Externí odkaz:
http://arxiv.org/abs/2212.06183
Autor:
Li, Ruancun, Ho, Luis C., Ricci, Claudio, Trakhtenbrot, Benny, Arcavi, Iair, Kara, Erin, Hiramatsu, Daichi
Publikováno v:
2022, ApJ, 933, 70
Changing-look active galactic nuclei (AGNs) present an important laboratory to understand the origin and physical properties of the broad-line region (BLR). We investigate follow-up optical spectroscopy spanning $\sim 500$ days after the outburst of
Externí odkaz:
http://arxiv.org/abs/2208.01797
Autor:
Tortosa, Alessia, Ricci, Claudio, Tombesi, Francesco, Ho, Luis C., Du, Pu, Inayoshi, Kohei, Wang, Jian-Min, Shangguan, Jinyi, Li, Ruancun
The physical properties of the accretion flow and of the X-ray emitting plasma, in supermassive black holes accreting at extreme Eddington rates, are still very unclear. Here we present the analysis of simultaneous XMM-Newton and NuSTAR observations
Externí odkaz:
http://arxiv.org/abs/2109.02573
Autor:
Trakhtenbrot, Benny, Arcavi, Iair, MacLeod, Chelsea L., Ricci, Claudio, Kara, Erin, Graham, Melissa L., Stern, Daniel, Harrison, Fiona A., Burke, Jamison, Hiramatsu, Daichi, Hosseinzadeh, Griffin, Howell, D. Andrew, Smartt, Stephen J., Rest, Armin, Prieto, Jose L., Shappee, Benjamin J., Holoien, Thomas W. -S., Bersier, David, Filippenko, Alexei V., Brink, Thomas G., Zheng, WeiKang, Li, Ruancun, Remillard, Ronald A., Loewenstein, Michael
We study the sudden optical and ultraviolet (UV) brightening of 1ES 1927+654, which until now was known as a narrow-line active galactic nucleus (AGN). 1ES 1927+654 was part of the small and peculiar class of "true Type-2" AGN, which lack broad emiss
Externí odkaz:
http://arxiv.org/abs/1903.11084