Zobrazeno 1 - 10
of 11 058
pro vyhledávání: '"broad-line region"'
Models of active galactic nuclei often invoke a close physical association between the broad-line region and the accretion disk. We evaluate this theoretical expectation by investigating the relationship between the inclination angle of the BLR ($\th
Externí odkaz:
http://arxiv.org/abs/2412.09451
Autor:
Figaredo, Catalina Sobrino, Chelouche, Doron, Haas, Martin, Ramolla, Michael, Kaspi, Shai, Panda, Swayamtrupta, Ochmann, Martin W., Zucker, Shay, Chini, Rolf, Probst, Malte A., Kollatschny, Wolfram, Murphy, Miguel
We present the results of a nearly decade-long photometric reverberation mapping (PRM) survey of the H$\alpha$ emission line in nearby ($0.01\lesssim z \lesssim0.05$) Seyfert-Galaxies using small ($15\,\mathrm{cm}-40\,\mathrm{cm}$) telescopes. Broad-
Externí odkaz:
http://arxiv.org/abs/2411.07847
Autor:
Floris, Alberto, Pandey, Ashwani, Czerny, Bozena, Aldama, Mary Loli Martinez, Panda, Swayamtrupta, Marziani, Paola, Prince, Raj
Contamination from singly ionized iron emission is one of the greatest obstacles to determining the intensity of emission lines in the UV and optical wavelength ranges. This study presents a comprehensive analysis of the FeII emission in the bright q
Externí odkaz:
http://arxiv.org/abs/2408.17323
Autor:
Yao, Zhu-Heng, Yang, Sen, Guo, Wei-Jian, Chen, Yong-Jie, Songsheng, Yu-Yang, Bao, Dong-Wei, Jiang, Bo-Wei, Wang, Yi-Lin, Zhang, Hao, Hu, Chen, Li, Yan-Rong, Du, Pu, Xiao, Ming, Bai, Jin-Ming, Ho, Luis C., Brotherton, Michael S., Aceituno, Jesús, Winkler, Hartmut, Wang, Jian-Min
Over the past three decades, multiple reverberation mapping (RM) campaigns conducted for the quasar PG 2130+099 have exhibited inconsistent findings with time delays ranging from $\sim$10 to $\sim$200 days. To achieve a comprehensive understanding of
Externí odkaz:
http://arxiv.org/abs/2408.17407
Autor:
Chen, Sina, Laor, Ari, Behar, Ehud, Baldi, Ranieri D., Gelfand, Joseph D., Kimball, Amy E., McHardy, Ian M., Orosz, Gabor, Paragi, Zsolt
Does a broad-line region (BLR) wind in radio-quiet (RQ) active galactic nuclei (AGN) extend to pc scales and produce radio emission? We explore the correlations between a pc-scale radio wind and the BLR wind in a sample of 19 RQ Palomar-Green (PG) qu
Externí odkaz:
http://arxiv.org/abs/2408.15934
Autor:
XRISM Collaboration
We present an analysis of the first two XRISM/Resolve spectra of the well-known Seyfert-1.5 active galactic nucleus in NGC 4151, obtained in December 2023. Our work focuses on the nature of the narrow Fe K$_{\alpha}$ emission line at 6.4 keV, the str
Externí odkaz:
http://arxiv.org/abs/2408.14300
Autor:
Fries, Logan B., Trump, Jonathan R., Horne, Keith, Davis, Megan C., Grier, Catherine J., Shen, Yue, Anderson, Scott F., Dwelly, Tom, Homayouni, Y., Morrison, Sean, Runnoe, Jessie C., Trakhtenbrot, Benny, Assef, Roberto J., Bizyaev, Dmitry, Brandt, W. N., Breiding, Peter, Browstein, Joel, Chakraborty, Priyanka, Hall, P. B., Koekemoer, Anton M., Ibarra-Medel, Héctor J., Martínez-Aldama, Mary Loli, Negrete, C. Alenka, Pan, Kaike, Ricci, Claudio, Scheider, Donald P., Sharp, Hugh W., Smith, Theodore B., Stone, Zachary, Temple, Matthew J.
We present a velocity-resolved reverberation mapping analysis of the hypervariable quasar RM160 (SDSS J141041.25+531849.0) at z = 0.359 with 153 spectroscopic epochs of data representing a ten-year baseline (2013-2023). We split the baseline into two
Externí odkaz:
http://arxiv.org/abs/2409.12229
Autor:
Li, Yan-Rong, Hu, Chen, Yao, Zhu-Heng, Chen, Yong-Jie, Bai, Hua-Rui, Yang, Sen, Du, Pu, Fang, Feng-Na, Fu, Yi-Xin, Liu, Jun-Rong, Peng, Yue-Chang, Songsheng, Yu-Yang, Wang, Yi-Lin, Xiao, Ming, Zhai, Shuo, Winkler, Hartmut, Bai, Jin-Ming, Ho, Luis C., Petrov, Romain G., Aceituno, Jesus, Wang, Jian-Min
We conduct a reverberation mapping (RM) campaign to spectroscopically monitor a sample of selected bright active galactic nuclei with large anticipated broad-line region (BLR) sizes adequate for spectroastrometric observations by the GRAVITY instrume
Externí odkaz:
http://arxiv.org/abs/2407.08120
Autor:
Li, Sha-Sha, Feng, Hai-Cheng, Liu, H. T., Bai, J. M., Ji, Xiang, Cheng, Cheng, Lu, Kai-Xing, Wang, Jian-Guo, Li, Rui
Publikováno v:
ApJ, 972, 105 (2024)
Broad emission lines of active galactic nuclei (AGNs) originate from the broad-line region (BLR), consisting of dense gas clouds in orbit around an accreting supermassive black hole. Understanding the geometry and kinematics of the region is crucial
Externí odkaz:
http://arxiv.org/abs/2407.05414
Autor:
Wu, Qiaoya, Shen, Yue, Guo, Hengxiao, Anderson, Scott F., Brandt, W. N., Grier, Catherine J., Hall, Patrick B., Ho, Luis C., Homayouni, Yasaman, Horne, Keith, Li, Jennifer I-Hsiu, Schneider, Donald P.
Over three decades of reverberation mapping (RM) studies on local broad-line active galactic nuclei (AGNs) have measured reliable black-hole (BH) masses for $> 100$ AGNs. These RM measurements reveal a significant correlation between the Balmer broad
Externí odkaz:
http://arxiv.org/abs/2407.01737