Zobrazeno 1 - 10
of 91
pro vyhledávání: '"supermassive black holes [quasars]"'
Autor:
P Wiseman, Y Wang, S Hönig, N Castro-Segura, P Clark, C Frohmaier, M D Fulton, G Leloudas, M Middleton, T E Müller-Bravo, A Mummery, M Pursiainen, S J Smartt, K Smith, M Sullivan, J P Anderson, J A Acosta Pulido, P Charalampopoulos, M Banerji, M Dennefeld, L Galbany, M Gromadzki, C P Gutiérrez, N Ihanec, E Kankare, A Lawrence, B Mockler, T Moore, M Nicholl, F Onori, T Petrushevska, F Ragosta, S Rest, M Smith, T Wevers, R Carini, T-W Chen, K Chambers, H Gao, M Huber, C Inserra, E Magnier, L Makrygianni, M Toy, F Vincentelli, D R Young
Publikováno v:
Wiseman, P, Wang, Y, Honig, S, Castro-Segura, N, Clark, P, Frohmaier, C, Fulton, M D, Leloudas, G, Middleton, M, Muller-Bravo, T E, Mummery, A, Pursiainen, M, Smartt, S J, Smith, K, Sullivan, M, Anderson, J P, Acosta Pulido, J A, Charalampopoulos, P, Banerji, M, Dennefeld, M, Galbany, L, Gromadzki, M, Gutierrez, C P, Ihanec, N, Kankare, E, Lawrence, A, Mockler, B, Moore, T, Nicholl, M, Onori, F, Petrushevska, T, Ragosta, F, Rest, S, Smith, M, Wevers, T, Carini, R, Chen, T W, Chambers, K, Gao, H, Huber, M, Inserra, C, Magnier, E, Makrygianni, L, Toy, M, Vincentelli, F & Young, D R 2023, ' Multiwavelength observations of the extraordinary accretion event AT2021lwx ', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 3, pp. 3992-4002 . https://doi.org/10.1093/mnras/stad1000
Wiseman, P, Wang, Y, Hönig, S, Castro-Segura, N, Clark, P, Frohmaier, C, Fulton, M D, Leloudas, G, Middleton, M, Müller-Bravo, T E, Mummery, A, Pursiainen, M, Smartt, S J, Smith, K, Sullivan, M, Anderson, J P, Pulido, J A A, Charalampopoulos, P, Banerji, M, Dennefeld, M, Galbany, L, Gromadzki, M, Gutiérrez, C P, Ihanec, N, Kankare, E, Lawrence, A, Mockler, B, Moore, T, Nicholl, M, Onori, F, Petrushevska, T, Ragosta, F, Rest, S, Smith, M, Wevers, T, Carini, R, Chen, T-W, Chambers, K, Gao, H, Huber, M, Inserra, C, Magnier, E, Makrygianni, L, Toy, M, Vincentelli, F & Young, D R 2023, ' Multiwavelength observations of the extraordinary accretion event AT2021lwx ', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 3, 3992–4002 . https://doi.org/10.1093/mnras/stad1000
Wiseman, P, Wang, Y, Hönig, S, Castro-Segura, N, Clark, P, Frohmaier, C, Fulton, M D, Leloudas, G, Middleton, M, Müller-Bravo, T E, Mummery, A, Pursiainen, M, Smartt, S J, Smith, K, Sullivan, M, Anderson, J P, Pulido, J A A, Charalampopoulos, P, Banerji, M, Dennefeld, M, Galbany, L, Gromadzki, M, Gutiérrez, C P, Ihanec, N, Kankare, E, Lawrence, A, Mockler, B, Moore, T, Nicholl, M, Onori, F, Petrushevska, T, Ragosta, F, Rest, S, Smith, M, Wevers, T, Carini, R, Chen, T-W, Chambers, K, Gao, H, Huber, M, Inserra, C, Magnier, E, Makrygianni, L, Toy, M, Vincentelli, F & Young, D R 2023, ' Multiwavelength observations of the extraordinary accretion event AT2021lwx ', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 3, 3992–4002 . https://doi.org/10.1093/mnras/stad1000
We present observations from X-ray to mid-infrared wavelengths of the most energetic non-quasar transient ever observed, AT2021lwx. Our data show a single optical brightening by a factor $>100$ to a luminosity of $7\times10^{45}$ erg s$^{-1}$, and a
Autor:
Mauri J Valtonen, Staszek Zola, A Gopakumar, Anne Lähteenmäki, Merja Tornikoski, Lankeswar Dey, Alok C Gupta, Tapio Pursimo, Emil Knudstrup, Jose L Gomez, Rene Hudec, Martin Jelínek, Jan Štrobl, Andrei V Berdyugin, Stefano Ciprini, Daniel E Reichart, Vladimir V Kouprianov, Katsura Matsumoto, Marek Drozdz, Markus Mugrauer, Alberto Sadun, Michal Zejmo, Aimo Sillanpää, Harry J Lehto, Kari Nilsson, Ryo Imazawa, Makoto Uemura
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:6143-6155
Publisher Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a seco
Publikováno v:
Barlow-Hall, C L, Delaney, J, Aird, J, Evans, P A, Osborne, J P & Watson, M G 2023, ' Constraints on the X-ray luminosity function of AGN at z = 5.7–6.4 with the Extragalactic Serendipitous Swift Survey ', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 4, pp. 6055-6064 . https://doi.org/10.1093/mnras/stad100
X-ray luminosity functions (XLFs) of Active Galactic Nuclei (AGN) trace the growth and evolution of supermassive black hole populations across cosmic time, however, current XLF models are poorly constrained at redshifts of z>6, with a lack of spectro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66d679b9d8c87d3ab0ea6b0d918dee10
https://hdl.handle.net/20.500.11820/9e301517-7154-4551-98e9-f0e04e0d7187
https://hdl.handle.net/20.500.11820/9e301517-7154-4551-98e9-f0e04e0d7187
We propose a solution to the problem of accretion disc sizes in active galactic nuclei being larger when measured by reverberation mapping than predicted by theory. Considering blackbody reprocessing on a disc with thickness profile $H(r)$, our solut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be30511bd93522820e0487d7f680546d
https://hdl.handle.net/10023/26707
https://hdl.handle.net/10023/26707
Autor:
Joseph A. Muñoz, J. Jiménez-Vicente, Carina Fian, D. Chelouche, E. Mediavilla, Veronica Motta, Arnold Hanslmeier
Aims. We intend to use the impact of microlensing on the Fe III lambda lambda 2039 2113 emission line blend along with a measure of its gravitational redshift to estimate the mass of the quasar's central supermassive black hole (SMBH). Methods. We fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a20c04a21e31b2f98fbfd3ee43fdfaa0
https://hdl.handle.net/10481/78228
https://hdl.handle.net/10481/78228
Autor:
Wu, Jin, Shen, Yue, Jiang, Linhua, Banados, Eduardo, Fan, Xiaohui, Ho, Luis C., Vestergaard, Marianne, Wang, Feige, Wang, Shu, Wu, Xue-Bing, Yang, Jinyi
Publikováno v:
Wu, J, Shen, Y, Jiang, L, Banados, E, Fan, X, Ho, L C, Vestergaard, M, Wang, F, Wang, S, Wu, X-B & Yang, J 2022, ' Demographics of z similar to 6 quasars in the black hole mass-luminosity plane ', Monthly Notices of the Royal Astronomical Society, vol. 517, no. 2, pp. 2659-2676 . https://doi.org/10.1093/mnras/stac2833
We study the demographics of z similar to 6 broad-line quasars in the black hole (BH) mass-luminosity plane using a sample of more than 100 quasars at 5.7 < z < 6.5. These quasars have well-quantified selection functions and nearly one-third of them
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2751::4e8c0c34f38b874e3326cad69bce5bcc
https://curis.ku.dk/portal/da/publications/demographics-of-z-similar-to-6-quasars-in-the-black-hole-massluminosity-plane(8be65d16-88c3-4e09-8307-d0c18b326e74).html
https://curis.ku.dk/portal/da/publications/demographics-of-z-similar-to-6-quasars-in-the-black-hole-massluminosity-plane(8be65d16-88c3-4e09-8307-d0c18b326e74).html
Publikováno v:
McGrath, C, D'Orazio, D J & Creighton, J 2022, ' Measuring the Hubble constant with double gravitational wave sources in pulsar timing ', Monthly Notices of the Royal Astronomical Society, vol. 517, no. 1, pp. 1242-1263 . https://doi.org/10.1093/mnras/stac2593
Pulsar timing arrays (PTAs) are searching for gravitational waves from supermassive black hole binaries (SMBHBs). Here we show how future PTAs could use a detection of gravitational waves from individually resolved SMBHB sources to produce a purely g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::928b9fba0297332458ed5cb5cbf94a08
http://arxiv.org/abs/2208.06495
http://arxiv.org/abs/2208.06495
Autor:
Sebastian Rabien, Stefano Ciroi, S. Komossa, Marco Berton, Emilia Järvelä, Iskren Y. Georgiev, Sonia Antón, L. Busoni, Smita Mathur, Alessandro Caccianiga, Timothy S. Hamilton, Wolfgang Gässler
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:5188-5198
The gamma-ray emitting galaxy SBS 0846+513 has been classified as a Narrow-Line Seyfert 1 from its spectroscopy, and on that basis it was thought likely to have a small central black hole hosted in a spiral galaxy. But very few of the gamma-ray Narro
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Autor:
M. Singha, B. Husemann, T. Urrutia, C. P. O’Dea, J. Scharwächter, M. Gaspari, F. Combes, R. Nevin, B. A. Terrazas, M. Pérez-Torres, T. Rose, T. A. Davis, G. R. Tremblay, J. Neumann, I. Smirnova-Pinchukova, S. A. Baum
Publikováno v:
Astronomy & astrophysics, 2022, Vol.659, pp.A123 [Peer Reviewed Journal]
Digital.CSIC. Repositorio Institucional del CSIC
instname
Digital.CSIC. Repositorio Institucional del CSIC
instname
Context. The strong asymmetry in the optical [O III] λ5007 emission line is one of the best signatures of active galactic nuclei (AGN) driven warm (∼104 K) ionized gas outflows on host galaxy scales. While large spectroscopic surveys such as the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ceb2e7e707b9820112efa74ad75008d
https://doi.org/10.1051/0004-6361/202040122
https://doi.org/10.1051/0004-6361/202040122