Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Intermediate-mass black holes"'
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 2, p L31 (2024)
The origins and mergers of supermassive black holes (SMBHs) remain a mystery. We describe a scenario from a novel multiphysics simulation featuring rapid (≲1 Myr) hyper-Eddington gas capture by a ∼1000 M _⊙ “seed” black hole (BH) up to supe
Externí odkaz:
https://doaj.org/article/28ad5d842ca44c28970442b1a3105352
Publikováno v:
Universe, Vol 10, Iss 5, p 225 (2024)
This white paper explores the detectability of intermediate-mass black holes (IMBHs) wandering in the Milky Way (MW) and massive local galaxies, with a particular emphasis on the role of AXIS. IMBHs, ranging within 103−6M⊙, are commonly found at
Externí odkaz:
https://doaj.org/article/9f73c2b7cab74f12a4af9e55c76ecd90
Autor:
Shivangi Pandey, Suvendu Rakshit, Krishan Chand, C. S. Stalin, Hojin Cho, Jong-Hak Woo, Priyanka Jalan, Amit Kumar Mandal, Amitesh Omar, Jincen Jose, Archana Gupta
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 116 (2024)
Understanding the origins of massive black hole seeds and their coevolution with their host galaxy requires studying intermediate-mass black holes (IMBHs) and estimating their mass. However, measuring the masses of these IMBHs is challenging, due to
Externí odkaz:
https://doaj.org/article/355bb482ccbc4f38988faedaaf8ed15a
Autor:
Fazeel Mahmood Khan, Fiza Javed, Kelly Holley-Bockelmann, Lucio Mayer, Peter Berczik, Andrea V. Macciò
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 22 (2024)
Intermediate-mass black hole (IMBH) mergers with masses 10 ^4 –10 ^6 M _⊙ are expected to produce gravitational waves detectable by the Laser Interferometer Space Antenna (LISA) with high signal-to-noise ratios from the present day to cosmic dawn
Externí odkaz:
https://doaj.org/article/12d2809ccafa4a6ba24bce0f3ede998e
Autor:
S. Elaheh Hosseini, Andreas Eckart, Michal Zajaček, Silke Britzen, Harshitha K. Bhat, Vladimír Karas
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 261 (2024)
We focus on a sample of 42 sources in the vicinity of the bow-shock source IRS 1W (N-source region), located at a distance of 6.″05 northeast of the supermassive black hole Sagittarius A* (Sgr A*), within the radius of 1.″35. We present the first
Externí odkaz:
https://doaj.org/article/f8c6ae7c71a4410db5ca8927965f8ea5
Autor:
Peter G. Boorman, Daniel Stern, Roberto J. Assef, Abhijeet Borkar, Murray Brightman, Johannes Buchner, Chien-Ting Chen, Hannah P. Earnshaw, Fiona A. Harrison, Gabriele A. Matzeu, Ryan W. Pfeifle, Claudio Ricci, Jiří Svoboda, Núria Torres-Albà, Ingyin Zaw
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 230 (2024)
Recent models suggest approximately half of all accreting supermassive black holes (SMBHs; M _BH ≳ 10 ^5 M _⊙ ) are expected to undergo intense growth phases behind Compton-thick ( N _H > 1.5 × 10 ^24 cm ^−2 ) veils of obscuring gas. However,
Externí odkaz:
https://doaj.org/article/26b6e42f78434cc0886de80fee9ae245
Autor:
Wenwen Zuo, Hengxiao Guo, Jingbo Sun, Qi Yuan, Paulina Lira, Minfeng Gu, Philip G. Edwards, Alok C. Gupta, Shubham Kishore, Jamie Stevens, Tao An, Zhen-Yi Cai, Hai-Cheng Feng, Luis C. Ho, Dragana Ilić, Andjelka B. Kovačević, Sha-Sha Li, Mar Mezcua, Luka Č. Popović, Mouyuan Sun, Tushar Tripathi, Vivian U, Oliver Vince, Jianguo Wang, Junxian Wang, Shu Wang, Xuebing Wu, Zhenya Zheng
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 288 (2024)
To investigate the short-term variability and determine the size of the optical continuum emitting region of intermediate-mass black holes (IMBHs), we carried out high-cadence, multiband photometric monitoring of a Seyfert 1 galaxy J0249−0815 acros
Externí odkaz:
https://doaj.org/article/84f6e6d430d04084b24523678c74067a
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 260 (2024)
This study investigates the detectability of intermediate-mass black holes (IMBHs) within the mass range 10 ^2 M _⊙ ≤ M _BH ≤ 10 ^5 M _⊙ in the globular star clusters of NGC 1399 at a frequency of 300.00 MHz. Employing the theoretical Bondi a
Externí odkaz:
https://doaj.org/article/39c28edb5d46432f8c8c0025b85dcb5a
Autor:
Jeremiah D. Paul, Richard M. Plotkin, W. N. Brandt, Christopher H. Ellis, Elena Gallo, Jenny E. Greene, Luis C. Ho, Amy E. Kimball, Daryl Haggard
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 66 (2024)
The supermassive black holes ( M _BH ∼ 10 ^6 –10 ^10 M _⊙ ) that power luminous active galactic nuclei (AGNs), i.e., quasars, generally show a correlation between thermal disk emission in the ultraviolet (UV) and coronal emission in hard X-rays
Externí odkaz:
https://doaj.org/article/6046b016d0a5471d9fa3f229a5855bab
Autor:
Behzad Tahmasebzadeh, Andrew Lapeer, Eugene Vasiliev, Monica Valluri, Matthew A. Taylor, Solveig Thompson
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 60 (2024)
Due to observational challenges, the mass function of black holes (BH) at lower masses is poorly constrained in the local universe. Understanding the occupation fraction of BHs in low-mass galaxies is crucial for constraining the origins of supermass
Externí odkaz:
https://doaj.org/article/4ae4494363d048ce912c79980f06593b