Zobrazeno 1 - 10
of 1 820
pro vyhledávání: '"P. Mckernan"'
Autor:
Cook, Harrison E., McKernan, Barry, Ford, K. E. Saavik, Delfavero, Vera, Nathaniel, Kaila, Postiglione, Jake, Ray, Shawn, O'Shaughnessy, Richard
We use the Monte Carlo For AGN (active galactic nucleus) Channel Testing and Simulation (McFACTS, https://www.github.com/mcfacts/mcfacts) code to study the effect of AGN disk and nuclear star cluster parameters on predicted mass distributions for LIG
Externí odkaz:
http://arxiv.org/abs/2411.10590
Autor:
Delfavero, Vera, Ford, K. E. Saavik, McKernan, Barry, Cook, Harrison E., Nathaniel, Kaila, Postiglione, Jake, Ray, Shawn, O'Shaughnessy, Richard
The Active Galactic Nuclei (AGN) channel for the formation of binary black hole (BBH) mergers has been previously studied as a potential formation channel for the merging compact binaries observed by the LIGO/Virgo/KAGRA (LVK) scientific collaboratio
Externí odkaz:
http://arxiv.org/abs/2410.18815
Autor:
McKernan, Barry, Ford, K. E. Saavik, Cook, Harry E., Delfavero, Vera, Nathaniel, Kaila, Postiglione, Jake, Ray, Shawn, O'Shaughnessy, Richard
Active galactic nuclei (AGN) are a promising source of the binary black hole (BBH) mergers observed in gravitational waves with LIGO-Virgo-Kagra (LVK). Constraining the AGN channel allows us to limit AGN parameter space (disk density, size, average l
Externí odkaz:
http://arxiv.org/abs/2410.16515
Autor:
Cabrera, Tomás, Palmese, Antonella, Hu, Lei, O'Connor, Brendan, Ford, K. E. Saavik, McKernan, Barry, Andreoni, Igor, Ahumada, Tomás, Amsellem, Ariel, Busmann, Malte, Clark, Peter, Coughlin, Michael W., Dadiani, Ekaterine, Diaz, Veronica, Graham, Matthew J., Gruen, Daniel, Kunnumkai, Keerthi, Postiglione, Jake, Sommer, Julian S., Valdes, Francisco
We carried out long-term monitoring of the LIGO/Virgo/KAGRA binary black hole (BBH) merger candidate S230922g in search of electromagnetic emission from the interaction of the merger remnant with an embedding active galactic nuclei (AGN) accretion di
Externí odkaz:
http://arxiv.org/abs/2407.10698
Autor:
Wang, Yihan, Graham, Matthew J., Ford, K. E. Saavik, McKernan, Barry, Ryu, Taeho, Stern, Daniel
The phenomenon of changing-look (CL) behavior in active galactic nuclei (AGN) is characterized by dramatic changes in luminosity and/or emission line profiles over relatively short periods, ranging from months to years. The origin of CL-AGNs remains
Externí odkaz:
http://arxiv.org/abs/2406.12096
Autor:
Ryu, Taeho, McKernan, Barry, Ford, Saavik, Cantiello, Matteo, Graham, Matthew, Stern, Daniel, Leigh, Nathan W. C
Stars embedded in active galactic nucleus (AGN) disks or captured by them may scatter onto the supermassive black hole (SMBH), leading to a tidal disruption event (TDE). Using the moving-mesh hydrodynamics simulations with {\small AREPO}, we investig
Externí odkaz:
http://arxiv.org/abs/2310.00610
Tidal Disruption Events (TDEs) are routinely observed in quiescent galaxies, as stars from the nuclear star cluster are scattered into the loss cone of the central supermassive black hole (SMBH). TDEs are also expected to occur in Active Galactic Nuc
Externí odkaz:
http://arxiv.org/abs/2310.00020
Autor:
McKernan, B., Ford, K. E. S.
Merging black holes (BH) are expected to produce remnants with large dimensionless spin parameters ($a_{\rm spin} \sim 0.7$). However, gravitational wave (GW) observations with LIGO/Virgo suggest that merging BH are consistent with modestly positive
Externí odkaz:
http://arxiv.org/abs/2309.15213
Autor:
Saade, M. Lynne, Brightman, Murray, Stern, Daniel, Connor, Thomas, Djorgovski, S. G., D'Orazio, Daniel J., Ford, K. E. S., Graham, Matthew J., Haiman, Zoltan, Jun, Hyunsung D., Kammoun, Elias, Kraft, Ralph P., McKernan, Barry, Vikhlinin, Alexei, Walton, Dominic J.
We present analysis of NuSTAR X-ray observations of three AGN that were identified as candidate subparsec binary supermassive black hole (SMBH) systems in the Catalina Real-Time Transient Survey based on apparent periodicity in their optical light cu
Externí odkaz:
http://arxiv.org/abs/2304.06144
Two-body scatterings under the potential of a massive object are very common in astrophysics. If the massive body is far enough away that the two small bodies are in their own gravitational sphere of influence, the gravity of the massive body can be
Externí odkaz:
http://arxiv.org/abs/2303.04889