Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Colin DeGraf"'
Autor:
Nianyi Chen, Tiziana Di Matteo, Yueying Ni, Michael Tremmel, Colin DeGraf, Yue Shen, A Miguel Holgado, Simeon Bird, Rupert Croft, Yu Feng
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 522:1895-1913
We examine the dual (both BHs active) and offset (one BH active) AGN population (comprising $\sim$ 2000 pairs at $0.5\,\text{kpc}\lesssim\Delta r
Comment: 17 Pages, 18 Figures; comments welcome!
Comment: 17 Pages, 18 Figures; comments welcome!
Autor:
Samuel Banks, Katharine Lee, Nazanin Azimi, Kendall Scarborough, Nikolai Stefanov, Indra Periwal, Nianyi Chen, Colin DeGraf, Tiziana Di Matteo
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 512:6007-6020
The launch of space-based gravitational-wave (GW) detectors (e.g. Laser Interferometry Space Antenna; LISA) and current and upcoming Pulsar Timing Arrays will extend the GW window to low frequencies, opening new investigations into dynamical processe
Autor:
Yueying Ni, Tiziana Di Matteo, Simeon Bird, Rupert Croft, Yu Feng, Nianyi Chen, Michael Tremmel, Colin DeGraf, Yin Li
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 513:670-692
We present the evolution of black holes (BHs) and their relationship with their host galaxies in Astrid, a large-volume cosmological hydrodynamical simulation with box size 250 $h^{-1} \rm Mpc$ containing $2\times5500^3$ particles evolved to z=3. Ast
Resolving discs and mergers in z ∼ 2 heavily reddened quasars and their companion galaxies with ALMA
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We present sub-arcsecond resolution ALMA imaging of the CO(3-2) emission in two $z\sim2.5$ heavily reddened quasars (HRQs) - ULASJ1234+0907 and ULASJ2315+0143 - and their companion galaxies. Dynamical modeling of the resolved velocity fields enables
Autor:
Bailey Sykes, Hannah Middleton, Andrew Melatos, Tiziana Di Matteo, Colin DeGraf, Aklant Bhowmick
A population of super-massive black hole binaries is expected to generate a stochastic gravitational wave background (SGWB) in the pulsar timing array (PTA) frequency range of $10^{-9}$--$10^{-7}$ Hz. Detection of this signal is a current observation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84ff83a627e45333ed6bfb24d8fc381b
Autor:
Kelly Holley-Bockelmann, Colin DeGraf, Debora Sijacki, Volker Springel, Greg Snyder, Tiziana Di Matteo
Publikováno v:
Monthly Notices of the Royal Astronomical Society
With projects such as Laser Interferometer Space Antenna (LISA) and Pulsar Timing Arrays expected to detect gravitational waves from supermassive black hole mergers in the near future, it is key that we understand what we expect those detections to b
Autor:
Nianyi Chen, Yueying Ni, A Miguel Holgado, Tiziana Di Matteo, Michael Tremmel, Colin DeGraf, Simeon Bird, Rupert Croft, Yu Feng
We examine massive black hole (MBH) mergers and their associated gravitational wave signals from the large-volume cosmological simulation Astrid. Astrid includes galaxy formation and black hole models recently updated with a MBH seed population betwe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07e0c726777aaa5f3ecd5bdbb904e2f3
Autor:
Yueying Ni, Simeon Bird, Nianyi Chen, Yu Feng, Michael Tremmel, Colin DeGraf, Tiziana Di Matteo
In this work we establish and test methods for implementing dynamical friction for massive black hole pairs that form in large volume cosmological hydrodynamical simulations which include galaxy formation and black hole growth. We verify our models a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a9b775248a1851928b3ff2cbaf4a182
Autor:
Debora Sijacki, Colin DeGraf
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We study how statistical properties of supermassive black holes depend on the frequency and conditions for massive seed formation in cosmological simulations of structure formation. We develop a novel method to recalculate detailed growth histories a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68dc30aed01466447bd614cc38dfede7
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2017, 466 (2), pp.1462-1476. ⟨10.1093/mnras/stw2777⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 466 (2), pp.1462-1476. ⟨10.1093/mnras/stw2777⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2017, 466 (2), pp.1462-1476. ⟨10.1093/mnras/stw2777⟩
Mon.Not.Roy.Astron.Soc., 2017, 466 (2), pp.1462-1476. 〈10.1093/mnras/stw2777〉
Monthly Notices of the Royal Astronomical Society, 2017, 466 (2), pp.1462-1476. ⟨10.1093/mnras/stw2777⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 466 (2), pp.1462-1476. ⟨10.1093/mnras/stw2777⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2017, 466 (2), pp.1462-1476. ⟨10.1093/mnras/stw2777⟩
Mon.Not.Roy.Astron.Soc., 2017, 466 (2), pp.1462-1476. 〈10.1093/mnras/stw2777〉
High-resolution simulations of supermassive black holes in isolated galaxies have suggested the importance of short (~10 Myr) episodes of rapid accretion caused by interactions between the black hole and massive dense clouds within the host. Accretio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bd9c4e43da53a8d2fd8b6d5160fb8a5