Zobrazeno 1 - 10
of 335
pro vyhledávání: '"Christopher S Reynolds"'
Autor:
Helen R. Russell, Laura A. Lopez, Steven W. Allen, George Chartas, Prakriti Pal Choudhury, Renato A. Dupke, Andrew C. Fabian, Anthony M. Flores, Kristen Garofali, Edmund Hodges-Kluck, Michael J. Koss, Lauranne Lanz, Bret D. Lehmer, Jiang-Tao Li, W. Peter Maksym, Adam B. Mantz, Michael McDonald, Eric D. Miller, Richard F. Mushotzky, Yu Qiu, Christopher S. Reynolds, Francesco Tombesi, Paolo Tozzi, Anna Trindade-Falcão, Stephen A. Walker, Ka-Wah Wong, Mihoko Yukita, Congyao Zhang
Publikováno v:
Universe, Vol 10, Iss 7, p 273 (2024)
Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks, producing a dynamic interstellar medium. On large scales bordering the cosmic web, feedback drives enriched gas o
Externí odkaz:
https://doaj.org/article/0bfd30ecf20c4ae6b9147ee79a4684bd
Autor:
Zijian Zhang, Lars Lund Thomsen, Lixin Dai, Christopher S. Reynolds, Javier A. García, Erin Kara, Riley Connors, Megan Masterson, Yuhan Yao, Thomas Dauser
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 157 (2024)
It has been recently discovered that a few super-Eddington sources undergoing black hole super-Eddington accretion exhibit X-ray reflection signatures. In such new systems, one expects the coronal X-ray emissions to be mainly reflected by optically t
Externí odkaz:
https://doaj.org/article/e052e11096ae40f0b263eb8c8b62796e
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 2, p 97 (2024)
We present the results from a pair of high-resolution, long-timescale (∼10 ^5 GM / c ^3 ), global, three-dimensional magnetohydrodynamical accretion disk simulations with differing initial magnetic plasma β in order to study the effects of the ini
Externí odkaz:
https://doaj.org/article/24c19b24db5b4e30ae25516a04b77a47
Autor:
Júlia Sisk-Reynés, Christopher S. Reynolds, Michael L. Parker, James H. Matthews, M. C. David Marsh
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 5 (2023)
Axion-like particles (ALPs) are well-motivated extensions of the Standard Model of Particle Physics and a generic prediction of some string theories. X-ray observations of bright active galactic nuclei (AGNs) hosted by rich clusters of galaxies are e
Externí odkaz:
https://doaj.org/article/3d62ffb2e25c4833affdf6263ebc049b
Autor:
Zuobin Zhang, Jiachen Jiang, Honghui Liu, Cosimo Bambi, Christopher S. Reynolds, Andrew C. Fabian, Thomas Dauser, Kristin Madsen, Andrew Young, Luigi Gallo, Zhibo Yu, John Tomsick
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 1, p 4 (2023)
We present the results from a coordinated XMM-Newton + NuSTAR observation of the Seyfert 1 galaxy ESO 511−G030. With this joint monitoring program, we conduct a detailed variability and spectral analysis. The source remained in a low flux and very
Externí odkaz:
https://doaj.org/article/d87540988ff14e83a35455ae3e942fd0
Autor:
Zhibo Yu, Jiachen Jiang, Cosimo Bambi, Luigi C Gallo, Dirk Grupe, Andrew C Fabian, Christopher S Reynolds, William N Brandt
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 522:5456-5468
We report a detailed analysis of the XMM-Newton spectra of six Narrow-Line Seyfert 1 (NLS1) galaxies at redshift z = 0.35--0.92. Compared with the NLS1s at lower redshift in the previously most-studied sample, these NLS1s have larger black hole (BH)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11510beed768eda139680822cf0189f7
https://doi.org/10.1093/mnras/stad1327
https://doi.org/10.1093/mnras/stad1327
Autor:
Jiachen Jiang, Thomas Dauser, Andrew C Fabian, William N Alston, Luigi C Gallo, Michael L Parker, Christopher S Reynolds
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Previously, we modelled the X-ray spectra of the narrow-line Seyfert 1 galaxy IRAS 13224$-$3809 using a disc reflection model with a fixed electron density of $10^{15}$ cm$^{-3}$. An additional blackbody component was required to fit the soft X-ray e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb71984a6cfbdddabb8681f1ecd4d7cc
https://doi.org/10.1093/mnras/stac1144
https://doi.org/10.1093/mnras/stac1144
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We use numerical hydrodynamics simulations to study line driven winds launched from an accreting alpha-disc. Building on previous work where the driving radiation field is static, we compute a time-dependent radiation flux from the local, variable ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d749be54630adce48be19eca56cf119b
http://arxiv.org/abs/2301.03632
http://arxiv.org/abs/2301.03632
Autor:
Júlia Sisk-Reynés, James H Matthews, Christopher S Reynolds, Helen R Russell, Robyn N Smith, M C David Marsh
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Axion-Like Particles (ALPs) are predicted by several Beyond the Standard Model theories, in particular, string theory. In the presence of an external magnetic field perpendicular to the direction of propagation, ALPs can couple to photons. Therefore,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4327fafcf5dc429b6be58446946395ca
https://doi.org/10.1093/mnras/stab3464
https://doi.org/10.1093/mnras/stab3464
Autor:
Collin Lewin, Erin Kara, Dan Wilkins, Guglielmo Mastroserio, Javier A. García, Rachel C. Zhang, William N. Alston, Riley Connors, Thomas Dauser, Andrew Fabian, Adam Ingram, Jiachen Jiang, Anne Lohfink, Matteo Lucchini, Christopher S. Reynolds, Francesco Tombesi, Michiel van der Klis, Jingyi Wang
Publikováno v:
The Astrophysical Journal
Ark 564 is an extreme high-Eddington Narrow-line Seyfert 1 galaxy, known for being one of the brightest, most rapidly variable soft X-ray AGN, and for having one of the lowest temperature coronae. Here we present a 410-ks NuSTAR observation and two 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc36dc5548a0d80a218230c119ec6adc
http://arxiv.org/abs/2210.01810
http://arxiv.org/abs/2210.01810