Zobrazeno 1 - 10
of 76
pro vyhledávání: '"P E J Nulsen"'
Autor:
John A. ZuHone, Gerrit Schellenberger, Anna Ogorzałek, Benjamin D. Oppenheimer, Jonathan Stern, Ákos Bogdán, Nhut Truong, Maxim Markevitch, Annalisa Pillepich, Dylan Nelson, Joseph N. Burchett, Ildar Khabibullin, Caroline A. Kilbourne, Ralph P. Kraft, Paul E. J. Nulsen, Sylvain Veilleux, Mark Vogelsberger, Q. Daniel Wang, Irina Zhuravleva
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 49 (2024)
The hot, X-ray-emitting phase of the circumgalactic medium of massive galaxies is believed to be the reservoir of baryons from which gas flows onto the central galaxy and into which feedback from active galactic nuclei and stars inject mass, momentum
Externí odkaz:
https://doaj.org/article/f4539e1a93ab4d52a110df75797b72fb
Publikováno v:
Galaxies, Vol 11, Iss 2, p 51 (2023)
The Fanaroff–Riley Class II radio galaxy Cygnus A hosts jets that produce radio emission, X-ray cavities, cocoon shocks, and X-ray hotspots, where the jet interacts with the ICM. Surrounding one hotspot is a peculiar “hole” feature, which appea
Externí odkaz:
https://doaj.org/article/5a48ae884bfe418dbdec25131c298b16
Autor:
Zhensong Hu, Yuanyuan Su, Zhiyuan Li, Kelley M. Hess, Ralph P. Kraft, William R. Forman, Paul E. J. Nulsen, Sarrvesh S. Sridhar, Andra Stroe, Junhyun Baek, Aeree Chung, Dirk Grupe, Hao Chen, Jimmy A. Irwin, Christine Jones, Scott W. Randall, Elke Roediger
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 104 (2023)
To understand the formation and growth of supermassive black holes (SMBHs) and their coevolution with host galaxies, it is essential to know the impact of environment on the activity of active galactic nuclei (AGNs). We present new Chandra X-ray obse
Externí odkaz:
https://doaj.org/article/8264a484f05d4b689b6d5ac21856174f
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 69 (2023)
A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed
Externí odkaz:
https://doaj.org/article/df67876fbb5046a4b553e8e6d0220868
Autor:
H R Russell, P E J Nulsen, D Caprioli, U Chadayammuri, A C Fabian, M W Kunz, B R McNamara, J S Sanders, A Richard-Laferrière, M Beleznay, R E A Canning, J Hlavacek-Larrondo, L J King
We present a new 2 Ms Chandra observation of the cluster merger Abell 2146, which hosts two huge M~2 shock fronts each ~500 kpc across. For the first time, we resolve and measure the width of cluster merger shocks. The best-fit width for the bow shoc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f2462ab4c4030f43973c531a961d430
Publikováno v:
The Astrophysical Journal, 2023, Vol.944(1), pp.69 [Peer Reviewed Journal]
A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a66ef49a552d65f413ab57b4658f927
http://arxiv.org/abs/2110.15410
http://arxiv.org/abs/2110.15410
Autor:
Robert Main, P. E. J. Nulsen, Jeremy S. Sanders, Francoise Combes, A. C. Edge, Christopher P. O'Dea, Stefi A. Baum, J. B. R. Oonk, A. C. Fabian, P. Salomé, I. J. Parrish, Brian R. McNamara, A. N. Vantyghem, Grant R. Tremblay, Norm Murray, Megan Donahue, M. T. Hogan, G. M. Voit, Robert W. O'Connell, Helen Russell
Publikováno v:
Astrophysical journal, 2016, Vol.832(2), pp.148 [Peer Reviewed Journal]
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2016, 832 (2), pp.148. ⟨10.3847/0004-637X/832/2/148⟩
The Astrophysical Journal, 2016, 832 (2), pp.148. ⟨10.3847/0004-637X/832/2/148⟩
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2016, 832 (2), pp.148. ⟨10.3847/0004-637X/832/2/148⟩
The Astrophysical Journal, 2016, 832 (2), pp.148. ⟨10.3847/0004-637X/832/2/148⟩
We present ALMA CO(1-0) and CO(3-2) observations of the brightest cluster galaxy (BCG) in the 2A 0335+096 galaxy cluster (z = 0.0346). The total molecular gas mass of (1.13+/-0.15) x 10^9 M_sun is divided into two components: a nuclear region and a 7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8b66d14421693e9b67f1ecca6ce4b38
https://www.repository.cam.ac.uk/handle/1810/262084
https://www.repository.cam.ac.uk/handle/1810/262084
We combine a semi-analytic galaxy formation model (Nulsen and Fabian 1997) with a prescription for the obscured growth of massive black holes (Nulsen and Fabian 2000; Fabian 1999), to reproduce the hard X-ray background (XRB), the local 2-10keV AGN l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e392e50e1663c55dfd2348bde3e99ade
https://doi.org/10.1046/j.1365-8711.2000.03901.x
https://doi.org/10.1046/j.1365-8711.2000.03901.x
Autor:
R. P. Kraft, Daniel A. Evans, Dharam V. Lal, P. E. J. Nulsen, Martin J. Hardcastle, Julia C. Lee, William R. Forman, Judith H. Croston, C. Jones
Publikováno v:
The Astrophysical Journal. 722:1735-1743
We present results from a 42 ks Chandra/ACIS-S observation of the transitional FRI/FRII radio galaxy 3C288 at z = 0.246. We detect $\sim$3 keV gas extending to a radius of $\sim$0.5 Mpc with a 0.5-2.0 keV luminosity of 6.6 $\times$ 10$^{43}$ ergs s$^
Autor:
A. C. Fabian, Jeremy S. Sanders, P. E. J. Nulsen, Aurora Simionescu, Norbert Werner, Steven W. Allen, E. T. Million, Hans Böhringer
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 407:2046-2062
(abridged) Using a deep Chandra exposure (574 ks), we present high-resolution thermodynamic maps created from the spectra of $\sim$16,000 independent regions, each with $\sim$1,000 net counts. The excellent spatial resolution of the thermodynamic map