Zobrazeno 1 - 10
of 192
pro vyhledávání: '"McNamara, Brian R"'
Autor:
Calzadilla, Michael S., McDonald, Michael, Benson, Bradford A., Bleem, Lindsey E., Croston, Judith H., Donahue, Megan, Edge, Alastair C., Floyd, Benjamin, Garmire, Gordon P., Hlavacek-Larrondo, Julie, Huynh, Minh T., Khullar, Gourav, Kraft, Ralph P., McNamara, Brian R., Noble, Allison G., Romero, Charles E., Ruppin, Florian, Somboonpanyakul, Taweewat, Voit, G. Mark
We present a multi-wavelength study of the brightest cluster galaxies (BCGs) in a sample of the 95 most massive galaxy clusters selected from South Pole Telescope (SPT) Sunyaev-Zeldovich (SZ) survey. Our sample spans a redshift range of 0.3 < z < 1.7
Externí odkaz:
http://arxiv.org/abs/2311.00396
Autor:
Tamhane, Prathamesh D., McNamara, Brian R., Russell, Helen R., Combes, Francoise, Qiu, Yu, Edge, Alastair C., Maiolino, Roberto, Fabian, Andrew C., Nulsen, Paul E. J., Johnstone, R., Carniani, Stefano
We present XSHOOTER observations with previous ALMA, MUSE and $HST$ observations to study the nature of radio-jet triggered star formation and the interaction of radio jets with the interstellar medium in the brightest cluster galaxy (BCG) in the Abe
Externí odkaz:
http://arxiv.org/abs/2212.11313
Autor:
Tamhane, Prathamesh D., McNamara, Brian R., Russell, Helen R., Edge, Alastair C., Fabian, Andrew C., Nulsen, Paul E. J., Babyk, Iurii V.
Publikováno v:
MNRAS 516 October 2022 Pages 861 882
Molecular gas flows are analyzed in 14 cluster galaxies (BCGs) centered in cooling hot atmospheres. The BCGs contain $10^{9}-10^{11}~\rm M_\odot$ of molecular gas, much of which is being moved by radio jets and lobes. The molecular flows and radio je
Externí odkaz:
http://arxiv.org/abs/2207.14326
Autor:
Calzadilla, Michael S., McDonald, Michael, Donahue, Megan, McNamara, Brian R., Fogarty, Kevin, Gaspari, Massimo, Gitti, Myriam, Russell, Helen R., Tremblay, Grant R., Voit, G. Mark, Ubertosi, Francesco
We present new, deep, narrow- and broad-band Hubble Space Telescope observations of seven of the most star-forming brightest cluster galaxies (BCGs). Continuum-subtracted [O II] maps reveal the detailed, complex structure of warm ($T \sim 10^4$ K) io
Externí odkaz:
http://arxiv.org/abs/2207.01624
Autor:
Hu, Haojie, Qiu, Yu, Gendron-Marsolais, Marie-Lou, Bogdanovic, Tamara, Hlavacek-Larrondo, Julie, Ho, Luis C., Inayoshi, Kohei, McNamara, Brian R.
The hot intracluster medium (ICM) is thought to be quiescent with low observed velocity dispersions. Surface brightness fluctuations of the ICM also suggest that its turbulence is subsonic with a Kolmogorov scaling relation, indicating that the visco
Externí odkaz:
http://arxiv.org/abs/2203.04977
Warm ionized and cold neutral outflows with velocities exceeding $100\,{\rm km\,s}^{-1}$ are commonly observed in galaxies and clusters. Theoretical studies however indicate that ram pressure from a hot wind, driven either by the central active galac
Externí odkaz:
http://arxiv.org/abs/2108.04247
Autor:
Liu, Haonan, Fabian, Andrew C., Pinto, Ciro, Russell, Helen R., Sanders, Jeremy S., McNamara, Brian R.
We present the analysis of XMM-Newton observations of two X-ray luminous cool core clusters, RXCJ1504.1-0248 and Abell 1664. The Reflection Grating Spectrometer reveals a radiative cooling rate of $180\pm 40\, \rm M_{\odot}\rm\,yr^{-1}$ and $34\pm 6\
Externí odkaz:
http://arxiv.org/abs/2105.03904
Outflows driven by active galactic nuclei (AGN) are an important channel for accreting supermassive black holes (SMBHs) to interact with their host galaxies and clusters. Properties of the outflows are however poorly constrained due to the lack of ki
Externí odkaz:
http://arxiv.org/abs/2103.06505
Autor:
McDonald, Michael, McNamara, Brian R., Calzadilla, Michael S., Chen, Chien-Ting, Gaspari, Massimo, Hickox, Ryan C., Kara, Erin, Korchagin, Ilia
We present a study of the relationship between black hole accretion rate (BHAR) and star formation rate (SFR) in a sample of giant elliptical galaxies. These galaxies, which live at the centers of galaxy groups and clusters, have star formation and b
Externí odkaz:
http://arxiv.org/abs/2012.09168
Publikováno v:
Nature Astronomy 4, 900-906 (2020)
Galaxy clusters are the most massive collapsed structures in the universe whose potential wells are filled with hot, X-ray emitting intracluster medium. Observations however show that a significant number of clusters (the so-called cool-core clusters
Externí odkaz:
http://arxiv.org/abs/2005.00549