Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Hogan, M. T."'
Autor:
Richard-Laferrière, A., Hlavacek-Larrondo, J., Nemmen, R. S., Rhea, C. L., Taylor, G. B., Prasow-Émond, M., Gendron-Marsolais, M., Latulippe, M., Edge, A. C., Fabian, A. C., Sanders, J. S., Hogan, M. T., Demontigny, G.
A variety of large-scale diffuse radio structures have been identified in many clusters with the advent of new state-of-the-art facilities in radio astronomy. Among these diffuse radio structures, radio mini-halos are found in the central regions of
Externí odkaz:
http://arxiv.org/abs/2007.01306
Autor:
Martz, C. G., McNamara, B. R., Nulsen, P. E. J., Vantyghem, A. N., Gingras, M-J., Babyk, Iu. V., Russell, H. R., Edge, A. C., McDonald, M., Tamhane, P. D., Fabian, A. C., Hogan, M. T.
We analyzed Chandra X-ray observations of five galaxy clusters whose atmospheric cooling times, entropy parameters, and cooling time to free-fall time ratios within the central galaxies lie below 1 Gyr, below 30 keV cm^2, and between 20 < tcool/tff <
Externí odkaz:
http://arxiv.org/abs/2003.11104
Autor:
Babyk, Iu. V., McNamara, B. R., Nulsen, P. E. J., Hogan, M. T., Vantyghem, A. N., Russell, H. R., Pulido, F. A., Edge, A. C.
X-ray luminosity, temperature, gas mass, total mass, and their scaling relations are derived for 94 early-type galaxies using archival $Chandra$ X-ray Observatory observations. Consistent with earlier studies, the scaling relations, $L_X \propto T^{4
Externí odkaz:
http://arxiv.org/abs/1803.00020
Autor:
Babyk, Iu. V., McNamara, B. R., Nulsen, P. E. J., Russell, H. R., Vantyghem, A. N., Hogan, M. T., Pulido, F. A.
We present atmospheric gas entropy profiles for 40 early type galaxies and 110 clusters spanning several decades of halo mass, atmospheric gas mass, radio jet power, and galaxy type. We show that within $\sim 0.1R_{2500}$ the entropy profiles of low-
Externí odkaz:
http://arxiv.org/abs/1802.02589
We perform a detailed study of the location of brightest cluster galaxies (BCGs) on the fundamental plane of black hole (BH) accretion, which is an empirical correlation between a BH X-ray and radio luminosity and mass supported by theoretical models
Externí odkaz:
http://arxiv.org/abs/1710.10268
Autor:
Pulido, F. A., McNamara, B. R., Edge, A. C., Hogan, M. T., Vantyghem, A. N., Russell, H. R., Nulsen, P. E. J., Babyk, I., Salomé, P.
We present an analysis of 55 central galaxies in clusters and groups with molecular gas masses and star formation rates lying between $10^{8}-10^{11}\ M_{\odot}$ and $0.5-270$ $M_{\odot}\ yr^{-1}$, respectively. We have used Chandra observations to d
Externí odkaz:
http://arxiv.org/abs/1710.04664
Autor:
Vantyghem, A. N., McNamara, B. R., Edge, A. C., Combes, F., Russell, H. R., Fabian, A. C., Hogan, M. T., McDonald, M., Nulsen, P. E. J., Salomé, P.
We present ALMA Cycle 4 observations of CO(1-0), CO(3-2), and $^{13}$CO(3-2) line emission in the brightest cluster galaxy of RXJ0821+0752. This is one of the first detections of $^{13}$CO line emission in a galaxy cluster. Half of the CO(3-2) line e
Externí odkaz:
http://arxiv.org/abs/1709.09679
Autor:
Gaspari, M., McDonald, M., Hamer, S. L., Brighenti, F., Temi, P., Gendron-Marsolais, M., Hlavacek-Larrondo, J., Edge, A. C., Werner, N., Tozzi, P., Sun, M., Stone, J. M., Tremblay, G. R., Hogan, M. T., Eckert, D., Ettori, S., Yu, H., Biffi, V., Planelles, S.
We propose a novel method to constrain turbulence and bulk motions in massive galaxies, groups and clusters, exploring both simulations and observations. As emerged in the recent picture of the top-down multiphase condensation, the hot gaseous halos
Externí odkaz:
http://arxiv.org/abs/1709.06564
Autor:
Russell, H. R., McNamara, B. R., Fabian, A. C., Nulsen, P. E. J., Combes, F., Edge, A. C., Hogan, M. T., McDonald, M., Salome, P., Tremblay, G., Vantyghem, A. N.
We present new ALMA observations tracing the morphology and velocity structure of the molecular gas in the central galaxy of the cluster Abell 1795. The molecular gas lies in two filaments that extend 5 - 7 kpc to the N and S from the nucleus and pro
Externí odkaz:
http://arxiv.org/abs/1708.08935
Autor:
Hogan, M. T., McNamara, B. R., Pulido, F., Nulsen, P. E. J., Vantyghem, A. N., Russell, H. R., Edge, A. C., Babyk, Iu., Main, R. A., McDonald, M.
We present accurate mass and thermodynamic profiles for a sample of 56 galaxy clusters observed with the Chandra X-ray Observatory. We investigate the effects of local gravitational acceleration in central cluster galaxies, and we explore the role of
Externí odkaz:
http://arxiv.org/abs/1704.00011