Results 31 to 40 of about 26,793 (115)

Isotropic AGN Heating with Small Radio Quiet Bubbles in the NGC 5044 Group

, 2009
(abridged) A Chandra observation of the X-ray bright group NGC 5044 shows that the X-ray emitting gas has been strongly perturbed by recent outbursts from the central AGN and also by motion of the central dominant galaxy relative to the group gas.
Ascasibar, Athey, Baldi, Birzan, Birzan, Blanton, Brassington, Bruggen, Buote, Caon, Christine Jones, Churazov, Churazov, Clarke, David, David, David, Di Matteo, Ewan O'Sullivan, Fabian, Forman, Gastaldello, Gebhardt, Heinz, Jan Vrtilek, Jones, Kim, Kraft, Laurence P. David, Loewenstein, McNamara, Moretti, Nulsen, O'Sullivan, Pacholczyk, Paul Nulsen, Peterson, Sarazin, Simona Giacintucci, Somak Raychaudhury, Sparks, Temi, William Forman   +42 more
core   +1 more source

A Shock-Induced Pair of Superbubbles in the High-Redshift Powerful Radio Galaxy MRC 0406-244 [PDF]

, 2001
We present new optical spectroscopy of the high-redshift powerful radio galaxy MRC 0406$-$244 at redshift of 2.429. We find that the two extensions toward NW and SE probed in the rest-frame ultraviolet image are heated mainly by the nonthermal continuum ...
Alexander P. A., Arimoto N., Best P. N., De Breuck C., George Kosugi, Hiroko Taguchi, Hiroshi Sudou, Kazuhiro Sekiguchi, Kentaro Aoki, Kiichi Okita, Koji S. Kawabata, Masanori Iye, Masaru Ajiki, Michitoshi Yoshida, Motohara K., Motoko Inata, Noboru Ebizuka, Nobunari Kashikawa, Rees M. J., Rie R. Kobayashi, Rottgering H. J. A., Saeko Noda, Scarrott S. M., Shingo Nishiura, Shinobu S. Fujita, Tadafumi Takata, Takashi Murayama, Tohru Nagao, Tomohiko Ozawa, Toshiyuki Sasaki, Villar-Martin M., Yasuhiro Shimizu, Yasuhiro Shioya, Yasushi Yadomaru, Yohei Koyama, Yoshiaki Taniguchi, Yoshihiko Saito, Youichi Ohyama, Yuko Kakazu   +38 more
core   +2 more sources

Radio Galaxy NGC 1265 unveils the Accretion Shock onto the Perseus Galaxy Cluster

, 2011
We present a consistent 3D model for the head-tail radio galaxy NGC 1265 that explains the complex radio morphology and spectrum by a past passage of the galaxy and radio bubble through a shock wave. Using analytical solutions to the full Riemann problem
Battaglia, C. Pfrommer, Chandrasekhar, Churazov, Dursi, Dursi, Enßlin, Enßlin, Gisler, Kang, Kulsrud, Landau, Lau, Markevitch, Miley, Miniati, Quilis, Reiprich, Ryle, Ryu, Ryu, Ryu, Sijbring, Sun, T. W. Jones, Tremaine   +25 more
core   +1 more source

Mapping the particle acceleration in the cool core of the galaxy cluster RX J1720.1+2638

, 2014
We present new deep, high-resolution radio images of the diffuse minihalo in the cool core of the galaxy cluster RX J1720.1+2638. The images have been obtained with the Giant Metrewave Radio Telescope at 317, 617 and 1280 MHz and with the Very Large ...
Bourdin, Hervé, Brunetti, Gianfranco, Giacintucci, Simona, Markevitch, Maxim, Mazzotta, Pasquale, Venturi, Tiziana, ZuHone, John A.   +6 more
core   +1 more source

Plasma and Warm Dust in the Collisional Ring Galaxy VIIZw466 from VLA and ISO Observations [PDF]

, 1999
We present the first mid-infrared (Mid-IR) ($\lambda5-15\mu$m) and radio continuum ($\lambda\lambda$20,~6 and 3.6 cm) observations of the star-forming collisional ring galaxy VII Zw 466 and its host group made with the Infrared Space Observatory and the ...
Abergel A., Appleton P. N., C. Horellou, Cannon R. D., Cesarsky C. J., Charmandaris V., F. Ghigo, Higdon J. L., Horellou C., I. F. Mirabel, J. L. Higdon, Leger A., Mirabel I. F., P. N. Appleton, S. Lord, Starck J.-L., Strong A. W., V. Charmandaris, Verstraete L.   +18 more
core   +4 more sources

Simulations of the merging galaxy cluster Abell 3376

, 2013
Observed galaxy clusters often exhibit X-ray morphologies suggestive of recent interaction with an infalling subcluster. Abell 3376 is a nearby (z=0.046) massive galaxy cluster whose bullet-shaped X-ray emission indicates that it may have undergone a ...
Machado, Rubens E. G., Neto, Gastão B. Lima   +1 more
core   +1 more source

Low-frequency radio emission in the massive galaxy cluster MACS J0717.5 + 3745 [PDF]

, 2013
International audienceTo investigate the nonthermal emission mechanism and their interaction during cluster mergers, we analyze multiple low-frequency radio data for the X-ray luminous massive galaxy cluster MACS J0717.5 + 3745, located at z = 0.5548 ...
Combes, F., Dwarakanath, K. S., Ferrari, C., Guiderdoni, B., Narasimha, D., Pandey-Pommier, M., Richard, J., Sirothia, S.   +7 more
core   +3 more sources

Galactic and Extragalactic Magnetic Fields

, 2009
The strength of the total magnetic field in our Milky Way from radio Zeeman and synchrotron measurements is about 6 muG near the Sun and several mG in dense clouds, pulsar wind nebulae, and filaments near the Galactic Center.
Felix A. Aharonian, Frank Rieger, Rainer Beck, Werner Hofmann   +3 more
core   +1 more source

Cosmic-ray driven dynamo in galaxies [PDF]

, 2011
We present recent developments of global galactic-scale numerical models of the Cosmic Ray (CR) driven dynamo, which was originally proposed by Parker (1992).
Allen, Berezinskii, D. Wóltanski, H. Kotarba, Hanasz, Hanasz, Hanasz, Hanasz, Hanasz, K. Kowalik, Kowal, M. Hanasz, Schlickeiser, Siejkowski   +13 more
core   +2 more sources

AGN and their host galaxies in the local Universe: two mass independent Eddington ratio distribution functions characterize black hole growth

, 2017
We use a phenomenological model to show that black hole growth in the local Universe (z < 0.1) can be described by two separate, mass independent Eddington ratio distribution functions (ERDFs).
Caplar, Neven, Schawinski, Kevin, Trakhtenbrot, Benny, Treister, Ezequiel, Weigel, Anna K., Wong, O. Ivy   +5 more
core   +1 more source