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- University of Maryland, College ParkUS743 papers
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8 papers · 2 filters
The Surprising Absence of Absorption in the Far-Ultraviolet Spectrum of Mrk 231
S. Veilleux, M. Trippe, F. Hamann +11
Mrk 231, the nearest (z = 0.0422) quasar, hosts both a galactic-scale wind and a nuclear-scale iron low-ionization broad absorption line (FeLoBAL) outflow. We recently obtained a f…
Alignment of Magnetized Accretion Disks and Relativistic Jets with Spinning Black Holes
Jonathan C. McKinney, Alexander Tchekhovskoy, Roger D. Blandford
Accreting black holes (BHs) produce intense radiation and powerful relativistic jets, which are affected by the BH's spin magnitude and direction. While thin disks might align with…
An HST/WFC3-UVIS View of the Starburst in the Cool Core of the Phoenix Cluster
Michael McDonald, Bradford Benson, Sylvain Veilleux +2
We present Hubble Space Telescope Wide Field Camera 3 observations of the core of the Phoenix Cluster SPT-CLJ2344-4243 in five broadband filters spanning rest-frame 1000--5500A. Th…
Sowing the seeds of massive black holes in small galaxies: Young clusters as the building blocks of Ultra-Compact-Dwarf Galaxies
Pau Amaro-Seoane, Symeon Konstantinidis, Marc Dewi Freitag +2
Interacting galaxies often have complexes of hundreds of young stellar clusters of individual masses in regions that are a few hundred parsecs across. These…
Low frequency follow up of radio halos and relics in the GMRT Radio Halo Cluster Survey
Tiziana Venturi, Simona Giacintucci, Daniele Dallacasa +4
We performed GMRT low frequency observations of the radio halos, relics and new candidates belonging to the GMRT Radio Halo Cluster Sample first observed at 610 MHz. High sensitivi…
Recurrent radio outbursts at the center of the NGC1407 galaxy group
Simona Giacintucci, Ewan O'Sullivan, Tracy E. Clarke +6
We present deep Giant Metrewave Radio Telescope (GMRT) radio observations at 240, 330 and 610 MHz of the complex radio source at the center of the NGC1407 galaxy group. Previous GM…