- California Institute of TechnologyUS1.2k papers
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169 papers · 2 filters
Excited-state OH Masers and Supernova Remnants
Ylva M. Pihlström, Vincent L. Fish, Loránt O. Sjouwerman +3
The collisionally pumped, ground-state 1720 MHz maser line of OH is widely recognized as a tracer for shocked regions and observed in star forming regions and supernova remnants. W…
GRB 070201: A possible Soft Gamma Ray Repeater in M31
E. O. Ofek, M. Muno, R. Quimby +13
The gamma-ray burst (GRB) 070201 was a bright short-duration hard-spectrum GRB detected by the Inter-Planetary Network (IPN). Its error quadrilateral, which has an area of 0.124 sq…
An Interaction of a Magellanic Leading Arm High Velocity Cloud with the Milky Way Disk
N. M. McClure-Griffiths, L. Staveley-Smith, F. J. Lockman +6
The Leading Arm of the Magellanic System is a tidally formed HI feature extending $\sim 60\arcdeg$ from the Magellanic Clouds ahead of their direction of motion. Using atomic hydro…
A Search for Synchrotron X-ray Emission in Radio Quasars
Hermine Landt, Paolo Padovani, Paolo Giommi +2
This paper presents XMM-Newton and Chandra X-ray spectroscopy of ten flat-spectrum radio quasars (FSRQ) which are candidates to have an X-ray spectrum dominated by jet synchrotron…
SHARC-II 350 micron Observations of Thermal Emission from Warm Dust in z>=5 Quasars
Ran Wang, Jeff Wagg, Chris L. Carilli +10
We present observations of four z>= SDSS quasars at 350 micron with the SHARC-II bolometer camera on the Caltech Submillimeter Observatory. These are among the deepest observations…
Outflow-Dominated Emission from the Quiescent Massive Black Holes in NGC 4621 and NGC 4697
J. M. Wrobel, Y. Terashima, L. C. Ho
The nearby elliptical galaxies NGC 4621 and NGC 4697 each host a supermassive black hole with a mass more than 1e8 Solar masses. Analysis of archival Chandra data and new NRAO Very…