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- University of Maryland, College ParkUS243 papers
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12 papers · 1 filter
iPTF14yb: The First Discovery of a GRB Afterglow Independent of a High-Energy Trigger
S. Bradley Cenko, Alex L. Urban, Daniel A. Perley +34
We report here the discovery by the Intermediate Palomar Transient Factory (iPTF) of iPTF14yb, a luminous ( mag), cosmological (redshift 1.9733), rapidly fading…
A Spectroscopic Study of the Extreme Black Widow PSR J1311-3430
Roger W. Romani, Alexei V. Filippenko, S. Bradley Cenko
We report on a series of spectroscopic observations of PSR J1311-3430, an extreme black-widow gamma-ray pulsar with a helium-star companion. In a previous study we estimated the ne…
The Extended GMRT Radio Halo Survey II: Further results and analysis of the full sample
R. Kale, T. Venturi, S. Giacintucci +6
The intra-cluster medium contains cosmic rays and magnetic fields that are manifested through the large scale synchrotron sources, termed as radio halos, relics and mini-halos. The…
The Lick AGN Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves
A. J. Barth, V. N. Bennert, G. Canalizo +27
In the Spring of 2011 we carried out a 2.5 month reverberation mapping campaign using the 3 m Shane telescope at Lick Observatory, monitoring 15 low-redshift Seyfert 1 galaxies. Th…
Exploring the Dust Content of Galactic Winds with Herschel. I. NGC 4631
M. Meléndez, S. Veilleux, C. Martin +8
We present a detailed analysis of deep far-infrared observations of the nearby edge-on star-forming galaxy NGC 4631 obtained with the Herschel Space Observatory. Our PACS images at…
The Compton hump and variable blue wing in the extreme low-flux NuSTAR observations of 1H0707-495
E. Kara, A. C. Fabian, A. M. Lohfink +10
The Narrow-line Seyfert I galaxy, 1H0707-495, has been well observed in the 0.3-10 keV band, revealing a dramatic drop in flux in the iron K alpha band, a strong soft excess, and s…