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- Center for Astrophysics Harvard & SmithsonianUS851 papers
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574 papers · 1 filter
The June 2008 flare of Markarian 421 from optical to TeV energies
The Agile Collaboration, Webt Collaboration, Magic Collaboration +2
We present optical, X-ray, high energy ( GeV) and very high energy ( GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken betwee…
Discovery of Very High-Energy Gamma-Ray Radiation from the BL Lac 1ES 0806+524
VERITAS Collaboration, V. Acciari, E. Aliu +90
The high-frequency-peaked BL-Lacertae object \objectname{1ES 0806+524}, at redshift z=0.138, was observed in the very-high-energy (VHE) gamma-ray regime by VERITAS between November…
HX-POL - A Balloon-Borne Hard X-Ray Polarimeter
H. Krawczynski, A. Garson, Q. Li +10
We report on the design and estimated performance of a balloon-borne hard X-ray polarimeter called HX-POL. The experiment uses a combination of Si and Cadmium Zinc Telluride detect…
Rapid Formation of Icy Super-Earths and the Cores of Gas Giant Planets
Scott J. Kenyon, Benjamin C. Bromley
We describe a coagulation model that leads to the rapid formation of super-Earths and the cores of gas giant planets. Interaction of collision fragments with the gaseous disk is th…
Gas Phase diagnostics of Protoplanetary disk extension
B. Ercolano, J. J. Drake, C. J. Clarke
We investigate the potential of using ratios of fine structure and near-infrared forbidden line transitions of atomic carbon to diagnose protoplanetary disk extension. Using result…
Do the nearby BHB stars belong to the Thick Disk or the Halo?
T. D. Kinman, Heather L. Morrison, Warren R. Brown
We study the Milky Way region Z<3.0 kpc, where the thick disk and inner halo overlap, by using the kinematics of local blue horizontal branch (BHB) stars (within 1 kpc) and new sam…