Showing 2009 · astro-ph.HEShow all

9 papers · 2 filters

astro-ph.HE2009★ 70 cited

AKARI and BLAST Observations of the Cassiopeia A Supernova Remnant and Surrounding Interstellar Medium

B. Sibthorpe, P. A. R. Ade, J. J. Bock +30

We use new large area far infrared maps ranging from 65 - 500 microns obtained with the AKARI and the Balloon-borne Large Aperture Submillimeter Telescope (BLAST) missions to chara…

astro-ph.HE2009★ 2 cited

Spacetime constraints on accreting black holes

David Garofalo

We study the spin dependence of accretion onto rotating Kerr black holes using analytic techniques. In its linear regime, angular momentum transport in MHD turbulent accretion flow…

astro-ph.HE2009★ 75 cited

Cosmic-ray origin in OB associations and preferential acceleration of refractory elements: Evidence from abundances of elements 26Fe through 34Se

B. F. Rauch, J. T. Link, K. Lodders +15

We report abundances of elements from 26Fe to 34Se in the cosmic radiation measured during fifty days of exposure of the Trans-Iron Galactic Element Recorder (TIGER) balloon-borne…

astro-ph.HE2009★ 148 cited

The Collimation and Energetics of the Brightest Swift Gamma-Ray Bursts

S. B. Cenko, D. A. Frail, F. A. Harrison +22

Long-duration gamma-ray bursts (GRBs) are widely believed to be highly-collimated explosions (opening angle theta ~ 1-10 deg). As a result of this beaming factor, the true energy r…

astro-ph.HE2009★ 69 cited

The spin dependence of the Blandford-Znajek effect

David Garofalo

The interaction of large scale magnetic fields with the event horizon of rotating black holes (the Blandford-Znajek [1977] mechanism) forms the basis for some models of the most re…

astro-ph.HE2009★ 134 cited

The He-rich core-collapse supernova 2007Y: Observations from X-ray to Radio Wavelengths

Maximilian Stritzinger, Paolo Mazzali, Mark M. Phillips +21

A detailed study spanning approximately a year has been conducted on the Type Ib supernova 2007Y. Imaging was obtained from X-ray to radio wavelengths, and a comprehensive set of m…

astro-ph.HE2009★ 87 cited

A Decade of SN1993J: Discovery of Wavelength Effects in the Expansion Rate

J. M. Marcaide, I. Marti-Vidal, A. Alberdi +15

We have studied the growth of the shell-like radio structure of supernova SN1993J in M81 from September 1993 through October 2003 with very-long-baseline interferometry (VLBI) obse…

astro-ph.HE2009★ 1 cited

Optical Astrometry of Accreting Black Holes and Neutron Stars: Scientific Opportunities

John A. Tomsick, Andreas Quirrenbach, Shrinivas R. Kulkarni +2

The extreme conditions found near black holes and neutron stars provide a unique opportunity for testing physical theories. Observations of both types of compact objects can be use…

astro-ph.HE2009★ 45 cited

A Multi-Wavelength Study of the High Surface Brightness Hotspot in PKS1421-490

L. E. H. Godfrey, G. V. Bicknell, J. E. J. Lovell +9

Long Baseline Array imaging of the z=0.663 broad line radio galaxy PKS1421-490 reveals a 400 pc diameter high surface brightness hotspot at a projected distance of approximately 40…