301 citations
- Goddard Space Flight CenterUS76 papers
- University of Maryland, Baltimore CountyUS29 papers
- University of Maryland, College ParkUS18 papers
- Universities Space Research AssociationUS16 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Max Planck Institute for AstrophysicsDE11 papers
- Pennsylvania State UniversityUS11 papers
- European Space Astronomy CentreES10 papers
- Johns Hopkins UniversityUS9 papers
- Max Planck Institute for Extraterrestrial PhysicsDE9 papers
- National Institute for AstrophysicsIT9 papers
- University of OxfordGB8 papers
7 papers · 2 filters
The absorption-dominated model for the X-ray spectra of type I active galaxies: MCG-6-30-15
L. Miller, T. J. Turner, J. N. Reeves
MCG-6-30-15 is the archetypal example of a type I active galaxy showing broad "red-wing" emission in its X-ray spectrum at energies below the 6.4 keV Fe K-alpha emission line and a…
Searching for New Physics with Ultrahigh Energy Cosmic Rays
Floyd W. Stecker, Sean T. Scully
Ultrahigh energy cosmic rays that produce giant extensive showers of charged particles and photons when they interact in the Earth's atmosphere provide a unique tool to search for…
A Chandra view of NGC 3621: a bulgeless galaxy hosting an AGN in its early phase?
M. Gliozzi, S. Satyapal, M. Eracleous +2
We report the detection of a weak X-ray point source coincident with the nucleus of the bulgeless disk galaxy NGC 3621, recently discovered by Spitzer to display high ionization mi…
The Supercritical Pile GRB Model: The Prompt to Afterglow Evolution
A. Mastichiadis, D. Kazanas
The "Supercritical Pile" is a very economical GRB model that provides for the efficient conversion of the energy stored in the protons of a Relativistic Blast Wave (RBW) into radia…
A decade of timing an accretion-powered millisecond pulsar: The continuing spin down and orbital evolution of SAX J1808.4-3658
J. M. Hartman, A. Patruno, D. Chakrabarty +4
The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretion-powered pulsar SAX J1808.4-3658 during 1998-2008. We present a pulse timing study of…
A statistical study of gamma-ray burst afterglows measured by the Swift Ultra-violet Optical Telescope
S. R. Oates, M. J. Page, P. Schady +14
We present the first statistical analysis of 27 UVOT optical/ultra-violet lightcurves of GRB afterglows. We have found, through analysis of the lightcurves in the observer's frame,…