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
15 papers · 1 filter
Multi-frequency monitoring of gamma-ray loud blazars: I. Light curves and spectral energy distributions
U. Bach, C. M. Raiteri, M. Villata +23
Context: Being dominated by non-thermal emission from aligned relativistic jets, blazars allow us to elucidate the physics of extragalactic jets, and, ltimately, how the energy is…
Redshift Filtering by Swift Apparent X-ray Column Density
Dirk Grupe, John A. Nousek, Daniel E. vanden Berk +5
We remark on the utility of an observational relation between the absorption column density in excess of the Galactic absorption column density, $ΔN_{\rm H} = N_{\rm H, fit} - N_{\…
The "Supercritical Pile" GRB Model: Afterglows and GRB, XRR, XRF Unification
Demosthenes Kazanas, Apostolos Mastichiadis, Markos Georganopoulos
We present the general notions and observational consequences of the "Supercritical Pile" GRB model; the fundamental feature of this model is a detailed process for the conversion…
The variable X-ray spectrum of Markarian 766 - I. Principal components analysis
L. Miller, T. J. Turner, J. N. Reeves +3
Aims: We analyse a long XMM-Newton spectrum of the narrow-line Seyfert 1 galaxy Mrk 766, using the marked spectral variability on timescales >20ks to separate components in the X-r…
Relativistic Beaming and the Intrinsic Properties of Extragalactic Radio Jets
M. H. Cohen, M. L. Lister, D. C. Homan +4
Relations between the observed quantities for a beamed radio jet, apparent transverse speed and apparent luminosity (beta_app,L), and the intrinsic quantities, Lorentz factor and i…
A Stellar-mass Black Hole in the Ultra-luminous X-ray Source M82 X-1?
Takashi Okajima, Ken Ebisawa, Toshihiro Kawaguchi
We have analyzed the archival XMM-Newton data of the bright Ultra-Luminous X-ray Source (ULX) M82 X-1 with an 105 ksec exposure when the source was in the steady state. Thanks to t…