• Publications
  • Influence
Radio/X-ray correlation in the low/hard state of GX 339-4
We present the results of a long-term study of the black hole candidate GX 339 4 using simultaneous radio (from the Australia Telescope Compact Array) and X-ray (from the Rossi X-ray Timing Explorer
Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
The characteristic pion-decay feature is detected in the gamma-ray spectra of two SNRs, IC 443 and W44, with the Fermi Large Area Telescope, providing direct evidence that cosmic-ray protons are accelerated in SNRs.
A change in the optical polarization associated with a γ-ray flare in the blazar 3C 279
It is widely accepted that strong and variable radiation detected over all accessible energy bands in a number of active galaxies arises from a relativistic, Doppler-boosted jet pointing close to our
Radiatively efficient accreting black holes in the hard state: the case study of H1743-322
In recent years, much effort has been devoted to unravelling the connection between the accretion flow and the jets in accreting compact objects. In the present work, we report new constraints on
The 'universal' radio/X-ray flux correlation : the case study of the black hole GX 339-4
The existing radio and X-ray flux correlation for Galactic black holes in the hard and quiescent states relies on a sample which is mostly dominated by two sources (GX 339-4 and V404 Cyg) observed in
Simultaneous Multiwavelength Observations of the Low/Hard State of the X-Ray Transient Source SWIFT J1753.5-0127
We report the results of simultaneous multiwavelength observations of the X-ray transient source SWIFT J1753.5-0127 performed with INTEGRAL, RXTE, NTT, REM, and VLA on 2005 August 10-12. The source,
FERMI Large Area Telescope and multi-wavelength observations of the flaring activity of PKS 1510-089 between 2008 september and 2009 june
We report on the multi-wavelength observations of PKS 1510-089 (a flat spectrum radio quasar (FSRQ) at z = 0.361) during its high activity period between 2008 September and 2009 June. During this 11
Orbital Parameters for the Black Hole Binary XTE J1650–500*
We present R-band photometry of the X-ray transient and candidate black hole binary XTE J1650-500 obtained between 2003 May and August with the 6.5 m Clay telescope. A timing analysis of these data
Radio Emission from an Ultraluminous X-ray Source
Radio emission from an ultraluminous x-ray source in the dwarf irregular galaxy NGC 5408 is discovered, and thex-ray, radio, and optical fluxes as well as the x-rays spectral shape are consistent with beamed relativistic jet emission from a accreting stellar black hole.
Fermi LAT Observations of LS 5039
The first results from observations of the high mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate