Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.3k papers
- Centro Brasileiro de Pesquisas FísicasBR2k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2k papers
- Imperial College LondonGB1.9k papers
- University of Maryland, College ParkUS1.9k papers
- RWTH Aachen UniversityDE1.8k papers
- European Organization for Nuclear ResearchCH1.8k papers
- University of ZurichCH1.8k papers
- Massachusetts Institute of TechnologyUS1.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT1.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT1.8k papers
- University of BristolGB1.8k papers
16 papers · 2 filters
INTEGRAL detection of hard X-rays from NGC 6334: Nonthermal emission from colliding winds or an AGN?
A. M. Bykov, A. M. Krassilchtchikov, Yu. A. Uvarov +12
We report the detection of hard X-ray emission from the field of the star-forming region NGC 6334 with the the International Gamma-Ray Astrophysics Laboratory INTEGRAL. The JEM-X m…
The weak INTEGRAL bursts GRB040223 and GRB040624: an emerging population of dark afterglows
P. Filliatre, S. Covino, P. D'Avanzo +18
We report here gamma-ray, X-ray and near-infrared observations of GRB040223 along with gamma-ray and optical observations of GRB040624. GRB040223 was detected by INTEGRAL close to…
An explicit scheme for multifluid magnetohydrodynamics
Stephen O'Sullivan, Turlough P. Downes
When modeling astrophysical fluid flows, it is often appropriate to discard the canonical magnetohydrodynamic approximation thereby freeing the magnetic field to diffuse with respe…
Particle Acceleration in Gamma-Ray Burst Jets
Frank M. Rieger, Peter Duffy
Gradual shear acceleration of energetic particles in gamma-ray burst (GRB) jets is considered. Special emphasis is given to the analysis of universal structured jets, and character…
The galaxies in the field of the nearby GRB980425/SN1998bw
S. Foley, D. Watson, J. Gorosabel +5
We present spectroscopic observations of ESO 184-G82, the host galaxy of GRB980425/SN1998bw, and six galaxies in its field. A host redshift of z=0.0087+/-0.0006 is derived, consist…
The soft X-ray blast in the apparently sub-luminous GRB 031203
D. Watson, S. A. Vaughan, R. Willingale +11
GRB031203 was a very low apparent luminosity gamma-ray burst (GRB). It was also the first GRB with a dust-scattered X-ray halo. The observation of the halo allowed us to infer the…
Plasma Diagnostics of Active Region Evolution and Implications for Coronal Heating
R. O. Milligan, P. T. Gallagher, M. Mathioudakis +2
A detailed study is presented of the decaying solar active region NOAA 10103 observed with the Coronal Diagnostic Spectrometer (CDS), the Michelson Doppler Imager (MDI) and the Ext…
Outshining the quasars at reionisation: The X-ray spectrum and lightcurve of the redshift 6.29 Gamma-Ray Burst GRB050904
D. Watson, J. N. Reeves, J. Hjorth +7
Gamma-ray burst (GRB) 050904 is the most distant X-ray source known, at z=6.295, comparable to the farthest AGN and galaxies. Its X-ray flux decays, but not as a power-law; it is d…
ISO observations of the interacting galaxy Markarian 297: with the powerful supernova remnant 1982aa
L. Metcalfe, B. O'Halloran, B. McBreen +10
Markarian (Mkn) 297 is a complex system with two interacting galaxies. Observations were made with ISO using ISOCAM, ISOPHOT and LWS. We present ISOCAM maps at 6.7, 7.7, 12 and 14.…
Periodic variability and binary black hole systems in blazars
Frank M. Rieger
We consider the periodic modulation of emission from jets in blazar-type sources. A differential Doppler boosting origin, associated with the helical motion of a radiating componen…
Particle acceleration timescales in relativistic shear flows
Frank M. Rieger, Peter Duffy
We review the acceleration of energetic particles in relativistic astrophysical jets characterized by a significant velocity shear. The possible formation of power-law momentum spe…
ISO observations of the Wolf-Rayet galaxies NGC 5430, NGC 6764, Mrk 309 and VII Zw 19
B. O'Halloran, B. McBreen, L. Metcalfe +2
Observations of four WR galaxies (NGC 5430, NGC 6764, Mrk 309 and VII Zw 19) using the Infrared Space Observatory are presented here. ISOCAM maps of NGC 5430, Mrk 309 and NGC 6764…
Out of the darkness: the infrared afterglow of the INTEGRAL burst GRB 040422 observed with the VLT
P. Filliatre, P. D'Avanzo, S. Covino +15
GRB 040422 was detected by the INTEGRAL satellite at an angle of only 3 degrees from the Galactic plane. Analysis of the prompt emission observed with the SPI and IBIS instruments…
Particle acceleration efficiencies in astrophysical shear flows
F. M. Rieger, P. Duffy
The acceleration of energetic particles in astrophysical shear flows is analyzed. We show that in the presence of a non-relativistic gradual velocity shear, power law particle mome…
Gamma-ray bursts and other sources of giant lightning discharges in protoplanetary systems
B. McBreen, E. Winston, S. McBreen +1
Lightning in the solar nebula is considered to be one of the probable sources for producing the chondrules that are found in meteorites. Gamma-ray bursts (GRBs) provide a large flu…
Particle acceleration in astrophysical shear flows
Frank M. Rieger, Peter Duffy
We consider the acceleration of particles due to a velocity shear in relativistic astrophysical flows. The basic physical picture and the formation of power law momentum spectra is…