18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of California, BerkeleyUS1.3k papers
- Goddard Space Flight CenterUS457 papers
- California Institute of TechnologyUS379 papers
- Centre National de la Recherche ScientifiqueFR367 papers
- Lawrence Berkeley National LaboratoryUS262 papers
- Jet Propulsion LaboratoryUS260 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR240 papers
- National Institute for AstrophysicsIT239 papers
- University of CambridgeGB208 papers
- Imperial College LondonGB203 papers
- Institut de Recherche en Astrophysique et PlanétologieFR195 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR181 papers
28 papers · 2 filters
Observations of giant outbursts from Cygnus X-1
S. Golenetskii, R. Aptekar, D. Frederiks +5
We present interplanetary network localization, spectral, and time history information for 7 episodes of exceptionally intense gamma-ray emission from Cygnus X-1. The outbursts occ…
Multiple Methods for Estimating the Bispectrum of the Cosmic Microwave Background with Application to the MAXIMA Data
M. G. Santos, A. Heavens, A. Balbi +11
We describe different methods for estimating the bispectrum of Cosmic Microwave Background data. In particular we construct a minimum variance estimator for the flat-sky limit and…
XMM-Newton observations of PSR B1823-13: An asymmetric synchrotron nebula around a Vela-like pulsar
Bryan Gaensler, Norbert Schulz, Vicky Kaspi +2
We present a deep observation with the X-ray Multi-Mirror Mission of PSR B1823-13, a young pulsar with similar properties to the Vela pulsar. We detect two components to the X-ray…
High Resolution X-ray Spectroscopic Constraints on Cooling-Flow Models for Clusters of Galaxies
J. R. Peterson, S. M. Kahn, F. B. S. Paerels +5
We present high resolution X-ray spectra of 14 putative cooling-flow clusters of galaxies obtained with the Reflection Grating Spectrometer on XMM-Newton. The clusters in the sampl…
Hidden Subluminous sd/wd among the FAUST UV sources toward OPHIUCHUS
Liliana Formiggini
A UV image in the direction of Ophiuchus, obtained with the FAUST instrument is analysed. Suitable candidates as unrecognized subluminous stars are selected comparing the observed…
Confirmation of Two Cyclotron Lines in Vela X-1
I. Kreykenbohm, W. Coburn, J. Wilms +4
We present pulse phase-resolved X-ray spectra of the high mass X-ray binary Vela X-1 using the Rossi X-ray Timing Explorer. We observed Vela X-1 in 1998 and 2000 with a total obser…
RHESSI as a Hard X-Ray Polarimeter
M. L. McConnell, J. M. Ryan, D. M. Smith +2
Polarization measurements of hard X-rays from solar flares can provide a direct handle on the extent to which the accelerated electrons are beamed, which, in turn, has important im…
Orbital and Super-Orbital Periods of 1E 1740.7-2942 and GRS 1758-258
D. M. Smith, W. A. Heindl, J. H. Swank
Five years of Rossi X-ray Timing Explorer (RXTE) observations of the Galactic black-hole candidates 1E 1740.7-2942 and GRS 1758-258 show a periodic modulation with amplitude 3-4% i…
Chandra High Resolution Camera Imaging of GRS 1758-258
W. A. Heindl, D. M. Smith
We observed the "micro-quasar" GRS 1758-258 four times with Chandra. Two HRC-I observations were made in 2000 September-October spanning an intermediate-to-hard spectral transition…
Discovery of GRB 020405 and its Late Red Bump
P. A. Price, S. R. Kulkarni, E. Berger +41
We present the discovery of GRB 020405 made with the Inter-Planetary Network (IPN). With a duration of 60 s, the burst appears to be a typical long duration event. We observed the…
The Faint Optical Afterglow and Host Galaxy of GRB 020124: Implications for the Nature of Dark Gamma-Ray Bursts
E. Berger, S. R. Kulkarni, J. S. Bloom +24
We present ground-based optical observations of GRB 020124 starting 1.6 hours after the burst, as well as subsequent Very Large Array (VLA) and Hubble Space Telescope (HST) observa…
Magnetic Fields of Accreting X-Ray Pulsars with the Rossi X-Ray Timing Explorer
W. Coburn, W. A. Heindl, R. E. Rothschild +5
Using a consistent set of models, we parameterized the X-ray spectra of all accreting pulsars in the Rossi X-ray Timing Explorer database which exhibit Cyclotron Resonance Scatteri…
GRB 010921: Strong Limits on an Underlying Supernova from HST
P. A. Price, S. R. Kulkarni, B. P. Schmidt +24
GRB 010921 was the first HETE-2 GRB to be localized via its afterglow emission. The low-redshift of the host galaxy, z=0.451, prompted us to undertake intensive multi-color observa…
The Pulsar Wind Nebula in G11.2-0.3
Mallory S. E. Roberts, Cindy R. Tam, Victoria M. Kaspi +5
We present an X-ray and radio study of the wind nebula surrounding the central pulsar PSR J1811-1925 in the supernova remnant G11.2-0.3. Using high resolution data obtained with th…
Imaging the disk around the luminous young star LkHalpha 101 with infrared interferometry
P. G. Tuthill, J. D. Monnier, W. C. Danchi +2
The Herbig Ae/Be star LkHalpha 101 has been imaged at high angular resolution at a number of wavelengths in the near-infrared (from 1 to 3 microns) using the Keck 1 Telescope, and…
Spectral analysis of 35 GRBs/XRFs observed with HETE-2/FREGATE
C. Barraud, J-F. Olive, J. P. Lestrade +27
We present a spectral analysis of 35 GRBs detected with the HETE-2 gamma-ray detectors (the FREGATE instrument) in the energy range 7-400 keV. The GRB sample analyzed is made of GR…
The distant Type Ia supernova rate
R. Pain, S. Fabbro, M. Sullivan +26
We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which su…
An EUV Study of the Intermediate Polar EX Hydrae
Kunegunda E. Belle, Steve B. Howell, Martin Sirk +1
On 2000 May 5, we began a large multi-wavelength campaign to study the intermediate polar, EX Hydrae. The simultaneous observations from six satellites and four telescopes were cen…
New Tests of Magnetospheric Accretion in T Tauri Stars
Christopher M. Johns-Krull, April D. Gafford
We examine 3 analytic theories of magnetospheric accretion onto classical T Tauri stars under the assumption that the magnetic field strength does not vary appreciably from star to…
Measuring the Boundary Layer and Inner Accretion Disk Temperatures for WX Ceti During Superoutburst
S. B. Howell, R. Fried, P. Szkody +2
We obtained EUV photometry, optical spectroscopy, and multi-color optical photometry for WX Cet during its 1998 November superoutburst. WX Cet is only the second short-period, low…
Subluminous Stars among the FAUST UV sources toward OPHIUCHUS
L. Formiggini, N. Brosch, E. Almoznino +2
We present results of an analysis of a UV image in the direction of Ophiuchus, obtained with the FAUST instrument. The image contains 228 UV sources. Most of these were identified…
GRB 011121: A Massive Star Progenitor
P. A. Price, E. Berger, D. E. Reichart +29
Of the cosmological gamma-ray bursts, GRB 011121 has the lowest redshift, z=0.36. More importantly, the multi-color excess in the afterglow detected in the Hubble Space Telescope (…
Detection of a supernova signature associated with GRB 011121
J. S. Bloom, S. R. Kulkarni, P. A. Price +20
Using observations from an extensive monitoring campaign with the Hubble Space Telescope we present the detection of an intermediate-time flux excess which is redder in color relat…
Evidence for a Fast Decline in the Progenitor Population of Gamma Ray Bursts and the Nature of their Origin
B. E. Stern, J-L. Atteia, K. Hurley
We show that the source population of long gamma-ray bursts (GRBs) has declined by at least a factor of 12 (at the 90% confidence level) since the early stages of the Universe ($z…