output
19922026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

Showing 1999Show all

37 papers · 1 filter

astro-ph1999★ 12 cited

Precise Interplanetary Network Localization of the Bursting Pulsar GRO J1744-28

K. Hurley, C. Kouveliotou, T. Cline +8

We analyze 426 observations of the bursting pulsar GRO J1744-28 by Ulysses and BATSE. Triangulating each burst, and statistically combining the triangulation annuli, we obtain a 3…

astro-ph1999★ 7 cited

FAUST Observations in the Fourth Galactic Quadrant

N. Brosch, A. Brook, L. Wisotzki +4

We analyze UV observations with FAUST of four sky fields in the general direction of the fourth Galactic quadrant, in which we detect 777 UV sources. This is ~50% more than detecte…

astro-ph1999

EUVE Observations of clusters of galaxies: Virgo and M87

Thomas W. Berghoefer, Stuart Bowyer, Eric Korpela

We present results of a re-analysis of archival EUVE data of the central region of the Virgo cluster. We employ the new analysis method developed by Bowyer, Berghöfer & Korpela (19…

astro-ph1999★ 21 cited

Gamma-Ray Burst Arrival-Time Localizations: Simultaneous Observations by Ulysses, Pioneer Venus Orbiter, SIGMA, WATCH, and PHEBUS

K. Hurley, J. Laros, S. Brandt +11

Between the launch of the Ulysses spacecraft in 1990 October and the entry of Pioneer Venus Orbiter (PVO) into the atmosphere of Venus in 1992 October, concurrent coverage by Ulyss…

astro-ph1999★ 15 cited

The 4.5 +/- 0.5 Soft Gamma Repeaters in Review

K. Hurley

Four Soft Gamma Repeaters (SGRs) have now been identified with certainty, and a fifth has possibly been detected. I will review their X-ray and gamma-ray properties in both outburs…

astro-ph1999★ 2 cited

A Gamma-Ray Burst Bibliography, 1973-1999

K. Hurley

On the average, one new publication on cosmic gamma-ray bursts enters the literature every day. The total number now exceeds 4100. I present here a complete bibliography which can…

astro-ph1999★ 24 cited

Simultaneous Observations of GRS 1758-258 in 1997 by VLA, IRAM, SEST, RXTE and OSSE: Spectroscopy and Timing

D. Lin, I. A. Smith, E. P. Liang +6

We report the results of our multi-wavelength observations of GRS 1758-258 made in August 1997. The energy bands include radio, millimeter, X-ray, and gamma-ray. The observations e…

astro-ph1999★ 71 cited

EUV Emission in Abell 1795, Abell 2199, and the Coma Cluster

Stuart Bowyer, Thomas Berghoefer, Eric Korpela

We report new EUV data on the cluster of galaxies Abell 1795. These data were taken well away from a detector defect which could have compromised earlier results on this cluster. O…

astro-ph1999★ 32 cited

Hard Burst Emission from the Soft Gamma Repeater SGR 1900+14

Peter M. Woods, Chryssa Kouveliotou, Jan van Paradijs +7

We present evidence for burst emission from SGR 1900+14 with a power-law high energy spectrum extending beyond 500 keV. Unlike previous detections of high energy photons during bur…

astro-ph1999★ 20 cited

ASCA Observation of the quiescent X-ray counterpart to SGR1627-41

K. Hurley, T. Strohmayer, P. Li +9

We present a 2 - 10 keV ASCA observation of the field around the soft gamma repeater SGR1627-41. A quiescent X-ray source was detected in this observation whose position was consis…

astro-ph1999★ 120 cited

Pinwheel nebula around WR 98a

J. D. Monnier, P. G. Tuthill, W. C. Danchi

We present the first near-infrared images of dusty Wolf-Rayet star WR 98a. Aperture masking interferometry has been utilized to recover images at the diffraction-limit of the Keck-…

astro-ph1999★ 1 cited

Prompt Optical Emission from Gamma-ray Bursts

Robert Kehoe, Carl Akerlof, Richard Balsano +19

The Robotic Optical Transient Search Experiment (ROTSE) seeks to measure contemporaneous and early afterglow optical emission from gamma-ray bursts (GRBs). The ROTSE-I telescope ar…

astro-ph1999

Discovery of kHz Fluctuations in Centaurus X-3: Evidence for Photon Bubble Oscillations (PBO) and Turbulence in a High Mass X-ray Binary Pulsar

J. Garrett Jernigan, Richard I. Klein, Jonathan Arons

We report the discovery of kHz fluctuations, including quasi-periodic oscillations (QPO) at ~330 Hz and ~760 Hz and a broadband kHz continuum in the power density spectrum of the h…

astro-ph1999★ 45 cited

Observations of a possible new soft gamma repeater, SGR1801-23

T. Cline, D. D. Frederiks, S. Golenetskii +4

We report on two observations of a soft bursting source in 1997 June, whose time histories and energy spectra are consistent with those of the soft gamma repeaters. The source can…

astro-ph1999★ 15 cited

Far Ultraviolet Absolute Flux of alpha Virginis

Carmen Morales, Joaquin Trapero, Jose F. Gomez +7

We present the far ultraviolet spectrum of alpha Virginis taken with EURD spectrograph on-board MINISAT-01. The spectral range covered is from ~900 to 1080 A with 5 A spectral reso…

astro-ph1999★ 12 cited

Diffuse Galactic Soft Gamma-Ray Emission

S. E. Boggs, R. P. Lin, S. Slassi-Sennou +2

The Galactic diffuse soft gamma-ray (30-800 keV) emission has been measured from the Galactic Center by the HIREGS balloon-borne germanium spectrometer to determine the spectral ch…

astro-ph1999★ 21 cited

Discovery of the Optical Transient of the Gamma Ray Burst 990308

Bradley E. Schaefer, J. A. Snyder, J. Hernandez +53

The optical transient of the faint Gamma Ray Burst 990308 was detected by the QUEST camera on the Venezuelan 1-m Schmidt telescope starting 3.28 hours after the burst. Our photomet…

astro-ph1999★ 11 cited

Integrating the BeppoSAX Gamma-Ray Burst Monitor into the 3rd Interplanetary Network

K. Hurley, M. Feroci, M. -N. Cinti +11

We have added the BeppoSAX Gamma-Ray Burst Monitor to the 3rd Interplanetary Network of burst detectors. We analyze 16 bursts whose positions are known to good accuracy from measur…

astro-ph1999★ 120 cited

Variable Spin-down in the Soft Gamma Repeater SGR 1900+14 and Correlations with Burst Activity

Peter M. Woods, Chryssa Kouveliotou, Jan van Paradijs +7

We have analyzed Rossi X-ray Timing Explorer Proportional Counter Array observations of the pulsed emission from SGR 1900+14 during September 1996, June - October 1998, and early 1…

astro-ph1999★ 1 cited

A reanalysis of EUV emission in clusters of galaxies

Stuart Bowyer, Thomas W. Berghoefer, Eric Korpela

We report a new analysis of diffuse EUV emission in clusters of galaxies. We find the cluster emission is strongly influenced by the variation of the telescope sensitivity over the…

astro-ph1999★ 44 cited

Where is SGR1806-20?

K. Hurley, C. Kouveliotou, T. Cline +4

We apply a statistical method to derive very precise locations for soft gamma repeaters using data from the interplanetary network. We demonstrate the validity of the method by der…

astro-ph1999★ 1 cited

Response to the Document ``Origin of the Extended EUV Emission from the Abell 2199 and Abell 1795 Clusters of Galaxies'' by Lieu, Mittaz, Bonamente, Durret and Kaastra

Stuart Bowyer, Thomas Berghoefer, Eric Korpela

Lieu, Mittaz, Bonamente, Durret and Kaastra have provided a document which claims to rebut the finding by Bowyer, Berghoefer and Korpela presented at the Ringburg Workshop (April 1…

astro-ph1999★ 31 cited

Evidence Against the Sciama Model of Radiative Decay of Massive Neutrinos

Stuart Bowyer, Eric J. Korpela, Jerry Edelstein +5

We report on spectral observations of the night sky in the band around 900 angstroms where the emission line in the Sciama model of radiatively decaying massive neutrinos would be…

astro-ph1999★ 38 cited

Long-Term X-ray Monitoring of 1E 1740.7-2942 and GRS 1758-258

D. S. Main, D. M. Smith, W. A. Heindl +4

We report on long-term observations of the Galactic-bulge black hole candidates 1E 1740.7-2942 and GRS 1758-258 with the Rossi X-Ray Timing Explorer. 1E 1740.7-2942 has been observ…