output
19922026
Showing 2004 · astro-phShow all

14 papers · 2 filters

astro-ph2004★ 90 cited

The Optical and Ultraviolet Spectral Energy Distributions of Short Period Black Hole X-ray Transients in Outburst

R. I. Hynes

We compile optical and UV spectra of a sample of 'typical' short period black hole X-ray transients in outburst. We also survey determinations of interstellar extinction and distan…

astro-ph2004★ 108 cited

Dynamics of oscillating relativistic tori around Kerr black holes

O. Zanotti, J. A. Font, L. Rezzolla +1

We present a comprehensive numerical study of the dynamics of relativistic axisymmetric accretion tori with a power-law distribution of specific angular momentum orbiting in the ba…

astro-ph2004★ 42 cited

Spectroscopic confirmation of high-redshift supernovae with the ESO VLT

C. Lidman, D. A. Howell, G. Folatelli +44

We present VLT FORS1 and FORS2 spectra of 39 candidate high-redshift supernovae that were discovered as part of a cosmological study using Type Ia supernovae (SNe Ia) over a wide r…

astro-ph2004★ 10 cited

Fireballs, Flares and Flickering: A Semi-analytic, LTE, Explosive Model from Accretion Disks to Supernovae

K. J. Pearson, Keith Horne, Warren Skidmore

We derive simple analytic expressions for the continuum lightcurves and spectra of flaring and flickering events that occur over a wide range of astrophysical systems. We compare t…

astro-ph2004★ 4 cited

Correlated X-ray and Optical Variability in X-ray Binaries

R. I. Hynes

It has long been known that X-ray and optical/UV variability in active X-ray binaries is sometimes correlated. The expectation has been that this arises from rapid reprocessing of…

astro-ph2004

Observations of Gamma-Ray Outbursts from Galactic Microquasars

G. L. Case, M. L. Cherry, C. Fannin +3

The BATSE earth-occultation database provides nine years of coverage for 75 -ray sources in the energy range 35-1700 keV. For transient sources, this long time-base dataset make…

astro-ph2004★ 187 cited

Ultraviolet Extinction Properties in the Milky Way

Lynne A. Valencic, Geoffrey C. Clayton, Karl D. Gordon

We have assembled a homogeneous database of 417 ultraviolet (UV) extinction curves for reddened sightlines having International Ultraviolet Explorer (IUE) spectra. We have combined…

astro-ph2004★ 69 cited

Oscillations of vertically integrated relativistic tori -II. Axisymmetric modes in a Kerr spacetime

Pedro J. Montero, Luciano Rezzolla, Shin'ichirou Yoshida

This is the second of a series of papers investigating the oscillation properties of relativistic, non-selfgravitating tori orbiting around black holes. Extending the work done in…

astro-ph2004★ 135 cited

The Homogeneity of Interstellar Oxygen in the Galactic Disk

Stefan I. B. Cartledge, J. T. Lauroesch, David M. Meyer +1

We present an analysis of high resolution HST Space Telescope Imaging Spectrograph (STIS) observations of O I 1356 and H I Lyman-alpha absorption in 36 sight lines that probe a var…

astro-ph2004★ 35 cited

Nonlinear Development of the Secular Bar-mode Instability in Rotating Neutron Stars

Shangli Ou, Joel E. Tohline, Lee Lindblom

We have modelled the nonlinear development of the secular bar-mode instability that is driven by gravitational radiation-reaction (GRR) forces in rotating neutron stars. In the abs…

astro-ph2004★ 121 cited

Spectroscopic Observations and Analysis of the Peculiar SN 1999aa

G. Garavini, G. Folatelli, A. Goobar +55

We present an extensive new time-series of spectroscopic data of the peculiar SN 1999aa in NGC 2595. Our data set includes 25 optical spectra between -11 and +58 days with respect…

astro-ph2004★ 10 cited

Multi-Color Photometry of the 2001 Superoutburst of WZ sagittae

Steve B. Howell, Arne A. Hendon, Arlo U. Landolt

We present the results of U-band and multi-color photometry during the 2001 superoutburst of WZ Sagittae. Our 10 nights of U-band photometry span the time interval from HJD 2452118…

astro-ph2004★ 13 cited

Interstellar Polarization in M31

Geoffrey C. Clayton, Michael J. Wolff, Karl D. Gordon +3

The wavelength dependence of interstellar polarization due to dust in M31 has been observed along four sightlines. Only one sightline had been measured previously.The globular clus…

astro-ph2004★ 246 cited

Interstellar Carbon in Translucent Sightlines

U. J. Sofia, J. T. Lauroesch, D. M. Meyer +1

We report interstellar C II column densities or upper limits determined from weak absorption of the 2325.4029 A intersystem transition observed in six translucent sightlines with S…