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19922026
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336 papers · 1 filter

astro-ph2000★ 19 cited

The change in the inclination angle of the non-eclipsing binary SS Lacertae: future eclipses

Guillermo Torres

Eclipses in the 14.4-day period double-lined binary SS Lac were observed photographically and visually early in the 20th century, but stopped some 50 or 60 years ago. This has been…

quant-ph2000★ 1.9k cited

Storage of light in atomic vapor

D. F. Phillips, A. Fleischhauer, A. Mair +2

We report an experiment in which a light pulse is decelerated and trapped in a vapor of Rb atoms, stored for a controlled period of time, and then released on demand. We accomplish…

astro-ph2000★ 102 cited

[O II] as a tracer of current star formation

Rolf A. Jansen, Marijn Franx, Daniel Fabricant

[O II] lambda 3727 Angstrom is often used as a tracer of star formation at intermediate redshifts (z > 0.4), where Halpha is not easily observed. We use the spectrophotometric data…

astro-ph2000★ 38 cited

SW Sextantis in an excited, low state

Paul J Groot, Rene' G. M. Rutten, Jan van Paradijs

We present low-resolution spectrophotometric optical observations of the eclipsing nova-like cataclysmic variable SW Sex, the prototype of the SW Sex stars. We observed the system…

astro-ph2000★ 240 cited

New Evidence for Black Hole Event Horizons from Chandra

Michael R. Garcia, Jeffrey E. McClintock, Ramesh Narayan +2

Previously we claimed that Black Hole X-ray Novae (BHXN) in quiescence are much less luminous than equivalent Neutron Star X-ray Novae (NSXN). This claim was based on the quiescent…

cond-mat2000★ 426 cited

Dark-Bright Solitons in Inhomogeneous Bose-Einstein Condensates

Th. Busch, J. R. Anglin

We investigate dark-bright vector solitary wave solutions to the coupled non-linear Schrödinger equations which describe an inhomogeneous two-species Bose-Einstein condensate. Whil…

astro-ph2000★ 3.3k cited

Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant

W. L. Freedman, B. F. Madore, B. K. Gibson +12

We present here the final results of the Hubble Space Telescope Key Project to measure the Hubble constant. We summarize our method, the results and the uncertainties, tabulate our…

astro-ph2000★ 12 cited

The X-ray emission of 3C 346 and its environment

D. M. Worrall, M. Birkinshaw

We present a detailed spectral and spatial analysis of the X-ray properties of the compact and unusual radio galaxy 3C 346, combining information from ROSAT and ASCA. The dominant…

astro-ph2000★ 567 cited

ISO spectroscopy of circumstellar dust in 14 Herbig Ae/Be systems: towards an understanding of dust processing

G. Meeus, L. B. F. M. Waters, J. Bouwman +3

We present Infrared Space Observatory (ISO) spectra of fourteen isolated Herbig Ae/Be (HAEBE) stars, to study the characteristics of their circumstellar dust. These spectra show la…

astro-ph2000★ 12 cited

Far Ultraviolet Spectra of B Stars near the Ecliptic

C. Morales, V. Orozco, J. F. Gomez +7

Spectra of B stars in the wavelength range of 911-1100 A have been obtained with the EURD spectrograph onboard the Spanish satellite MINISAT-01 with ~5 A spectral resolution. IUE s…

astro-ph2000★ 66 cited

Accretion onto nearby supermassive black holes: Chandra constraints on the dominant cluster galaxy NGC 6166

T. Di Matteo, R. M. Johnstone, S. W. Allen +1

Chandra observations of low-luminosity supermassive black holes in nearby elliptical galaxies provide tight limits on both their nuclear luminosities and on their Bondi accretion r…

astro-ph2000★ 142 cited

Structure of the X-ray Emission from the Jet of 3C 273

H. L. Marshall, D. E. Harris, J. P. Grimes +12

We present images from five observations of the quasar 3C 273 with the Chandra X-ray Observatory. The jet has at least four distinct features which are not resolved in previous obs…

astro-ph2000★ 170 cited

Galaxy Cluster Gas Mass Fractions from Sunyaev-Zel'dovich Effect Measurements: Constraints on Omega_M

Laura Grego, John E. Carlstrom, Erik D. Reese +5

Using sensitive centimeter-wave receivers mounted on the Owens Valley Radio Observatory and Berkeley-Illinois-Maryland-Association millimeter arrays, we have obtained interferometr…

astro-ph2000

The Formation of Black-Hole X-Ray Transients

V. Kalogera

Studies of the observed characteristics of black-hole (BH) X-ray binaries can be provide us with valuable information about the process of BH formation. In this paper I address som…

astro-ph2000★ 20 cited

How astrophysical mean field dynamos can circumvent existing quenching constraints

Eric G. Blackman, George B. Field

Mean field dynamo theory is a leading candidate to explain the observed large scale magnetic fields of galaxies and stars. However, controversy arises over the extent of premature…

quant-ph2000★ 35 cited

Resonantly enhanced nonlinear optics in semiconductor quantum wells: An application to sensitive infrared detection

S. F. Yelin, P. R. Hemmer

A novel class of coherent nonlinear optical phenomena, involving induced transparency in quantum wells, is considered in the context of a particular application to sensitive long-w…

astro-ph2000★ 104 cited

The halo model and numerical simulations

Martin White, Lars Hernquist, Volker Springel

Recently there has been a lot of attention focussed on a virialized halo-based approach to understanding the properties of the matter and galaxy power spectrum. A key ingredient in…

astro-ph2000★ 17 cited

Numerical Analysis of Magnetic Field Amplification by Turbulence

Hongsong Chou

We apply a Fourier spectral numerical method to 3D incompressible MHD turbulence with a magnetic Prandtl number . We examine the processes by which an initially weak, la…

astro-ph2000★ 423 cited

Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4

Rupert A. C. Croft, David H. Weinberg, Mike Bolte +5

We measure the filling factor, correlation function, and power spectrum of transmitted flux in a large sample of Lya forest spectra, comprised of 30 Keck HIRES spectra and 23 Keck…

astro-ph2000★ 130 cited

Evidence for a Supermassive Black Hole in the S0 Galaxy NGC 3245

A. J. Barth, M. Sarzi, H. -W. Rix +3

The S0 galaxy NGC 3245 contains a circumnuclear disk of ionized gas and dust with a radius of 1.1" (110 pc), making it an ideal target for dynamical studies with the Hubble Space T…

astro-ph2000★ 40 cited

The DIRECT Project: Catalogs of Stellar Objects in Nearby Galaxies. I. The Central Part of M33

L. M. Macri, K. Z. Stanek, D. D. Sasselov +2

The DIRECT project aims to determine direct distances to two important galaxies in the cosmological distance ladder -- M31 and M33 -- using detached eclipsing binaries (DEBs) and C…

astro-ph2000★ 73 cited

A New Formation Channel for Double Neutron Stars Without Recycling: Implications for Gravitational Wave Detection

K. Belczynski, V. Kalogera

We report on a new evolutionary path leading to the formation of close double neutron stars (NS), with the unique characteristic that none of the two NS ever had the chance to be r…

astro-ph2000★ 67 cited

Sunyaev-Zel'dovich Effect Imaging of Massive Clusters of Galaxies at Redshift z > 0.8

Marshall Joy, Samuel LaRoque, Laura Grego +6

We present Sunyaev-Zel'dovich Effect (SZE) imaging observations of three distant (z > 0.8) and highly X-ray luminous clusters of galaxies, Cl1226+33, Cl0152-13 and MS1054-03. Two o…

astro-ph2000★ 159 cited

The Coalescence Rate of Double Neutron Star Systems

V. Kalogera, R. Narayan, D. N. Spergel +1

We estimate the coalescence rate of close binaries with two neutron stars (NS) and discuss the prospects for the detection of NS-NS inspiral events by ground-based gravitational-wa…