Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.5k papers
- University of MichiganUS2.2k papers
- Brookhaven National LaboratoryUS2.2k papers
- University of California, BerkeleyUS2k papers
- Stony Brook UniversityUS2k papers
- Iowa State UniversityUS1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.9k papers
- University of ChicagoUS1.9k papers
- University of WashingtonUS1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- The University of TokyoJP1.8k papers
- University of ArizonaUS1.8k papers
52 papers · 2 filters
Gamma-Ray Bursts: the Four Crises
Marco Tavani
We discuss some open problems concerning the origin and the emission mechanism of gamma-ray bursts (GRBs) in light of recent developments. If GRBs originate at extragalactic distan…
Cosmological Tracking Solutions
Paul J. Steinhardt, Limin Wang, Ivaylo Zlatev
A substantial fraction of the energy density of the universe may consist of quintessence in the form of a slowly-rolling scalar field. Since the energy density of the scalar field…
Cosmological Signature of New Parity-Violating Interactions
Arthur Lue, Limin Wang, Marc Kamionkowski
Does Nature yield any manifestations of parity violation other than those observed in weak interactions? A map of the cosmic microwave background (CMB) temperature and polarization…
LS Peg: A Low-Inclination SW Sextantis-Type Cataclysmic Binary with High-Velocity Balmer Emission Line Wings
C. J. Taylor, J. R. Thorstensen, J. Patterson
We present time-resolved spectroscopy and photometry of the bright cataclysmic variable LS Peg (= S193). The Balmer lines exhibit broad, asymmetric wings Doppler-shifted by about 2…
ROSAT HRI Detection of the 16 ms Pulsar PSR J0537-6910 Inside SNR N157B
Q. Daniel Wang, E. V. Gotthelf
Based on a deep ROSAT HRI observation, we have detected a pulsed signal in the 0.1-2 keV band from PSR J0537-6910 --- the recently discovered pulsar associated with the supernova r…
Gamma-Ray Bursts and the Fireball Model
Tsvi Piran
Gamma-ray bursts (GRBs) have puzzled astronomers since their accidental discovery in the late sixties. The BATSE detector on the COMPTON-GRO satellite has been detecting one burst…
Photofluid Instabilities of Hot Stellar Envelopes
Edward A. Spiegel, Louis Tao
Beginning from a relatively simple set of dynamical equations for a fluid permeated by a radiative field strong enough to produce significant forces, we find the structure of plane…
Particle Aggregation in a turbulent Keplerian flow
A. Bracco, P. H. Chavanis, A. Provenzale +1
In the problem of planetary formation one seeks a mechanism to gather small solid particles together into larger accumulations of solid matter. Here we describe a scenario in which…
Weak Lensing by Large-Scale Structure with the FIRST Radio Survey
A. Refregier, S. T. Brown, M. Kamionkowski +5
The coherent image distortions induced by weak gravitational lensing can be used to measure the power spectrum of density inhomogeneities in the universe. We present our on-going e…
Multifrequency observations of XTE J0421+560/CI Cam in outburst
F. Frontera, M. Orlandini, L. Amati +9
We report on two X-ray observations of the transient source XTE J0421+560 performed by BeppoSAX, and on a series of observations performed by the 0.7m Teramo-Normale Telescope. Out…
EUVE J0425.6-5714: A Newly Discovered AM Herculis Star
J. P. Halpern, K. M. Leighly, H. L. Marshall +2
We detected a new AM Her star serendipitously in a 25 day observation with the EUVE satellite. A coherent period of 85.82 min is present in the EUVE Deep Survey imager light curve…
Scaling Regimes in the Distribution of Galaxies
G. Murante, A. Provenzale, E. A. Spiegel +1
If we treat the galaxies in published redshift catalogues as point sets, we may determine the generalized dimensions of such sets by standard means, outlined here. For galaxy separ…
Broad-band X-Ray Spectra of the Black Hole Candidate GRO J1655-40
John A. Tomsick, Philip Kaaret, Richard A. Kroeger +1
We present broad-band (2 keV to 2 MeV) X-ray spectra of GRO J1655-40, a luminous X-ray transient and occasional source of relativistic radio jets, obtained with RXTE and OSSE. In o…
Structure and Kinematics of the Interstellar Medium in front of SN1987A
J. Xu, A. P. S. Crotts
High resolution (10 km/s) [N II] echelle spectra, sampled every 13 arcsec in a 6 arcmin by 6 arcmin region around SN1987A were obtained on the CTIO 4m telescope. The map shows a co…
The Discovery and Broad-band Follow-up of the Transient Afterglow of GRB 980703
J. S. Bloom, D. A. Frail, S. R. Kulkarni +14
We report on the discovery of the radio, infrared and optical transient coincident with an X-ray transient proposed to be the afterglow of GRB 980703. At later times when the trans…
1H0419-577: A "two-state" soft X-ray Seyfert galaxy
M. Guainazzi, A. Comastri, G. M. Stripe +8
In this paper we report on the first simultaneous optical and X-ray (Beppo-SAX) observations of the radio-quiet AGN 1H0419-577. The optical spectrum clearly leads us to classify th…
New Constraint on Open Cold-Dark-Matter Models
Ali Kinkhabwala, Marc Kamionkowski
We calculate the large-angle cross-correlation between the cosmic-microwave-background (CMB) temperature and the x-ray-background (XRB) intensity expected in an open Universe with…
New Tests of Inflation
Marc Kamionkowski
Slow-roll inflation generically makes several predictions: a flat Universe, primordial adiabatic density perturbations, and a stochastic gravity-wave background. Each inflation mod…
The First Space-Based Gravitational-Wave Detectors
R. R. Caldwell, Marc Kamionkowski, Leven Wadley
Gravitational waves provide a laboratory for general relativity and a window to energetic astrophysical phenomena invisible with electromagnetic radiation. Several terrestrial dete…
Gamma-Ray Burst 980329 and its X-Ray Afterglow
J. J. M. in 't Zand, L. Amati, L. A. Antonelli +16
GRB 980329 is the brightest gamma-ray burst detected so far with the Wide Field Cameras aboard BeppoSAX, both in gamma-rays and X-rays. With respect to its fluence (2.6 X 10**-5 er…
A Hidden Broad-Line Region in the Weak Seyfert 2 Galaxy NGC 788
Laura E. Kay, Edward C. Moran
We have detected a broad H alpha emission line in the polarized flux spectrum of the Seyfert 2 galaxy NGC 788, indicating that it contains an obscured Seyfert 1 nucleus. While such…
A Cluster of Low-Redshift Lyman-alpha Clouds toward PKS 2155-304. I. Limits on Metals and D/H
J. Michael Shull, Steven V. Penton, John T. Stocke +4
We report observations from the Hubble Space Telescope (HST) and the VLA on the galactic environment, metallicity, and D/H in strong low-redshift Lya absorption systems toward the…
Weakly Nonlinear Clustering for Arbitrary Expansion Histories
M. Kamionkowski, A. Buchalter
Bouchet et al. (1992) showed that in an open or closed Universe with only pressureless matter, gravitational instability from Gaussian initial conditions induces a normalized skewn…
X-ray Observations of the Seyfert galaxy LB 1727 (1H 0419-577)
T. J. Turner, I. M. George, K. Nandra +5
We discuss the properties of the Seyfert 1.5 galaxy LB 1727, also known as 1H 0419-577, from X-ray observations obtained by ASCA and ROSAT along with optical observations from earl…