14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Goddard Space Flight CenterUS361 papers
- Marshall Space Flight CenterUS357 papers
- Centre National de la Recherche ScientifiqueFR280 papers
- Max Planck Institute for Extraterrestrial PhysicsDE240 papers
- University of Maryland, College ParkUS239 papers
- Universities Space Research AssociationUS214 papers
- Stanford UniversityUS212 papers
- National Institute for AstrophysicsIT196 papers
- University of Rome Tor VergataIT184 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR179 papers
- University of PaduaIT178 papers
- Istituto Nazionale di Fisica Nucleare, Roma Tor VergataIT175 papers
28 papers · 1 filter
On the absence of shear from perfect Einstein rings and the stability of geometry
Richard Lieu
Concordance cosmology points to a Universe of zero mean curvature, due to the inflation mechanism which occurred soon after the Big Bang, while along a relatively small number of l…
Edgeworth Expansion of the Largest Eigenvalue Distribution Function of GUE Revisited
Leonard N. Choup
We derive expansions of the resolvent Rn(x;y;t)=(Qn(x;t)Pn(y;t)-Qn(y;t)Pn(x;t))/(x-y) of the Hermite kernel Kn at the edge of the spectrum of the finite n Gaussian Unitary Ensemble…
Late-time Kerr tails revisited
Lior M. Burko, Gaurav Khanna
The decay rate of late time tails in the Kerr spacetime have been the cause of numerous conflicting results, both analytical and numerical. In particular, there is much disagreemen…
The late-time tails in the Reissner-Nordström spacetime revisited
Carl J. Blaksley, Lior M. Burko
We propose that the late-time tail problem in the Reissner-Nordström (RN) spacetime is dual to a tail problem in the Schwarzschild spacetime with a different initial data set: at a…
A Magnetohydrodynamic Boost for Relativistic Jets
Yosuke Mizuno, Philip Hardee, Dieter H. Hartmann +2
We performed relativistic magnetohydrodynamic simulations of the hydrodynamic boosting mechanism for relativistic jets explored by Aloy & Rezzolla (2006) using the RAISHIN code. Si…
Association of mid-infrared solar plages with Calcium K line emissions and magnetic structures
R. Marcon, P. Kaufmann, A. M. Melo +2
Solar mid-IR observations in the 8-15 micrometer band continuum with moderate angular resolution (18 arcseconds) reveal the presence of bright structures surrounding sunspots. Thes…
Scaling Relations from Sunyaev-Zel'dovich Effect and Chandra X-ray measurements of high-redshift galaxy clusters
Massimiliano Bonamente, Marshall Joy, Samuel LaRoque +3
We present Sunyaev-Zel'dovich Effect (SZE) scaling relations for 38 massive galaxy clusters at redshifts 0.14<z0.89, observed with both the Cchandra X-ray Observatory and the centi…
Near-Infrared Interferometric, Spectroscopic, and Photometric Monitoring of T Tauri Inner Disks
J. A. Eisner, L. A. Hillenbrand, R. J. White +3
We present high angular resolution observations with the Keck Interferometer, high dispersion spectroscopic observations with Keck/NIRSPEC, and near-IR photometric observations fro…
Soft and hard X-ray excess emission in Abell 3112 observed with Chandra
M. Bonamente, J. Nevalainen, R. Lieu
Chandra ACIS-S observations of the galaxy cluster A3112 feature the presence of an excess of X-ray emission above the contribution from the diffuse hot gas, which can be equally we…
Age Problem in the Holographic Dark Energy Model
Hao Wei, Shuang Nan Zhang
In this note, we test the original holographic dark energy model with some old high redshift objects. The main idea is very simple: the universe cannot be younger than its constitu…
GRMHD/RMHD Simulations and Stability of Magnetized Spine-Sheath Relativistic Jets
Philip Hardee, Yosuke Mizuno, Ken-Ichi Nishikawa
A new general relativistic magnetohydrodynamics (GRMHD) code ``RAISHIN'' used to simulate jet generation by rotating and non-rotating black holes with a geometrically thin Keplaria…
High-Dispersion Optical Spectra of Nearby Stars Younger Than The Sun
R. J. White, J. M. Gabor, L. A. Hillenbrand
We present high-dispersion (R~16,000) optical (3900-8700 A) spectra of 390 stars obtained with the Palomar 60 inch telescope. The majority of stars observed are part of the Spitzer…
Multiepoch Radial Velocity Observations of L Dwarfs
Cullen H. Blake, David Charbonneau, Russel J. White +2
We report on the development of a technique for precise radial-velocity measurements of cool stars and brown dwarfs in the near infrared. Our technique is analogous to the Iodine (…
The Lorentz factor distribution and luminosity function of relativistic jets in AGNs
Yuan Liu, Shuang Nan Zhang
The observed apparent velocities and luminosities of the relativistic jets in AGNs are significantly different from their intrinsic values due to strong special relativistic effect…
Dynamics of Quintom and Hessence Energies in Loop Quantum Cosmology
Hao Wei, Shuang Nan Zhang
In the present work, we investigate the universe dominated by quintom or hessence energies in Loop Quantum Cosmology (LQC). Interestingly enough, we find that there are some stable…
Calibration of the GLAST Burst Monitor detectors
Andreas von Kienlin, Elisabetta Bissaldi, Giselher G. Lichti +15
The GLAST Burst Monitor (GBM) will augment the capabilities of GLAST for the detection of cosmic gamma-ray bursts by extending the energy range (20 MeV to > 300 GeV) of the Large A…
High-Energy Calibration of a BGO detector of the GLAST Burst Monitor
Andreas von Kienlin, Gerald J. Fishman, Michael S. Briggs +2
The understanding of the instrumental response of the GLAST Burst Monitor BGO detectors at energies above the energy range which is accessible by common laboratory radiation source…
Possible non-thermal nature of the soft-excess emission in the cluster of galaxies Sersic 159-03
N. Werner, J. S. Kaastra, Y. Takei +3
We present an analysis of new Suzaku data and archival data from XMM-Newton of the cluster of galaxies Sersic 159-03, which has a strong soft X-ray excess emission component. The S…
Interacting Energy Components and Observational Data
Hao Wei, Shuang Nan Zhang
In this note, we extend our previous work [Phys. Lett. B 644, 7 (2007), astro-ph/0609597], and compare eleven interacting dark energy models with different couplings to the observa…
The spin-flip phenomenon in supermassive black hole binary mergers
László Á. Gergely, Peter L. Biermann
Massive merging black holes will be the primary sources of powerful gravitational waves at low frequency, and will permit to test general relativity with candidate galaxies close t…
3D Relativistic Magnetohydrodynamic Simulations of Magnetized Spine-Sheath Relativistic Jets
Yosuke Mizuno, Philip Hardee, Ken-Ichi Nishikawa
Numerical simulations of weakly magnetized and strongly magnetized relativistic jets embedded in a weakly magnetized and strongly magnetized stationary or weakly relativistic (v =…
Discovery of a Transient X-ray Source in the Compact Stellar Nucleus of NGC 2403
Mihoko Yukita, Douglas A. Swartz, Roberto Soria +1
We report the discovery of an X-ray source coincident with the nuclear star cluster at the dynamical center of the nearby late-type spiral galaxy NGC 2403. The X-ray luminosity of…
Is the dependence of spectral index on luminosity real in optically selected AGN samples?
Sumin Tang, Shuang Nan Zhang, Philip F. Hopkins
We critically examine the dependence of spectral index on luminosity in optically selected AGN samples. An analysis of optically selected high-redshift quasars showed an anti-corre…
Towards a wave-extraction method for numerical relativity. V. Extracting the Weyl scalars in the quasi-Kinnersley tetrad from spatial data
Lior M. Burko
We extract the Weyl scalars and in the quasi-Kinnersley tetrad by finding initially the (gauge--, tetrad--, and background--independent) transverse quasi-Kinnersley fra…