Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR4.4k papers
- University of Wisconsin–MadisonUS3.8k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.4k papers
- Lawrence Berkeley National LaboratoryUS3.4k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT3.4k papers
- Massachusetts Institute of TechnologyUS3.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT3.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT3.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT3.1k papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR3k papers
- Institute for High Energy PhysicsES3k papers
143 papers · 2 filters
An Accelerating Cosmology Without Dark Energy
G. Steigman, R. C. Santos, J. A. S. Lima
The negative pressure accompanying gravitationally-induced particle creation can lead to a cold dark matter (CDM) dominated, accelerating Universe (Lima et al. 1996) without requir…
Fermi LAT Observations of the Vela Pulsar
A. A. Abdo
The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Ar…
New Limits on the Ultra-high Energy Cosmic Neutrino Flux from the ANITA Experiment
ANITA collaboration, P. Gorham, P. Allison +40
We report initial results of the first flight of the Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence of a diffus…
The Black Hole Mass-Bulge Luminosity Relationship for Active Galactic Nuclei from Reverberation Mapping and Hubble Space Telescope Imaging
Misty C. Bentz, Bradley M. Peterson, Richard W. Pogge +1
We investigate the relationship between black hole mass and bulge luminosity for AGNs with reverberation-based black hole mass measurements and bulge luminosities from two-dimensio…
The Radius-Luminosity Relationship for Active Galactic Nuclei: The Effect of Host-Galaxy Starlight on Luminosity Measurements II. The Full Sample of Reverberation-Mapped AGNs
Misty C. Bentz, Bradley M. Peterson, Hagai Netzer +2
We present high-resolution HST images of all 35 AGNs with optical reverberation-mapping results, which we have modeled to create a nucleus-free image of each AGN host galaxy. From…
The Antarctic Impulsive Transient Antenna Ultra-high Energy Neutrino Detector Design, Performance, and Sensitivity for 2006-2007 Balloon Flight
ANITA collaboration, P. Gorham, P. Allison +40
We present a detailed report on the experimental details of the Antarctic Impulsive Transient Antenna (ANITA) long duration balloon payload, including the design philosophy and rea…
Redshifts and lens profile for the double quasar QJ 0158-4325
C. Faure, T. Anguita, A. Eigenbrod +5
We report on the redshift of the lensing galaxy and of the quasar QJ 0158-4325 and on the lens model of the system. A deep VLT/FORS2 spectrum and HST/NICMOS-F160W images are deconv…
Evolution of Dark Matter Phase-Space Density Distributions in Equal-Mass Halo Mergers
Ileana M. Vass, Stelios Kazantzidis, Monica Valluri +1
We use dissipationless N-body simulations to investigate the evolution of the true coarse-grained phase-space density distribution f(x,v) in equal-mass mergers between dark matter…
The Diffuse Supernova Neutrino Background is detectable in Super-Kamiokande
Shunsaku Horiuchi, John F. Beacom, Eli Dwek
The Diffuse Supernova Neutrino Background (DSNB) provides an immediate opportunity to study the emission of MeV thermal neutrinos from core-collapse supernovae. The DSNB is a power…
The Seventh Data Release of the Sloan Digital Sky Survey
K. Abazajian
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDS…
Interstellar Extinction and Long-Period Variables in the Galactic Center
M. Schultheis, K. Sellgren, S. Ramirez +4
We use the Spitzer IRAC catalogue of the Galactic Center (GC) point sources (Ramirez et al. 2008) and combine it with new isochrones (Marigo et al. 2008) to derive extinctions base…
Planets in Stellar Clusters Extensive Search. V. Search for planets and identification of 18 new variable stars in the old open cluster NGC 188
B. J. Mochejska, K. Z. Stanek, D. D. Sasselov +7
We have undertaken a long-term project, Planets in Stellar Clusters Extensive Search (PISCES), to search for transiting planets in open clusters. In this paper we present the resul…
The Origin of the 24-micron Excess in Red Galaxies
Kate Brand, John Moustakas, Lee Armus +11
Observations with the Spitzer Space Telescope have revealed a population of red-sequence galaxies with a significant excess in their 24-micron emission compared to what is expected…
Recombination Rate Coefficients for KLL Di-electronic Satellite Lines of Fe XXV and Ni XXVII
S. N. Nahar, J. Oelgoetz, A. K. Pradhan
The unified method for total electron-ion recombination is extended to study the dielectronic satellite (DES) lines. These lines, formed from radiative decay of autoionizing states…
On the importance of satellite lines to the He-like K ALPHA complex and the G ratio for calcium, iron, and nickel
J. Oelgoetz, C. J. Fontes, H. L. Zhang +2
New, more detailed calculations of the emission spectra of the He-like K ALPHA complex of calcium, iron and nickel have been carried out using data from both distorted-wave and R-m…
Pairing of Supermassive Black Holes in unequal-mass galaxy mergers
Simone Callegari, Lucio Mayer, Stelios Kazantzidis +4
We examine the pairing process of supermassive black holes (SMBHs) down to scales of 20-100 pc using a set of N-body/SPH simulations of binary mergers of disk galaxies with mass ra…
A Second Case of Variable Na I D Lines in a Highly-Reddened Type Ia Supernova (with Erratum)
S. Blondin, J. L. Prieto, F. Patat +5
(Original) Recent high-resolution spectra of the Type Ia SN 2006X have revealed the presence of time-variable and blueshifted Na I D features, interpreted by Patat et al. as origin…
The Spectral Energy Distributions of Red 2MASS AGN
Joanna Kuraszkiewicz, Belinda J. Wilkes, Gary Schmidt +7
We present infrared (IR) to X-ray spectral energy distributions (SEDs) for 44 red AGN selected from the 2MASS survey on the basis of their red J-K color (>2 mag) and later obse…
Direct Distance Measurement to the Dusty White Dwarf GD 362
Mukremin Kilic, John R. Thorstensen, Detlev Koester
We present trigonometric parallax observations of GD 362 obtained over seven epochs using the MDM 2.4m Hiltner Telescope. The existence of a dust disk around this possibly massive…
Old-Population Hypervelocity Stars from the Galactic Center: Limits from the SDSS
Juna A. Kollmeier, Andrew Gould, Gillian Knapp +1
We present limits on the ejection of old-population HVS from a sample of over 290,000 stars selected from the SDSS. We derive the speed at the solar circle from the measured positi…
Systematic Uncertainties in Black Hole Masses Determined from Single Epoch Spectra
Kelly D. Denney, Bradley M. Peterson, Matthias Dietrich +2
We explore the nature of systematic errors that can arise in measurement of black hole masses from single-epoch spectra of active galactic nuclei (AGNs) by utilizing the many epoch…
Time-series Spectroscopy and Photometry of the Pulsating Subdwarf B Star PG 1219+534 (KY UMa)
M. D. Reed, J. R. Eggen, S. L. Harms +7
We present observations and analysis of time-series spectroscopy and photometry of the pulsating subdwarf B star PG 1219+534 (KY UMa). Subdwarf B stars are blue horizontal branch s…
Fabry-Perot Absorption Line Spectroscopy of the Galactic Bar. I. Kinematics
Naseem Rangwala, T. B. Williams, K. Z. Stanek
We use Fabry-Perot absorption line imaging spectroscopy to measure radial velocities using the Ca II 8542 line in 3360 stars towards three lines of sight in the Milky Way's bar: Ba…
On the radiative efficiencies, Eddington ratios, and duty cycles of luminous high-redshift quasars
Francesco Shankar, Martin Crocce, Jordi Miralda-Escude' +2
We investigate the characteristic radiative efficiency ε, Eddington ratio λ, and duty cycle P_0 of high-redshift active galactic nuclei (AGN), drawing on measurements of the AGN lu…