Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- California Institute of TechnologyUS2.6k papers
- Centre National de la Recherche ScientifiqueFR2k papers
- Massachusetts Institute of TechnologyUS1.9k papers
- University of FloridaUS1.8k papers
- Carnegie Mellon UniversityUS1.7k papers
- Princeton UniversityUS1.7k papers
- University of RochesterUS1.7k papers
- Purdue University West LafayetteUS1.6k papers
- Johns Hopkins UniversityUS1.6k papers
- University of Maryland, College ParkUS1.6k papers
- The Ohio State UniversityUS1.6k papers
- University of California, Santa BarbaraUS1.6k papers
95 papers · 2 filters
Spitzer Observations of 3C Quasars and Radio Galaxies: Mid-Infrared Properties of Powerful Radio Sources
K. Cleary, C. R. Lawrence, J. A. Marshall +2
We have measured mid-infrared radiation from an orientation-unbiased sample of 3CRR galaxies and quasars at redshifts 0.4 < z < 1.2 with the IRS and MIPS instruments on the Spitzer…
The distribution of silicate strength in Spitzer spectra of AGNs and ULIRGs
Lei Hao, D. W. Weedman, H. W. W. Spoon +4
A sample of 196 AGNs and ULIRGs observed by the Infrared Spectrograph (IRS) on Spitzer is analyzed to study the distribution of the strength of the 9.7 micron silicate feature. Ave…
Simulations of the Disk-Jet Interaction in GRS 1915+105 and Other Systems
David M. Rothstein
After an X-ray binary experiences a transient jet ejection, it undergoes a phase in which its X-ray light curve is dominated, for some time, by thermal emission from an accretion d…
Infrared Counterparts to Chandra X-Ray Sources in the Antennae
D. M. Clark, S. S. Eikenberry, B. R. Brandl +7
We use deep J and Ks images of the Antennae (NGC 4038/9) obtained with WIRC on the Palomar 200-inch telescope, together with the Chandra X-ray source list of Zezas et al. (2002a),…
Magnetic Hydrogen Atmosphere Models and the Neutron Star RX J1856.5-3754
Wynn C. G. Ho, David L. Kaplan, Philip Chang +2
RX J1856.5-3754 is one of the brightest nearby isolated neutron stars, and considerable observational resources have been devoted to it. However, current models are unable to satis…
Formation of Double Compact Objects
V. Kalogera, K. Belczynski, C. Kim +2
Current observations of double neutron stars provide us with a wealth of information that we can use to investigate their evolutionary history and the physical conditions of neutro…
Direct imaging with highly diluted apertures. I. Field of view limitations
O. Lardiere, F. Martinache, F. Patru
Future optical interferometric instrumentation mainly relies on the availability of an efficient cophasing system: once available, what has so far postponed the relevance of direct…
Infrared Molecular Starburst Fingerprints in Deeply Obscured (U)LIRG Nuclei
F. Lahuis, H. W. W. Spoon, A. G. G. M. Tielens +6
High resolution spectra of the Spitzer Space Telescope show vibration-rotation absorption bands of gaseous C2H2, HCN, and CO2 molecules toward a sample of deeply obscured (U)LIRG n…
Precision Masses of the low-mass binary system GJ 623
Frantz Martinache, James P. Lloyd, Michael J. Ireland +2
We have used Aperture Masking Interferometry and Adaptive Optics (AO) at the Palomar 200'' to obtain precise mass measurements of the binary M dwarf GJ 623. AO observations spread…
Mid-IR Galaxy Classification Based on Silicate Obscuration and PAH Equivalent Width
H. W. W. Spoon, J. A. Marshall, J. R. Houck +5
We present a new diagnostic diagram for mid-infrared spectra of infrared galaxies based on the equivalent width of the 6.2 micron PAH emission feature and the strength of the 9.7 m…
Deep Mid-Infrared Silicate Absorption as a Diagnostic of Obscuring Geometry Toward Galactic Nuclei
N. A. Levenson, M. M. Sirocky, L. Hao +4
The silicate cross section peak near 10um produces emission and absorption features in the spectra of dusty galactic nuclei observed with the Spitzer Space Telescope. Especially in…
A Post-AGB Star in the Small Magellanic Cloud Observed with the Spitzer Infrared Spectrograph
Kathleen E. Kraemer, G. C. Sloan, J. Bernard-Salas +3
We have observed an evolved star with a rare combination of spectral features, MSX SMC 029, in the Small Magellanic Cloud (SMC) using the low-resolution modules of the Infrared Spe…
Spitzer spectroscopy of carbon stars in the Small Magellanic Cloud
Eric Lagadec, Albert A. Zijlstra, G. C. Sloan +12
We present Spitzer Space telescope spectroscopic observations of 14 carbon-rich AGB stars in the Small Magellanic Cloud. SiC dust is seen in most of the carbon-rich stars but it is…
Wave Modes in the Magnetospheres of Pulsars and Magnetars
Chen Wang, Dong Lai
We study the wave propagation modes in the relativistic streaming pair plasma of the magnetospheres of pulsars and magnetars, focusing on the effect of vacuum polarization. We show…
Large Non-Gaussianities in Single Field Inflation
Xingang Chen, Richard Easther, Eugene A. Lim
We compute the 3-point correlation function for a general model of inflation driven by a single, minimally coupled scalar field. Our approach is based on the numerical evaluation o…
Dynamics of Linear Perturbations in f(R) Gravity
Rachel Bean, David Bernat, Levon Pogosian +2
We consider predictions for structure formation from modifications to general relativity in which the Einstein-Hilbert action is replaced by a general function of the Ricci scalar.…
Spitzer Mid-infrared Upper Limits on Anomalous X-Ray Pulsars 1E 1048.1-5937, 1RXS J170849-400910, and XTE J1810-197
Z. Wang, V. M. Kaspi, S. J. U. Higdon
We report on mid-infrared imaging observations of the anomalous X-ray pulsars (AXPs) 1E 1048.1-5937, 1RXS J170849-400910, and XTE J1810-197. The observations were carried out at 4.…
Negative Energy and Angular Momentum Modes of Thin Accretion Disks
L. Zhang, R. V. E. Lovelace
This work derives the linearized equations of motion, the Lagrangian density, the Hamiltonian density, and the canonical angular momentum density for general perturbations [$\propt…
Detection of the 205 um [NII] Line from the Carina Nebula
T. E. Oberst, S. C. Parshley, G. J. Stacey +7
We report the first detection of the 205 um 3P1 - 3P0 [NII] line from a ground-based observatory using a direct detection spectrometer. The line was detected from the Carina star f…
Cornell Caltech Atacama Telescope (CCAT): a 25 m aperture telescope above 5000 m altitude
Thomas A. Sebring, Riccardo Giovanelli, Simon Radford +1
Cornell, California Institute of Technology (Caltech), and Jet Propulsion Lab (JPL) have joined together to study development of a 25 meter sub-millimeter telescope (CCAT) on a hig…
The phase-dependent Infrared brightness of the extrasolar planet upsilon Andromedae b
J. Harrington, B. Hansen, S. Luszcz +5
The star upsilon Andromeda is orbited by three known planets, the innermost of which has an orbital period of 4.617 days and a mass at least 0.69 that of Jupiter. This planet is cl…
Accretion to Stars with Non-dipole Magnetic Fields
M. Long, M. M. Romanova, R. V. E. Lovelace
Disc accretion to a rotating star with a non-dipole magnetic field is investigated for the first time in full three-dimensional (3D) magnetohydrodynamic (MHD) simulations. We inves…
The Transition from Atomic to Molecular Hydrogen in Interstellar Clouds: 21cm Signature of the Evolution of Cold Atomic Hydrogen in Dense Clouds
Paul F. Goldsmith, Di Li, Marko Krco
We have investigated the time scale for formation of molecular clouds by examining the conversion of HI to H2 using a time-dependent model. H2 formation on dust grains and cosmic r…
Unravelling Temporal Variability in Saturn's Spiral Density Waves: Results and Predictions
Matthew S. Tiscareno, Philip D. Nicholson, Joseph A. Burns +2
We describe a model that accounts for the complex morphology of spiral density waves raised in Saturn's rings by the co-orbital satellites, Janus and Epimetheus. Our model may be c…