995 citations
- Catholic University of AmericaUS766 papers
- Goddard Space Flight CenterUS389 papers
- Centre National de la Recherche ScientifiqueFR376 papers
- University of Maryland, College ParkUS324 papers
- A. Alikhanyan National LaboratoryAM309 papers
- University of VirginiaUS306 papers
- Carnegie Mellon UniversityUS298 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR294 papers
- Florida State UniversityUS292 papers
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- California Institute of TechnologyUS288 papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT288 papers
11 papers · 1 filter
The outburst triggered by the Deep Impact collision with Comet Tempel 1
Sergei I. Ipatov, Michael F. A'Hearn
Time variations in velocities and relative amount of observed particles (mainly icy particles with diameter d<3 μm) ejected from Comet 9P/Tempel 1 are studied based on analysis of…
Testing the Paradigm that Ultraluminous X-ray Sources as a Class Represent Accreting Intermediate-Mass Black Holes
C. T. Berghea, K. A. Weaver, E. J. M. Colbert +1
To test the idea that ultraluminous X-ray sources (ULXs) in external galaxies represent a class of accreting intermediate-mass black holes (IMBHs), we have undertaken a program to…
Intrinsic Absorption Properties in Active Galaxies Observed with the Far Ultraviolet Spectroscopic Explorer
Jay P. Dunn, D. Michael Crenshaw, S. B. Kraemer +1
In a continuing survey of active galactic nuclei observed by the Far Ultraviolet Spectroscopic Explorer, we provide a deeper analysis of intrinsic absorption features found in 35 o…
Emission lines of Fe X in active region spectra obtained with the Solar Extreme-ultraviolet Research Telescope and Spectrograph
F P Keenan, D B Jess, K M Aggarwal +3
Fully relativistic calculations of radiative rates and electron impact excitation cross sections for Fe X are used to derive theoretical emission-line ratios involving transitions…
The Peculiar Volatile Composition of Comet 8P/Tuttle: A Contact Binary of Chemically Distinct Cometesimals?
B. P. Bonev, M. J. Mumma, Y. L. Radeva +3
We report measurements of eight native (i.e., released directly from the comet nucleus) volatiles (H2O, HCN, CH4, C2H2, C2H6, CO, H2CO, and CH3OH) in comet 8P/Tuttle using NIRSPEC…
Transition-Region Velocity Oscillations Observed by EUNIS-06
D. B. Jess, D. M. Rabin, R. J. Thomas +3
Spectroscopic measurements of AR NOAA 10871, obtained with the Extreme Ultraviolet Normal Incidence Spectrograph (EUNIS) sounding rocket instrument on 2006 April 12, reveal velocit…