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
14 papers · 2 filters
FUSE Observations of Galactic and Intrinsic Absorption in the Spectrum of the Seyfert 1 Galaxy 2MASX J21362313-6224008
Massimiliano Bonamente, W. Van Dyke Dixon
We present the far-ultraviolet spectrum of the Seyfert 1 galaxy 2MASX J21362313-6224008 obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE). The spectrum features absor…
Non-thermal hard X-ray emission in galaxy clusters observed with the BeppoSAX PDS
J. Nevalainen, T. Oosterbroek, M. Bonamente +1
We study the X-ray emission in a sample of galaxy clusters using the BeppoSAX PDS instrument in the 20 -- 80 keV energy band. The non-thermal hard X-ray cluster emission (HXR) is d…
Gamma-Ray Bursts are Produced Predominately in the Early Universe
J. R. Lin, S. N. Zhang, T. P. Li
It is known that some observed gamma-ray bursts (GRBs) are produced at cosmological distances and that the GRB production rate may follow the star formation rate. We model the BATS…
Does the Iron K Line of Active Galactic Nuclei Arise from the Cerenkov Line-like Radiation?
J. H. You, D. B. Liu, W. P. Chen +2
When thermal relativistic electrons with isotropic distribution of velocities move in a gas region, or impinge upon the surface of a cloud that consists of a dense gas or doped dus…
Direct Detection of a CME-Associated Shock in LASCO White Light Images
A. Vourlidas, S. T. Wu, A. H. Wang +2
The LASCO C2 and C3 coronagraphs recorded a unique coronal mass ejection on April 2, 1999. The event did not have the typical three-part CME structure and involved a small filament…
INTEGRAL Spectrometer SPI's GRB detection capabilities. GRBs detected inside SPI's FoV and with the anticoincidence system ACS
A. von Kienlin, V. Beckmann, A. Rau +15
The spectrometer SPI, one of the two main instruments of the INTEGRAL spacecraft, offers significant gamma-ray burst detection capabilities. In its 35 deg (full width) field of vie…
Probing the Inflow/Out-flow and Accretion Disk of Cyg X-1 in the High State with HETG/Chandra
Y. X. Feng, A. F. Tennant, S. N. Zhang
Cyg X-1 was observed in the high state at the conjunction orbital phase (0) with HETG/Chandra. Strong and asymmetric absorption lines of highly ionized species were detected, such…
Comment on "Detection of small comets with a ground-based telescope" by Frank and Sigwarth
R. L. Mutel, J. D. Fix
Frank and Sigwarth (2001,JGRSP,106,A3,3665; FS) report on an optical search for small comets in which they report detection of nine faint trails. FS claim that these trails are pro…
Particle Acceleration in Relativistic Jets due to Weibel Instability
K. -I. Nishikawa, P. Hardee, G. Richardson +3
Shock acceleration is an ubiquitous phenomenon in astrophysical plasmas. Plasma waves and their associated instabilities (e.g., the Buneman instability, two-streaming instability,…
XMM-Newton discovery of O VII emission from warm gas in clusters of galaxies
J. S. Kaastra, R. Lieu, T. Tamura +2
XMM-Newton recently discovered O VII line emission from ~2 million K gas near the outer parts of several clusters of galaxies. This emission is attributed to the Warm-Hot Intergala…
Studying the Properties of Accretion Disks and Coronae in Black Hole X-ray Binaries with Monte-Carlo Simulations
Yangsen Yao, S. Nan Zhang, Xiaoling Zhang +2
Understanding the properties of the hot corona is important for studying the accretion disks in black hole X-ray binary systems. Using the Monte-Carlo technique to simulate the inv…
A New Method to Use Chandra Data to Resolve the X-Ray Halos Around Point Sources and Its Application to Cygnus X-1
Y. Yao, S. Nan Zhang, X. L. Zhang +1
With excellent angular resolution, good energy resolution and broad energy band, the Chandra ACIS is the best instrument for studying the X-ray halos around some galactic X-ray poi…
The phase coherence of light from extragalactic sources - direct evidence against first order Planck scale fluctuations in time and space
Richard Lieu, Lloyd W. Hillman
We present a method of directly testing whether time continues to have its usual meaning on scales of <= t_P = sqrt(hbar G/c^5) ~ 5.4E-44 s, the Planck time. According to quantum g…
BeppoSAX observations of two unclassified LMXBs: X1543-624 and X1556-605
R. Farinelli, F. Frontera, N. Masetti +8
Observations of two unclassified Low Mass X-ray Binaries, X1543-624 and X1556-605, are presented. In the 2-10 keV band the first of the two sources is a factor two stronger than th…