40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.5k papers
- European Southern ObservatoryCL1.5k papers
- Max Planck SocietyDE1.4k papers
- National Institute for AstrophysicsIT1.4k papers
- Center for Astrophysics Harvard & SmithsonianUS1.4k papers
- Ludwig-Maximilians-Universität MünchenDE1.4k papers
- Leiden UniversityNL1.3k papers
- California Institute of TechnologyUS1.2k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.2k papers
- Max Planck Institute for AstronomyDE1.1k papers
- University of CambridgeGB950 papers
- University College LondonGB919 papers
212 papers · 1 filter
GRB 070201: A possible Soft Gamma Ray Repeater in M31
E. O. Ofek, M. Muno, R. Quimby +13
The gamma-ray burst (GRB) 070201 was a bright short-duration hard-spectrum GRB detected by the Inter-Planetary Network (IPN). Its error quadrilateral, which has an area of 0.124 sq…
BAT X-ray Survey - I: Methodology and X-ray Identification
M. Ajello, J. Greiner, G. Kanbach +3
We applied the Maximum Likelihood method, as an image reconstruction algorithm, to the BAT X-ray Survey (BXS). This method was specifically designed to preserve the full statistica…
X-ray source populations in the Magellanic Clouds
F. Haberl, W. Pietsch
Early X-ray surveys of the Magellanic Clouds (MCs) were performed with the imaging instruments of the Einstein, ASCA and ROSAT satellites revealing discrete X-ray sources and large…
A2163: Merger events in the hottest Abell galaxy cluster I. Dynamical analysis from optical data
S. Maurogordato, A. Cappi, C. Ferrari +7
We present a detailed optical analysis of the galaxy cluster A2163 based on new multicolor wide field imaging and medium-to-high resolution (R~2000) spectroscopy. While X-ray obser…
The carbon-rich type Ic SN 2007gr: the photospheric phase
S. Valenti, N. Elias-Rosa, S. Taubenberger +20
The first two months of spectroscopic and photometric monitoring of the nearby type Ic SN 2007gr are presented. The very early discovery (less than 5 days after the explosion) and…
Imaging the Gamma-Ray Sky with SPI aboard INTEGRAL
Jürgen Knödlseder, Georg Weidenspointner, Pierre Jean +6
The spectrometer SPI on INTEGRAL allows for the first time simultaneous imaging of diffuse and point-like emission in the hard X-ray and soft gamma-ray regime. To fully exploit the…
A Giant Flare from a Soft Gamma Repeater in the Andromeda Galaxy, M31
E. P. Mazets, R. L. Aptekar, T. L. Cline +6
The light curve, energy spectra, energetics, and IPN localization of an exceedingly intense short duration hard spectrum burst, GRB 070201, obtained from Konus-Wind, INTEGRAL (SPI-…
Trends for Outer Disk Profiles
Peter Erwin, Michael Pohlen, Leonel Gutierrez +1
The surface-brightness profiles of galaxy disks fall into three main classes, based on whether they are simple exponentials (Type I), bend down at large radii (Type II, "truncation…
Testing the nature of S0 galaxies using planetary nebula kinematics in NGC 1023
E. Noordermeer, M. R. Merrifield, L. Coccato +9
We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer d…
Proper motions of ROSAT discovered isolated neutron stars measured with Chandra: First X-ray measurement of the large proper motion of RX J1308.6+2127/RBS 1223
C. Motch, A. M. Pires, F. Haberl +2
The unprecedented spatial resolution of the Chandra observatory opens the possibility to detect with relatively high accuracy proper motions at X-ray wavelengths. We have conducted…
Go Long, Go Deep: Finding Optical Jet Breaks for Swift-Era GRBs with the LBT
X. Dai, P. M. Garnavich, J. L. Prieto +20
Using the 8.4m Large Binocular Telescope, we observed six GRB afterglows from 2.8 hours to 30.8 days after the burst triggers to systematically probe the late time behaviors of aft…
XMM-Newton observations of the Lockman Hole: X-ray source catalogue and number counts
H. Brunner, N. Cappelluti, G. Hasinger +4
The Lockman Hole field represents the sky area of lowest Galactic line-of-sight column density N_H=5.7X10^19 cm^-2. It was observed by the XMM-Newton X-ray observatory in 18 pointi…
VLT/VIMOS Integral field kinematics of the Giant Low Surface Brightness galaxy ESO 323-G064
L. Coccato, R. Swaters, V. C. Rubin +2
We studied the bulge and the disk kinematic of the giant Low Surface Brightness (LSB) galaxy ESO 323-G064 in order to investigate its dynamics and its Dark Matter (DM) content. We…
The impact of main belt asteroids on infrared--submillimetre photometry and source counts
Cs. Kiss, A. Pal, Th. G. Mueller +1
<<>> Among the components of the infrared and submillimetre sky background, the closest layer is the thermal emission of dust particles and minor bodies in the Solar System. This c…
The remarkable properties of the symbiotic star AE Circinus
R. E. Mennickent, J. Greiner, J. Arenas +4
We present new optical spectroscopy and photometry, 2MASS infrared observations and 24 years of combined AAVSO and AFOEV photometry of the symbiotic star candidate æ. The long-term…
On the nature of the fast moving star S2 in the Galactic Center
F. Martins, S. Gillessen, F. Eisenhauer +3
We analyze the properties of the star S2 orbiting the supermassive black hole at the center of the Galaxy. A high quality SINFONI H and K band spectrum obtained from coadding 23.5…
Spatially Resolved Spitzer-IRS Spectroscopy of the Central Region of M82
P. Beirão, B. R. Brandl, P. N. Appleton +6
We present high spatial resolution (~ 35 parsec) 5-38 um spectra of the central region of M82, taken with the Spitzer Infrared Spectrograph. From these spectra we determined the fl…
A systematic search for novae in M31 on a large set of digitized archival Schmidt plates
M. Henze, H. Meusinger, W. Pietsch
This paper reports on the detection of optical novae in our neighbour galaxy M31 based on digitized historical Tautenburg Schmidt plates. The accurate positions of the detected nov…
Spectral Study of the Galactic Ridge X-ray Emission with Suzaku
Ken Ebisawa, Shigeo Yamauchi, Yasuo Tanaka +7
We have observed a typical Galactic plane field at (l,b) = (28.46d, -0.20d) with Suzaku for 100 ksec to carry out a precise spectral study of the Galactic Ridge X-ray Emission (GRX…
Probing Elemental Abundances in SNR 1987A Using XMM-Newton
Kevin Heng, Frank Haberl, Bernd Aschenbach +1
We report on the latest (2007 Jan) observations of supernova remnant (SNR) 1987A from the XMM-Newton mission. Since the 2003 May observations of Haberl et al. (2006), 11 emission l…
Grazing Incidence Reflection and Scattering of MeV Protons
Bernd Aschenbach
Treating protons as de Broglie waves shows that up to a few MeV energies protons experience total external reflection using the index of refraction concept for the target earlier a…
Extragalactic Surveys: AGN physics and evolution
Andrea Comastri, Marcella Brusa
We review the most important findings on AGN physics and cosmological evolution as obtained by extragalactic X-ray surveys and associated multiwavelength observations. We briefly d…
The impact of Spitzer infrared data on stellar mass estimates - and a revised galaxy stellar mass function at 0 < z < 5
F. Elsner, G. Feulner, U. Hopp
Aims: We estimate stellar masses of galaxies in the high redshift universe with the intention of determining the influence of newly available Spitzer/IRAC infrared data on the anal…
Detection of Very-High Energy Gamma-Rays from the BL Lac Object PG 1553+113 with the MAGIC Telescope
Robert Wagner, Daniela Dorner, Masaaki Hayashida +5
The MAGIC telescope has observed very-high energy gamma-ray emission from the BL Lac object PG 1553+113 in 2005 and 2006 at an overall significance is 8.8 sigma. The light curve sh…