8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Leiden UniversityNL722 papers
- Centre National de la Recherche ScientifiqueFR633 papers
- University of AmsterdamNL630 papers
- University of GroningenNL511 papers
- Center for Astrophysics Harvard & SmithsonianUS508 papers
- Radboud University NijmegenNL424 papers
- Leiden Observatory362 papers
- Max Planck Institute for Extraterrestrial PhysicsDE362 papers
- National Institute for AstrophysicsIT342 papers
- Goddard Space Flight CenterUS333 papers
- California Institute of TechnologyUS313 papers
- University of CambridgeGB299 papers
52 papers · 2 filters
Chandra-LETGS observation of Mrk 279: modeling the AGN internal structure
E. Costantini, J. S. Kaastra, K. C. Steenbrugge +3
We present the Chandra-LETGS analysis of Mrk 279, a bright Seyfert 1 galaxy. The spectrum shows a variety of features arising from different physical environments in the vicinity o…
Probing the environment in Gamma-ray bursts: the case of an X-ray precursor, afterglow late onset and wind vs constant density profile in GRB011121 and GRB011211
L. Piro, M. De Pasquale, P. Soffitta +9
In this paper we present BeppoSax and XMM observations of two long Gamma-ray bursts, the X-ray rich event of December 11, 2001 (GRB011211) and the hard and very bright event of Nov…
High Resolution X-ray Spectroscopy of SN 1006
Jacco Vink
I discuss the high resolution XMM-Newton Reflection Grating Spectrometer (RGS) spectrum of SN1006. SN1006 is one of the best examples of a supernova remnant that is far out of ioni…
Photon-Dominated Chemistry in the Nucleus of M82: Widespread HOC+ emission in the inner 650 pc disk
A. Fuente, S. Garcia-Burillo, M. Gerin +4
The nucleus of M82 has been mapped in several 3mm and 1mm lines of CN, HCN, C2H, c-C3H2, CH3C2H, HC3N and HOC+ using the IRAM 30m telescope. These species have been purposely selec…
Investigating the EGRET-radio galaxies link with INTEGRAL: the case of 3EG J1621+8203 and NGC 6251
L. Foschini, M. Chiaberge, P. Grandi +10
The analysis of an INTEGRAL AO2 observation of the error contours of the EGRET source 3EG J1621+8203 is presented. The only source found inside the error contours for energies betw…
Temperature and entropy profiles of nearby cooling flow clusters observed with XMM-Newton
Rocco Piffaretti, Philippe Jetzer, Jelle Kaastra +1
We investigate temperature and entropy profiles of 13 nearby cooling flow clusters observed with the EPIC cameras of XMM-Newton. When normalized and scaled by the virial radius the…
XMM-Newton X-ray spectroscopy of the high-mass X-ray binary 4U1700-37 at low flux
A. van der Meer, L. Kaper, T. Di Salvo +4
We present results of a monitoring campaign of the high-mass X-ray binary system 4U 1700-37/HD 153919, carried out with XMM-Newton in February 2001. The system was observed at four…
Ices in the edge-on disk CRBR 2422.8-3423: Spitzer spectroscopy and Monte Carlo radiative transfer modeling
Klaus M. Pontoppidan, Cornelis P. Dullemond, Ewine F. van Dishoeck +5
We present 5.2-37.2 micron spectroscopy of the edge-on circumstellar disk CRBR 2422.8-3423 obtained using the InfraRed Spectrograph (IRS) of the Spitzer Space Telescope. The IRS sp…
XMM-Newton observations of the heavily absorbed Seyfert 1 galaxy IC 4329A
K. C. Steenbrugge, J. S. Kaastra, M. Sako +5
We detect seven distinct absorbing systems in the high-resolution X-ray spectrum of the Seyfert 1 galaxy IC 4329A, taken with XMM-Newton. Firstly we detect absorption due to cold g…
Hard X-ray Emission Clumps in the gamma-Cygni Supernova Remnant: an INTEGRAL-ISGRI View
A. M. Bykov, A. M. Krassilchtchikov, Yu. A. Uvarov +12
Spatially resolved images of the galactic supernova remnant G78.2+2.1 (gamma-Cygni) in hard X-ray energy bands from 25 keV to 120 keV are obtained with the IBIS-ISGRI imager aboard…
HDO abundance in the envelope of the solar-type protostar IRAS16293-2422
B. Parise, E. Caux, A. Castets +12
We present IRAM 30m and JCMT observations of HDO lines towards the solar-type protostar IRAS 16293-2422. Five HDO transitions have been detected on-source, and two were unfruitfull…
Relationship between X-ray and ultraviolet emission of flares from dMe stars observed by XMM-Newton
U. Mitra-Kraev, L. K. Harra, M. Guedel +6
We present simultaneous ultraviolet and X-ray observations of the dMe-type flaring stars AT Mic, AU Mic, EV Lac, UV Cet and YZ CMi obtained with the XMM-Newton observatory. During…
INTEGRAL/SPI Limits on Electron-Positron Annihilation Radiation from the Galactic Plane
B. J. Teegarden, K. Watanabe, P. Jean +24
The center of our Galaxy is a known strong source of electron-positron 511-keV annihilation radiation. Thus far, however, there have been no reliable detections of annihilation rad…
A highly-ionized absorber in the X-ray binary 4U 1323-62: a new explanation for the dipping phenomenon
L. Boirin, M. Mendez, M. Diaz Trigo +2
We report the detection of narrow Fe XXV and Fe XXVI X-ray absorption lines at 6.68 +/- 0.04 keV and 6.97 +/- 0.05 keV in the persistent emission of the dipping low-mass X-ray bina…
A Million-Second Chandra View of Cassiopeia A
Una Hwang, J. Martin Laming, Carles Badenes +20
We introduce a million-second observation of the supernova remnant Cassiopeia A with the Chandra X-ray Observatory. The bipolar structure of the Si-rich ejecta (NE jet and SW count…
Non-thermal X-ray Emission from Supernova Remnants
Jacco Vink
Recent studies of narrow, X-ray synchrotron radiating filaments surrounding young supernova remnants indicate that magnetic fields strengths are relatively high, B ~ 0.1 mG, or eve…
The distribution of kHz QPO frequencies in Sco X-1
Tomaso Belloni, Mariano Mendez, Jeroen Homan
The frequencies of kHz Quasi-Periodic Oscillations in the bright Low-Mass X-ray Binary Sco X-1 have been reported to appear preferentially in a 3:2 ratio. We show that a proper sta…
The prompt X-ray emission of GRB011211: possible evidence of a transient absorption feature
F. Frontera, L. Amati, J. J. M. in 't Zand +10
We report on observation results of the prompt X- and gamma-ray emission from GRB011211. This event was detected with the Gamma-Ray Burst Monitor and one of the Wide Field Cameras…
On the Hipparcos parallaxes of O stars
S. E. Schroeder, L. Kaper, H. J. G. L. M. Lamers +1
We compare the absolute visual magnitude of the majority of bright O stars in the sky as predicted from their spectral type with the absolute magnitude calculated from their appare…
The Star Cluster Population of M51: II. Age distribution and relations among the derived parameters
N. Bastian, M. Gieles, H. J. G. L. M. Lamers +2
We use archival {\it Hubble Space Telescope} observations of broad-band images from the ultraviolet (F255W-filter) through the near infrared (NICMOS F160W-filter) to study the star…
Prompt and afterglow X-ray emission from the X-Ray Flash of 2002 April 27
L. Amati, F. Frontera, J. J. M. in 't Zand +15
We report on the X-ray observations of the X-ray flash (XRF) which occurred on 2002 April 27, three days before BeppoSAX was switched off. The event was detected with the BeppoSAX…
A BeppoSAX-WFC viewpoint of new INTEGRAL sources, particularly IGR J17544-2619
Jean in 't Zand, John Heise, Pietro Ubertini +2
Of the 21 new sources that INTEGRAL discovered up to Feb. 1, 2004, five were detected with the BeppoSAX Wide Field Cameras at earlier times. IGR J16320-4751 appears to be a persist…
Superbursts at near-Eddington mass accretion rates
J. J. M. in 't Zand, R. Cornelisse, A. Cumming
Models for superbursts from neutron stars involving carbon shell flashes predict that the mass accretion rate should be anywhere in excess of one tenth of the Eddington limit. Yet,…
INTEGRAL observation of 3EG J1736-2908
G. Di Cocco, L. Foschini, P. Grandi +10
The possible identification by INTEGRAL of the EGRET source 3EG J1736-2908 with the active galactic nucleus GRS 1734-292 is discussed. The latter was discovered in 1990 and later i…