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- National Institute for Subatomic PhysicsNL871 papers
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42 papers · 2 filters
XMM-Newton Spectroscopy of the Cluster of Galaxies 2A 0335+096
N. Werner, J. de Plaa, J. S. Kaastra +5
We present here the results of a deep (130 ks) XMM-Newton observation of the cluster of galaxies 2A 0335+096. The deep exposure allows us to study in detail its temperature structu…
Observational evidence for a truncation of the star cluster initial mass function at the high mass end
Mark Gieles, Soeren Larsen, Remco Scheepmaker +3
We present the luminosity function (LF) of star clusters in M51 based on HST/ACS observations taken as part of the Hubble Heritage project. The clusters are selected based on their…
On the Collapsar Model of Long Gamma-Ray Bursts: Constraints from Cosmic Metallicity Evolution
N. Langer, C. A. Norman
We explore the consequences of new observational and theoretical evidence that long gamma-ray bursts prefer low metallicity environments. Using recently derived mass-metallicity co…
Two-phase X-ray burst from GX 3+1 observed by INTEGRAL
Jerome Chenevez, Maurizio Falanga, Soeren Brandt +6
INTEGRAL detected on August 31, 2004, an unusual thermonuclear X-ray burst from the low-mass X-ray binary GX 3+1. Its duration was 30 min, which is between the normal burst duratio…
Quantitative bispectra from multifield inflation
G. I. Rigopoulos, E. P. S. Shellard, B. J. W. van Tent
After simplifying and improving the non-Gaussian formalism we developed in previous work, we derive a quantitative expression for the three-point correlator (bispectrum) of the cur…
An X-ray view of Mrk 705: A borderline narrow-line Seyfert 1 galaxy
L. C. Gallo, I. Balestra, E. Costantini +4
Mrk 705 exhibits optical properties of both narrow- and broad-line Seyfert 1 galaxies. We examine the X-ray properties of this borderline object utilising proprietary and public da…