Sron Netherlands Institute for Space Research
Publications31
Citations65
Influential Citations5
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It is generally accepted that anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are magnetars, i.e. neutron stars with extremely high surface magnetic fields (B > 1014 G). The origin… (More)
Abstract The time evolution of the strength of the Earth’s virtual axial dipole moment (VADM) is analyzed by relating it to the Fokker–Planck equation, which describes a random walk with… (More)
- Esa Vilenius, Cs. P. Kiss, +46 authors Universit'e de Provence
- 2014
Context. The Kuiper belt is formed of planetesimals which failed to grow to planets and its dynamical structure has been affected by Neptune. The classical Kuiper belt contains objects both from a… (More)
- Ch. Thalmann, Carol Anne Grady, +111 authors Sendai
- 2010
We present H- and Ks-band imaging data resolving the gap in the transitional disk around LkCa 15, revealing the surrounding nebulosity. We detect sharp elliptical contours delimiting the nebulosity… (More)
NH3 and CH3OH are key molecules in astrochemical networks leading to the formation of more complex N- and O-bearing molecules, such as CH3CN and HCOOCH3. Despite a number of recent studies, little is… (More)
- René Liseau, Paul F. Goldsmith, +76 authors University College
- 2012
Context. Models of pure gas-phase chemistry in well-shielded regions of molecular clouds predict relatively high levels of molecular oxygen, O-2, and water, H2O. These high abundances imply high… (More)
- M. G. Marseille, Sylvain Bontemps, +13 authors United Kingdom
- 2008
The study of physical and chemical properties of massive protostars is critical to better understand the evolutionary sequence which leads to the formation of high-mass stars. IRAS 18151-1208 is a… (More)
Context. Sub-millimeter and Far-IR observations have shown the presence of a significant amount of warm (few hundred K) and dense (n(H-2) >= 10(4) cm(-3)) gas in sources ranging from active… (More)
- R. Georgii, Stefan Pluschke, +21 authors Noordwijk
- 2002
Supernova 1998bu in the galaxy M 96 was observed by COMPTEL for a total of 88 days starting 17 days after the explosion. We searched for a signal in the 847 keV and 1238 keV lines of radioactive 56… (More)
- Nahum Arav, Jelle Sjerp Kaastra, +4 authors Utrecht University
- 2006
A recent manuscript posted on astro-ph (astro-ph/0611578) by Fields et al. (hereafter F06) reports evidence of supersolar metal abundances in Mrk 279 by analyzing its Chandra LETGS X-ray spectrum. We… (More)