1. Denmark: Women's grants lost in inequality ocean.

    Nature 519(7542):158 (2015) PMID 25762273

  2. Astrophysics. Multiple images of a highly magnified supernova formed by an early-type cluster galaxy lens.

    Science 347(6226):1123 (2015) PMID 25745167

    In 1964, Refsdal hypothesized that a supernova whose light traversed multiple paths around a strong gravitational lens could be used to measure the rate of cosmic expansion. We report the discovery of such a system. In Hubble Space Telescope imaging, we have found four images of a single superno...
  3. A dust-parallax distance of 19 megaparsecs to the supermassive black hole in NGC 4151.

    Nature 515(7528):528 (2014) PMID 25428499

    The active galaxy NGC 4151 has a crucial role as one of only two active galactic nuclei for which black hole mass measurements based on emission line reverberation mapping can be calibrated against other dynamical techniques. Unfortunately, effective calibration requires accurate knowledge of th...
  4. Rapid formation of large dust grains in the luminous supernova 2010jl.

    Nature 511(7509):326 (2014) PMID 25030169

    The origin of dust in galaxies is still a mystery. The majority of the refractory elements are produced in supernova explosions, but it is unclear how and where dust grains condense and grow, and how they avoid destruction in the harsh environments of star-forming galaxies. The recent detection ...
  5. The supernova-gamma-ray burst-jet connection.

    Philosophical Transactions of the Royal Society... 371(1992):20120275 (2013) PMID 23630379

    The observed association between supernovae and gamma-ray bursts represents a cornerstone in our understanding of the nature of gamma-ray bursts. The collapsar model provides a theoretical framework for this connection. A key element is the launch of a bipolar jet (seen as a gamma-ray burst). Th...
  6. Impact of a European directive on ship emissions on air quality in Mediterranean harbours

    Atmospheric Environment 61:661 (2012)

    Ships have been found to be major sources of air pollution in harbours. However, from January 1, 2010, a European Union directive requires that all ships at berth or anchorage in European harbours use fuels with a sulphur content of less than 0.1% by weight while previously, outside of...
  7. Gravitational redshift of galaxies in clusters as predicted by general relativity.

    Nature 477(7366):567 (2011) PMID 21956329

    The theoretical framework of cosmology is mainly defined by gravity, of which general relativity is the current model. Recent tests of general relativity within the Lambda Cold Dark Matter (ΛCDM) model have found a concordance between predictions and the observations of the growth rate and clust...
  8. Simulated dark-matter halos as a test of nonextensive statistical mechanics.

    Physical Review E 77(2 Pt 1):022106 (2008) PMID 18352070

    In the framework of nonextensive statistical mechanics, the equilibrium structures of astrophysical self-gravitating systems are stellar polytropes, parametrized by the polytropic index n . By careful comparison to the structures of simulated dark-matter halos we find that the density profiles, ...
  9. No supernovae associated with two long-duration gamma-ray bursts.

    Nature 444(7122):1047 (2006) PMID 17183316

    It is now accepted that long-duration gamma-ray bursts (GRBs) are produced during the collapse of a massive star. The standard 'collapsar' model predicts that a broad-lined and luminous type Ic core-collapse supernova accompanies every long-duration GRB. This association has been confirmed in ob...
  10. Dimethyl sulfide and dimethyl sulfoxide and their oxidation in the atmosphere.

    Chemical Reviews 106(3):940 (2006) PMID 16522014

  11. The optical afterglow of the short gamma-ray burst GRB 050709.

    Nature 437(7060):859 (2005) PMID 16208365

    It has long been known that there are two classes of gamma-ray bursts (GRBs), mainly distinguished by their durations. The breakthrough in our understanding of long-duration GRBs (those lasting more than approximately 2 s), which ultimately linked them with energetic type Ic supernovae, came fro...
  12. Mysterious disappearance of female investigators.

    Nature 436(7048):174 (2005) PMID 16015305

  13. Atmospheric chemistry of C3-C6 cycloalkanecarbaldehydes.

    Journal of Physical Chemistry A: Molecules, Spe... 109(23):5104 (2005) PMID 16833864

    The rate coefficients for the gas phase reaction of NO3 and OH radicals with a series of cycloalkanecarbaldehydes have been measured in purified air at 298 +/- 2 K and 760 +/- 10 Torr by the relative rate method using a static reactor equipped with long-path Fourier transform infrared (FT-IR) de...
  14. OH-initiated oxidation of DMS/DMSO: reaction products at high NOxlevels

    Environmental Pollution 127(3):403 (2004)

    Dimethylsulphide (DMS) gas phase oxidation with OH radicals was investigated by long path FT-IR spectroscopy and by ion chromatography (IC) and HPLC-MS 2 to quantify the reaction products and evaluate heterogeneous processes. The experiments were performed considering two different NO...
  15. Small-scale variations in the radiating surface of theGRB 011211jet

    New Astronomy 9(6):435 (2004)

    We report the discovery of the afterglow of the X-ray rich, long-duration γ-ray burst GRB 011211 and present evidence for oscillatory behaviour in its early optical light curve. The time-scale of the fluctuations, ∼1 h, is much smaller than the time of the observations, ∼12 h from th...
  16. OH-initiated oxidation of DMS/DMSO: reaction products at high NOx levels.

    Environmental Pollution 127(3):403 (2004) PMID 14638301

    Dimethylsulphide (DMS) gas phase oxidation with OH radicals was investigated by long path FT-IR spectroscopy and by ion chromatography (IC) and HPLC-MS2 to quantify the reaction products and evaluate heterogeneous processes. The experiments were performed considering two different NOx (NO2+NO) l...
  17. Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB030329.

    Nature 426(6963):157 (2003) PMID 14614499

    The association of a supernova with GRB030329 strongly supports the 'collapsar' model of gamma-ray bursts, where a relativistic jet forms after the progenitor star collapses. Such jets cannot be spatially resolved because gamma-ray bursts lie at cosmological distances; their existence is instead...
  18. A very energetic supernova associated with the gamma-ray burst of 29 March 2003.

    Nature 423(6942):847 (2003) PMID 12815425

    Over the past five years evidence has mounted that long-duration (>2 s) gamma-ray bursts (GRBs)-the most luminous of all astronomical explosions-signal the collapse of massive stars in our Universe. This evidence was originally based on the probable association of one unusual GRB with a supernov...
  19. TheM-TXrelation for clusters of galaxies

    New Astronomy Reviews 42(2):145 (1998)

    If clusters of galaxies are self-similar and the intracluster gas is in global quasiequilibrium with the dark matter, a tight relation between mass and X-ray temperature is expected in most cosmological models. We here calibrate this relation using 8 clusters with well-defined global temper...
  20. Correlation between29Si NMR chemical shifts and mean SiO bond lengths for calcium silicates

    Chemical Physics Letters 172(3):279 (1990)

    The nine resonances in the hitherto unassigned 29Si magic-angle-spinning NMR spectrum of tricalcium silicate (C 3S) are tentatively assigned using a δ versus d SiO correlation between isotropic 29Si chemical shifts (δ) and ...