13 Result(s)

Article

Birth of a relativistic outflow in the unusual γ-ray transient Swift J164449.3+573451

Two groups report observations of the X-ray source Swift J164449.3+573451, which was discovered when it triggered the Swift Burst Alert Telescope on 28 March 2011. Burrows et al. report that the source has increa...

B. A. Zauderer, E. Berger, A. M. Soderberg, A. Loeb, R. Narayan, D. A. Frail… in Nature (2011)

Article

A faint type of supernova from a white dwarf with a helium-rich companion

The novel properties of the faint supernova SN 2005E mean that it does not fit readily into the established supernova categories. Types Ib, Ic and II, core-collapse supernovae, are thought to form when a massi...

H. B. Perets, A. Gal-Yam, P. A. Mazzali, D. Arnett, D. Kagan, A. V. Filippenko… in Nature (2010)

Article

A γ-ray burst at a redshift of z ≈ 8.2

Two groups present redshift determinations and other spectroscopic data for the γ-ray burst GRB 090423 — now the earliest and most distant astronomical object known. Salvaterra et al. report its initial detection...

N. R. Tanvir, D. B. Fox, A. J. Levan, E. Berger, K. Wiersema, J. P. U. Fynbo… in Nature (2009)

Article

Broadband observations of the naked-eye γ-ray burst GRB 080319B

Long-duration γ-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation from the collapse of massive sta...

J. L. Racusin, S. V. Karpov, M. Sokolowski, J. Granot, X. F. Wu, V. Pal’shin… in Nature (2008)

Article

An extremely luminous X-ray outburst at the birth of a supernova

Massive stars end their short lives in spectacular explosions—supernovae—that synthesize new elements and drive galaxy evolution. Historically, supernovae were discovered mainly through their ‘delayed’ optical...

A. M. Soderberg, E. Berger, K. L. Page, P. Schady, J. Parrent, D. Pooley… in Nature (2008)

Article

An unusually brilliant transient in the galaxy M85

Many important astronomical discoveries began with the sighting of a transient light or radio source. The unusually brilliant optical transient OT2006-1, spotted in the galaxy Messier 85 in the Virgo Cluster i...

S. R. Kulkarni, E. O. Ofek, A. Rau, S. B. Cenko, A. M. Soderberg, D. B. Fox… in Nature (2007)

Article

A novel explosive process is required for the γ-ray burst GRB 060614

The tidy classification system that divided γ-ray bursts (GRBs) into long-duration busts (lasting more than two seconds) and short may have had its day. The final nail in its coffin may be GRB 060614. Discover...

A. Gal-Yam, D. B. Fox, P. A. Price, E. O. Ofek, M. R. Davis, D. C. Leonard… in Nature (2006)

Article

Relativistic ejecta from X-ray flash XRF 060218 and the rate of cosmic explosions

A link between long γ-ray bursts (GRBs) and supernovae has been established, but whether there is a similar relationship between the weaker and softer X-ray flashes and supernovae is unclear. GRB/XRF 060218, s...

A. M. Soderberg, S. R. Kulkarni, E. Nakar, E. Berger, P. B. Cameron, D. B. Fox… in Nature (2006)

Article

A photometric redshift of z = 6.39 ± 0.12 for GRB 050904

The γ-ray burst GRB 050904, detected by the Swift satellite on 4 September last year, is one of the most distant objects ever observed. Its redshift of z = 6.3 equates to an explosion taking place 12.8 billion ye...

J. B. Haislip, M. C. Nysewander, D. E. Reichart, A. Levan, N. Tanvir, S. B. Cenko… in Nature (2006)

Article

The afterglow and elliptical host galaxy of the short γ-ray burst GRB 050724

Gamma-ray bursts (GRBs) are either ‘long and soft’, or ‘short and hard’. It is now clear that the long-duration type are caused by explosions of massive stars in distant star-forming galaxies. Only in recent m...

E. Berger, P. A. Price, S. B. Cenko, A. Gal-Yam, A. M. Soderberg, M. Kasliwal… in Nature (2005)

Article

The afterglow of GRB 050709 and the nature of the short-hard γ-ray bursts

The final chapter in the long-standing mystery of the γ-ray bursts (GRBs) centres on the origin of the short-hard class of bursts, which are suspected on theoretical grounds to result from the coalescence of n...

D. B. Fox, D. A. Frail, P. A. Price, S. R. Kulkarni, E. Berger, T. Piran… in Nature (2005)

Article

Kohlendioxid als Wasserstoffacceptor bei der Dehydrierung von Alkanen

D. B. Fox, E. H. Lee, M. -H. Rei in Colloid and Polymer Science (1974)