Gamma-Ray Bursts Can Destroy Planets Photo: ESO/L. Calçada Flickr CC-BY 2.0 Gamma-ray bursts, giant explosions in distant galaxies that send out waves of gamma rays, are capable of destroying entire planets if their properties are pointed directly at the planet in question. Despite such a ...
Gamma-Ray Bursts Can Destroy Planets Photo: ESO/L. Calçada Flickr CC-BY 2.0 Gamma-ray bursts, giant explosions in distant galaxies that send out waves of gamma rays, are capable of destroying entire planets if their properties are pointed directly at the planet in question. Despite such a...
The persistence of life on Earth may depend on massive explosions on the other side of the galaxy, according to a new theory that suggests powerful bursts of space radiation could have played a part in some of our planet's major extinction events.msnbc.com...
GAMMA RAYS: BURSTSRADIATION MECHANISMS: NONTHERMALGamma Rays: BurstsRadiation Mechanisms: NonthermalThe observed afterglows of gamma ray bursts, in particular that of GRB 970228 six months later, seem to rule out relativistic fireballs and relativistic firecones driven by merger or accretion induced ...
Context: The identification of long-gamma-ray-bursts (LGRBs) is still uncertain, although the collapsar engine of fast-rotating massive stars is gaining a strong consensus. Aims: We propose that low-metallicity Be and Oe stars, which are massive fast rotators, as potential LGRBs progenitors. ...
gamma ray bursts (GRBs), in particular that of GRB 970228 six months later, seem to rule out relativistic fireballs and relativistic firecones driven by merger or accretion induced collapse of compact stellar objects in galaxies as the origin of GRBs. GRBs can be produced by superluminal...
gamma-ray burst: generalNearby gamma-ray bursts (GRBs) have been proposed as a possible cause of mass extinctions on Earth. Due to the higher event rate of GRBs at higher redshifts, it has been speculated that life as we know it may not survive above a certain redshift (e.g., )....
Gamma Ray BurstsNeutron StarsGravitational EffectsStellar EvolutionStellar Mass AccretionSupernovaeThermonuclear Reactionsγ-Ray bursts have been attributed to binary systems 1–3 with the burst resulting from an accretion instability 1,2 , or a thermonuclear explosion at the surface of an accreting ...
F. W. Stecker. Can gamma ray bursts produce the observed cosmic rays above 1020 eV? Astropart. Phys., 14(3):207-210, November 2000. arXiv:astro- ph/9911269.F. W. Stecker, Can gamma ray bursts produce the observed cosmic rays above 1020 eV? Astroparticle Physics 14 (2000) 207-210....
Gamma ray burstsType Ia supernovaeIt has been suggested that Gamma Ray Bursts (GRB) may enable the expansion rate of our Universe to be measured out to very high redshifts ( z 5) just as type Ia supernovae have done at z 1–1.5. We explore this possibility here, and find that ...