Hmmm ... mit scheint, es handelt sich hier um da zwei verschieden Effekte ...
... in einigen der obigen Zitate geht es eher um kosmische denn terrestrische Ereignisse aus dem Bereich der Astronomie bzw. Astrophysik ... die werden im Deutschen ebenfalls als "Gammablitze" bezeichnet ... im Englischen aber häufiger als "gamma-ray burst (GRB)" ...
https://www.merriam-webster.com/dictionary/ga...
gamma-ray burst noun
variants: or less commonly gamma ray burst
Definition of gamma-ray burst
: a brief, powerful jet of gamma rays detected deep in space that is generated by the collapse and explosion of a celestial object Eventually, though, the neutron star slows down, probably because of magnetic braking. Then it implodes, touching off a gamma ray burst.— Govert Schilling —
abbreviation GRB ...
https://www.collinsdictionary.com/dictionary/...
gamma-ray burst in British English
noun
astronomy
an intense but short-lived burst of gamma rays from an unknown celestial source. First detected in 1970, they have since been found to be widely distributed in the sky
... It may arrive thanks to a massive gamma ray burst from space, instantly sterilising the entire planet.
Times, Sunday Times (2016)
The first decent gamma ray burst would mean the end for humans, but life would persist in the oceans.
Times, Sunday Times (2017)
That fear has receded but it is still possible that a future gamma-ray burst could head our way with very little warning.
The Sun (2012) ...
http://dictionary.obspm.fr/index.php?showAll=...
An Etymological Dictionary of Astronomy and Astrophysics
gamma-ray burst (GRB)
بلک ِ پرتوهای ِ گاما
belk-e partowhâ-ye gâmmâ
Fr.: sursaut de rayons gamma
An intense discharge of → gamma rays, which range in duration from tenth of a second to tens of seconds and occur from sources widely distributed over the sky. The radio wave → afterglow from the → burst can last more than a year, making long-term observations of the sources possible. The favored hypothesis is that they are produced by a relativistic jet created by the merger of two → compact objects (specifically two → neutron stars or a neutron star and a → black hole). ...
https://imagine.gsfc.nasa.gov/science/objects...
Gamma-ray Bursts
Gamma-ray bursts (GRBs) are short-lived bursts of gamma-ray light, the most energetic form of light. Lasting anywhere from a few milliseconds to several minutes, GRBs shine hundreds of times brighter than a typical supernova and about a million trillion times as bright as the Sun. When a GRB erupts, it is briefly the brightest source of cosmic gamma-ray photons in the observable Universe. ...
https://www.eso.org/public/science/grb/
Gamma-Ray Bursts
One of the Most Energetic Phenomena in the Universe
Gamma-Ray Bursts (GRBs) are bursts of highly energetic gamma rays lasting from less than a second to several minutes – the blink of an eye on cosmological timescales. They are known to occur at huge distances from Earth, towards the limits of the observable Universe. ...
https://de.wikipedia.org/wiki/Gammablitz
Gammablitze, Gammastrahlenblitze, Gammastrahlenausbrüche oder auch Gammastrahlenexplosionen (englisch gamma-ray bursts, oft abgekürzt GRB) sind Energieausbrüche sehr hoher Leistung im Universum, von denen große Mengen elektromagnetischer Strahlung ausgehen.
Die Entstehung der Gammablitze ist noch nicht vollständig geklärt. Man beobachtete einen Gammablitz erstmals am 2. Juli 1967 mit den US-amerikanischen Vela-Überwachungssatelliten, die eigentlich zur Entdeckung oberirdischer Atombombentests dienten. Dass die Strahlen aus den Tiefen des Weltraums kamen, wurde erst 1973 durch Wissenschaftler im Los Alamos National Laboratory in New Mexico mit den Daten der Satelliten sicher festgestellt.
Die Bezeichnung „Gammablitz“ hat sich wahrscheinlich eingebürgert, weil die Vela-Satelliten zur Detektion der Gammastrahlung von Kernwaffenexplosionen gedacht und ausgerüstet waren. Auch wird elektromagnetische Strahlung mit Photonenenergien im keV-Bereich und höher oft allgemein als Gammastrahlung bezeichnet, wenn ihre Quelle und Entstehung nicht bekannt ist. Um Gammastrahlung im engeren, kernphysikalischen Sinn handelt es sich bei den Gammablitzen nicht. ...
https://en.wikipedia.org/wiki/Gamma-ray_burst
In gamma-ray astronomy, gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies. They are the most energetic and luminous electromagnetic events since the Big Bang.[1] Bursts can last from ten milliseconds to several hours.[2][3][4] After an initial flash of gamma rays, a longer-lived "afterglow" is usually emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, microwave and radio).[5]
The intense radiation of most observed GRBs is thought to be released during a supernova or superluminous supernova as a high-mass star implodes to form a neutron star or a black hole.
A subclass of GRBs (the "short" bursts) appear to originate from the merger of binary neutron stars. The cause of the precursor burst observed in some of these short events may be the development of a resonance between the crust and core of such stars as a result of the massive tidal forces experienced in the seconds leading up to their collision, causing the entire crust of the star to shatter.[6] ...
PS : eine Unterscheidung zu den im OP ebenfalls erwähnten "terrestrial gamma-ray flashes (TGFs)" müsste mE. noch herausgearbeitet werden ...
