Gamma ray Burst in Our Cosmic Backyard, Gammablitz aus der kosmischen Nachbarschaft

Turn on subtitles for explanation. Für Beschreibung Untertitel aktivieren. (Switch language via settings) Somewhere in a distant galaxy, a massive dying star collapses and a neutron star or black hole forms. Relativistic jets break out of the collapsing star, and a supernova is produced. The jet ploughs through the surrounding gas sweeping up particles. Some particles scatter on magnetic fields around the blast wave and are accelerated. The accelerated electrons emit high energy photons in the Xray and gammaray regime at every deflection. This emission is called synchrotron radiation. Relativistic beaming occurs in the jet direction. When looking exactly down a jet, the event becomes visible as a gammaray burst (GRB). Roughly 900 million years later, radiation from this gammaray burst arrives at Earth and is detected by satellites and telescopes as GRB 190829A. Highenergy photons hitting Earth s atmosphere produce particle showers that emit socalled Cherenkov light for a cou