Essays about: "Gamma-Ray Bursts"

Showing result 1 - 5 of 17 essays containing the words Gamma-Ray Bursts.

  1. 1. Fitting a photospheric prompt emission model to GRB data: The Kompaneets RMS approximation (KRA)

    University essay from KTH/Fysik

    Author : Oscar Wistemar; [2023]
    Keywords : Gamma-Ray Bursts; Astrophysics; Engineering Physics; Gamma-Blixtar; Astrofysik; Teknisk Fysik;

    Abstract : Gamma-ray bursts (GRBs) are some of the most energetic events in the universe. Shocks occurring below the photosphere are likely radiation mediated shocks (RMSs) and are suspected to shape the spectra. Due to computational costs of simulating RMSs, models had not been fitted to data and a faster model was needed. READ MORE

  3. 2. Single-peaked gamma-ray bursts in the Fermi GBM catalogue

    University essay from KTH/Fysik

    Author : Henric Hintze; [2022]
    Keywords : astroparticle physics; GBR; gamma-ray burst; single-peaked; single peaked; shock breakout; Fermi; GBM; gamma-ray burst monitor; light curve; low-luminosity; low luminosity; closure relation; astropartikelfysik; GBR; gammablixt; singelpeakad; shockbreakout; Fermi; GBM; gammablixtmonitor; ljuskurva; ljuskurvor; lågluminositets;

    Abstract : Gamma-ray burst light curves are notoriously irregular, yet a significant number consists of a single fast-rising, exponentially decaying pulse. These are called single-peaked light curves. READ MORE

  4. 3. Prompt emission in Gamma-ray bursts; Photospheric Radiation from Synchrotron-Like spectra

    University essay from KTH/Fysik

    Author : Erik Vitols; [2022]
    Keywords : Gamma-ray burst; radiation mechanisms: thermal and non-thermal;

    Abstract : Gamma-ray bursts (GRBs) are the most luminous phenomena in the Universe, explosions whoseenergy is generated by supernovae or mergers of dense objects such as neutron stars. The GRBemission is divided into the prompt emission phase characterized by γ-ray radiation and the afterglowof lower energy radiation. READ MORE

  5. 4. High-Redshift Gamma-ray Bursts as seen by SVOM/ECLAIRs

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Miguel Llamas Lanza; [2021]
    Keywords : Gamma-ray Bursts; GRBs; compact objects; high energy; ECLAIRs; SVOM; high redshift; T90; detection biases;

    Abstract : Gamma Ray Burst (GRB) are very bright cosmological explosions signalling the catastrophic formation of a black hole. Therefore, they act like real light beacons that could be detected through-out the Universe and be used as probes to study the contents and phases of the early Universe. However, only a handful sample is known so far. READ MORE

  6. 5. Investigating the Time Evolution of X-Ray Absorption in Gamma-Ray Bursts

    University essay from KTH/Fysik

    Author : Hannah Deprez; [2020]
    Keywords : ;

    Abstract : .... READ MORE