Search results for "Cosmic distance ladder"

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Closure relations during the plateau emission of Swift GRBs and the fundamental plane

2021

The Neil Gehrels Swift observatory observe Gamma-Ray bursts (GRBs) plateaus in X-rays. We test the reliability of the closure relations through the fireball model when dealing with the GRB plateau emission. We analyze 455 X-ray lightcurves (LCs) collected by \emph{Swift} from 2005 (January) until 2019 (August) for which the redshift is both known and unknown using the phenomenological Willingale 2007 model. Using these fits, we analyze the emission mechanisms and astrophysical environments of these GRBs through the closure relations within the time interval of the plateau emission. Finally, we test the 3D fundamental plane relation (Dainotti relation) which connects the prompt peak luminosi…

PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)010308 nuclear & particles physicsAstrophysics::High Energy Astrophysical PhenomenaCosmic distance ladderFOS: Physical sciencesAstronomy and AstrophysicsAstrophysics) gamma-ray burst: general [(stars]Astrophysics::Cosmology and Extragalactic AstrophysicsPlateau (mathematics)non-thermal [radiation mechanisms]01 natural sciencesRedshiftLuminositySpace and Planetary ScienceObservatory0103 physical sciencesISM [X-rays]Flatness (cosmology)Gamma-ray burstFundamental plane (elliptical galaxies)Astrophysics - High Energy Astrophysical Phenomena010303 astronomy & astrophysics
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