Aditya Narendra

Obserwatorium Astronomiczne Uniwersytetu Jagiellońskiego

Sesja V: Astrofizyka wysokich energii

Środa 13.09.2023 12:45 – 13:00

abstrakt:
Gamma ray bursts (GRB) are the most extreme electromagnetic events in the universe. They have been observed up to redshift of 9.4. Thus, they provide an excellent opportunity to study the early universe. However, for this to happen, we require a good coverage of a GRB’s light curve. Such constraints can help us obtain strong constraints on their intrinsic properties. One of the features of GRB light curve is called the plateau emission, when the GRB flux remains constant over a period of time. This plateau emission has been linked to the spin down emissions of a newly born neutron star. Thus, plateau emission properties are linked to fundamental astrophysics and obtaining tight constraints on their values can help us realise the cosmological prospects of GRBs. However, many GRB light curves lack full coverage of this plateau region due to lack of follow-up observations, orbital periods of satellites, etc.
We address this issue by proposing a light curve reconstruction technique using two methods. We show that with our techniques we can obtain a 30% reduction in the error of the parameters which describe the plateau emission.
Thus, with this technique we can help better constrain the plateau emission parameters and help with the cosmological application of GRBs.