Ambiente galáctico y extragaláctico de grbs peculiares: estudio de los grbs : grb070724a y grb070429b mediante los instrumentos xrt y bat del observatorio neil gehrels swift.

Abstract

Gamma-ray bursts (GRBs) can be classified based on temporal variability and spectral parameters. Historically, T90 has been the main parameter used for classification. GRBs with T90 < 2 are considered short GRBs (SGRBs), while those with T90 > 2 are considered long GRBs (LGRBs). These sub-populations of GRBs are typically associated with different types of progenitors: SGRBs with mergers of compact objects (such as black holes and neutron stars) and LGRBs with collapsars (gravitational collapse of massive stars). This is known as the canonical classification. However, both the literature and this study provide evidence that this classification is not always definitive. This work details the temporal and spectral analysis of GRB 070429B and GRB 070724A, previously identified as potential candidates for peculiar GRBs. Additionally, the galactic environment of these events is explored, allowing for a comparison of temporal and spectral information. The results demonstrate that the canonical classification is not optimal for determining the progenitors of the GRBs analyzed in this study.