On the PDS of GRB light curves
Abstract
In spite of the complicated behavior in the time domain, long GRBs show a simpler behavior in the Fourier domain of frequencies, represented by power density spectra, PDS. Recently, there are some relations found between GRBs properties and PDS parameters, modeled by power-laws. Among them, the correlation between peak energy Epeak and PDS slope alpha shows a clear evidence. In this work we try to understand the origin of this correlation, making use of synthetic pulses. We find some preliminary evidences that Epeak-alpha relation can be seen as a new confirmation of the empiric relations Epeak-L and tp-L for GRBs.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 2018
- DOI:
- 10.48550/arXiv.1802.01695
- arXiv:
- arXiv:1802.01695
- Bibcode:
- 2018MmSAI..89..289B
- Keywords:
-
- GRB: light-curves;
- PDS: Fast Fourier Transform;
- power-law models;
- Relations: Peak energy-slope;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- To be published in the Proceedings of the THESEUS Workshop 2017 (http://www.isdc.unige.ch/theseus/workshop2017.html), Journal of the Italian Astronomical Society (Mem.SAIt), Editors L. Amati, E. Bozzo, M. Della Valle, D. Gotz, P. O'Brien. Details on the THESEUS mission concept can be found in the white paper Amati et al. 2017 (arXiv:171004638) and Stratta et al. 2017 (arXiv:1712.08153)