Pregled bibliografske jedinice broj: 984160
The peak luminosity-peak energy correlation in gamma-ray bursts
The peak luminosity-peak energy correlation in gamma-ray bursts // Monthly Notices of the Royal Astronomical Society : Letters, 360 (2005), 1; L45-L49 doi:10.1111/j.1745-3933.2005.00043.x (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 984160 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
The peak luminosity-peak energy correlation in gamma-ray bursts
Autori
Ghirlanda, G. ; Ghisellini, G. ; Firmani, C. ; Celotti, A. ; Bošnjak, Željka
Izvornik
Monthly Notices of the Royal Astronomical Society : Letters (1745-3925) 360
(2005), 1;
L45-L49
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
cosmology: observations, gamma-rays: bursts
Sažetak
We derive the correlation between the peak luminosity Liso and the peak energy of the νFν spectrum Epeak using 25 long gamma-ray bursts (GRBs) with firm redshift measurements. We find that its slope is similar to that of the correlation between the time-integrated isotropic emitted energy Eiso and Epeak. For the 16 GRBs in our sample with estimated jet opening angle, we compute the collimation-corrected peak luminosity Lγ, and find that it correlates with Epeak. This correlation has, however, a scatter larger than that of the correlation between Epeak and Eγ (the time-integrated emitted energy, corrected for collimation), which we ascribe to the fact that the opening angle is estimated through the global energetics. We have then selected a large sample of 442 GRBs with pseudo- redshifts, derived through the lag-luminosity relation, to test the existence of the Liso-Epeak correlation. With this sample we also explore the possibility of a correlation between time-resolved quantities, namely Lpiso and the peak energy at the peak of emission Eppeak.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
