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8.9.2015: Astrodebata o galaktičnih izvorih, ki so podobni izbruhom sevanja gama

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Logo.ADA search for Galactic transients disguised as gamma-ray bursts

Novo sezono astrodebate bo otvorila gostja Aurora Clerici (University of Ferrara, Italija) s predavanjem o galaktičnih izvorih, ki so v določenih lastnostih podobni izbruhom sevanja gama. Vabljeni v torek, 8. septembra 2015, ob 14. uri v predavalnico F6 na Fakulteti za matematiko in fiziko, Jadranska 19, Ljubljana.

Prejšnja predavanja so na razpolago na spletni strani Astrodebate.

Predavanje bo v angleščini.

Povzetek:

A significant fraction of cosmological gamma-ray bursts (GRBs) are characterised by a fast rise and exponential decay (FRED) temporal structure. This is not a distinctive feature of this class, since it is observed in many Galactic transients and is likely descriptive of a sudden release of energy followed by a diffusion process.
We searched for possible Galactic intruders disguised as FRED GRBs in the Swift catalogue. We tested the degree of isotropy through the dipole and the quadrupole moment distributions. In addition, we searched for possible indicators of a Galactic origin among the spectral and temporal properties of individual GRBs.
In this talk, we will present the results of our analysis.

For more information see http://arxiv.org/abs/1508.04898

 

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