247 citations · 330 across the 7 of their papers we have counts for
7 papers
The First Global e-Competition on Astronomy and Astrophysics
Ioana A. Zelko, Charles Barclay, Tonis Eenmae +7
The first Global e-Competition on Astronomy and Astrophysics was held online in September-October 2020 as a replacement for the International Olympiad on Astronomy and Astrophysics…
Spectral Modeling of GRB Pulses
H. Papathanassiou
The energy spectra of pulses of GRBs are modeled for synchrotron and multiple self-inverse Compton scatterings from a population of thermal and non-thermal s. The contribution…
Photon Scattering by Relativistic Flows in Schwarzschild Spacetimes. I. The Generation of Power-Law Spectra
H. Papathanassiou, D. Psaltis
We study the spectra generated as a result of bulk Comptonization by relativistic electrons in radial flows onto compact objects. We solve numerically the general-relativistic radi…
Spectral Evolution of Gamma Ray Bursts and the "Death Line" of the Synchrotron Shock Model
H. Papathanassiou
I calculate spectral evolution series for pulses of GRBs, in the BATSE spectral range, for continuous particle injection and cooling by synchrotron, inverse Compton, and adiabatic…
Probing the Emission Sites of GRBs
H. Papathanassiou
I present a computationally efficient way to account for synchrotron and its inverse Compton scattered emission along with the resulting radiative losses, in a self-consistent way,…
Spectra of Unsteady Wind Models of Gamma-Ray Bursts
Hara Papathanassiou, Peter Meszaros
We calculate the spectra expected from unsteady relativistic wind models of gamma-ray bursts, suitable for events of arbitrary duration. The spectral energy distribution of the bur…