MAGIC observations of variable very-high-energy gamma-ray emission from PKS1510-089 during May 2015 outburst Conference

Sitarek, J, González, JB, Ramazani, VF et al. (2017). MAGIC observations of variable very-high-energy gamma-ray emission from PKS1510-089 during May 2015 outburst .

cited authors

  • Sitarek, J; González, JB; Ramazani, VF; Lindfors, E; Pedaletti, G; Tavecchio, F; Acosta, MV; Larsson, S; Baliyan, K; Kaur, N; Sameer; Jorstad, S; Raiteri, C

authors

abstract

  • PKS1510-089 is a flat spectrum radio quasar located at a redshift of 0.36. It is one of only a few such sources detected in very-high-energy (VHE, >100 GeV) gamma rays. Though PKS1510-089 is highly variable at GeV energies, until recently no variability has been observed in the VHE band. In 2015 May PKS1510-089 showed a high state in optical and in the GeV range. A VHE gamma-ray flare was detected with MAGIC at that time, showing the first instance of VHE gamma-ray flux variability on the time scale of days in this source. We will present the MAGIC results from this observation, discuss their temporal and spectral properties in the multi-wavelength context and present modelling of such emission in the external Compton scenario.

publication date

  • January 1, 2017