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MAGIC observations of variable very-high-energy gamma-ray emission from PKS1510-089 during May 2015 outburst
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2017 (English)In: Proceedings of Science, Sissa Medialab Srl , 2017Conference paper, Published paper (Refereed)
Abstract [en]

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. 

Place, publisher, year, edition, pages
Sissa Medialab Srl , 2017.
Keywords [en]
Cosmic rays, Cosmology, Germanium compounds, Gamma-ray emission, Gamma-ray flux, Multi-wavelengths, Red shift, Spectral properties, Spectrum radio quasar, Time-scales, Very high energies, Gamma rays
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-236847Scopus ID: 2-s2.0-85046057223OAI: oai:DiVA.org:kth-236847DiVA, id: diva2:1273197
Conference
35th International Cosmic Ray Conference, ICRC 2017, 10 July 2017 through 20 July 2017
Funder
Swedish Research CouncilKnut and Alice Wallenberg FoundationSwedish National Space Board
Note

QC 20181220

Available from: 2018-12-20 Created: 2018-12-20 Last updated: 2018-12-20Bibliographically approved

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Larsson, Stefan

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