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H.E.S.S. discovery of very-high-energy gamma-ray emission of PKS 1440-389
Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.ORCID iD: 0000-0002-2378-0893
Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.ORCID iD: 0000-0002-2115-2930
North-West University, South Africa.
Université Paris Diderot, France.
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2015 (English)In: Proceedings of Science, SISSA , 2015Conference paper, Published paper (Other academic)
Abstract [en]

Blazars are the most abundant class of known extragalactic very-high-energy (VHE, E>100 GeV) gamma-ray sources. However, one of the biggest difficulties in investigating their VHE emission resides in their limited number, since less than 60 of them are known by now. In this contribution we report on H.E.S.S. observations of the BL Lac object PKS 1440-389. This source has been selected as target for H.E.S.S. based on its high-energy gamma-ray properties measured by Fermi-LAT. The extrapolation of this bright, hard-spectrum gamma-ray blazar into the VHE regime made a detection on a relatively short time scale very likely, despite its uncertain redshift. H.E.S.S. observations were carried out with the 4-telescope array from February to May 2012 and resulted in a clear detection of the source. Contemporaneous multi-wavelength data are used to construct the spectral energy distribution of PKS 1440-389 which can be described by a simple one-zone synchrotron-self Compton model

Place, publisher, year, edition, pages
SISSA , 2015.
Keyword [en]
Astrophysics - High Energy Astrophysical Phenomena
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-46333Scopus ID: 2-s2.0-84988728272OAI: oai:DiVA.org:lnu-46333DiVA: diva2:854172
Conference
34th International Cosmic Ray Conference (ICRC2015), 30 July- 6 August, 2015, The Hague, The Netherlands
Available from: 2015-09-16 Created: 2015-09-16 Last updated: 2017-05-09Bibliographically approved

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Prokoph, HeikeBecherini, Yvonne
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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