First results of eta carinae observations with H.E.S.S. II

H.E.S.S. Collaboration

First results of eta carinae observations with H.E.S.S. II

H.E.S.S. Collaboration

University of Potsdam
c/o DESY
Max-Planck-Institut für Kernphysik
Medical University of Innsbruck

Research output: Contribution to journal › Conference article › peer-review

Abstract

Eta Carinae is a colliding-wind binary that shows non-thermal emission from hard X-rays to high-energy γ-rays. The γ-ray spectrum exhibits two spectral components, where the high-energy component extends up to 300 GeV. Previous observations of Eta Carinae with the High Energy Stereoscopic System (H.E.S.S.) resulted in upper limits. With the addition of the large 28-m central telescope to the H.E.S.S. array in 2012 the lower bound on the energy range has significantly been reduced. This lowers the energy threshold of the analysis compared to the published results due to the improved instrument sensitivity at energies below 400 GeV. Eta Carinae has been regularly observed in the following years with H.E.S.S. II. Here we report on the first results of Eta Carinae observations, which also cover the periastron passage in 2014 - the time of maximum γ-ray emission seen in GeV γ-rays with Fermi-LAT.

Original language	English
Journal	Proceedings of Science
Publication status	Published - 1 Jan 2017
Externally published	Yes
Event	35th International Cosmic Ray Conference, ICRC 2017 - Bexco, Busan, Korea, Republic of Duration: 10 Jul 2017 → 20 Jul 2017

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@article{98902d5b3a644d5581ed2e97349e5538,

title = "First results of eta carinae observations with H.E.S.S. II",

abstract = "Eta Carinae is a colliding-wind binary that shows non-thermal emission from hard X-rays to high-energy γ-rays. The γ-ray spectrum exhibits two spectral components, where the high-energy component extends up to 300 GeV. Previous observations of Eta Carinae with the High Energy Stereoscopic System (H.E.S.S.) resulted in upper limits. With the addition of the large 28-m central telescope to the H.E.S.S. array in 2012 the lower bound on the energy range has significantly been reduced. This lowers the energy threshold of the analysis compared to the published results due to the improved instrument sensitivity at energies below 400 GeV. Eta Carinae has been regularly observed in the following years with H.E.S.S. II. Here we report on the first results of Eta Carinae observations, which also cover the periastron passage in 2014 - the time of maximum γ-ray emission seen in GeV γ-rays with Fermi-LAT.",

author = "\{H.E.S.S. Collaboration\} and E. Leser and S. Ohm and M. F{\"u}{\ss}ling and \{De Naurois\}, M. and K. Egberts and P. Bordas and S. Klepser and O. Reimer and A. Reimer and J. Hinton",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND 4.0).; 35th International Cosmic Ray Conference, ICRC 2017 ; Conference date: 10-07-2017 Through 20-07-2017",

year = "2017",

month = jan,

day = "1",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

}

TY - JOUR

T1 - First results of eta carinae observations with H.E.S.S. II

AU - H.E.S.S. Collaboration

AU - Leser, E.

AU - Ohm, S.

AU - Füßling, M.

AU - De Naurois, M.

AU - Egberts, K.

AU - Bordas, P.

AU - Klepser, S.

AU - Reimer, O.

AU - Reimer, A.

AU - Hinton, J.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND 4.0).

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Eta Carinae is a colliding-wind binary that shows non-thermal emission from hard X-rays to high-energy γ-rays. The γ-ray spectrum exhibits two spectral components, where the high-energy component extends up to 300 GeV. Previous observations of Eta Carinae with the High Energy Stereoscopic System (H.E.S.S.) resulted in upper limits. With the addition of the large 28-m central telescope to the H.E.S.S. array in 2012 the lower bound on the energy range has significantly been reduced. This lowers the energy threshold of the analysis compared to the published results due to the improved instrument sensitivity at energies below 400 GeV. Eta Carinae has been regularly observed in the following years with H.E.S.S. II. Here we report on the first results of Eta Carinae observations, which also cover the periastron passage in 2014 - the time of maximum γ-ray emission seen in GeV γ-rays with Fermi-LAT.

AB - Eta Carinae is a colliding-wind binary that shows non-thermal emission from hard X-rays to high-energy γ-rays. The γ-ray spectrum exhibits two spectral components, where the high-energy component extends up to 300 GeV. Previous observations of Eta Carinae with the High Energy Stereoscopic System (H.E.S.S.) resulted in upper limits. With the addition of the large 28-m central telescope to the H.E.S.S. array in 2012 the lower bound on the energy range has significantly been reduced. This lowers the energy threshold of the analysis compared to the published results due to the improved instrument sensitivity at energies below 400 GeV. Eta Carinae has been regularly observed in the following years with H.E.S.S. II. Here we report on the first results of Eta Carinae observations, which also cover the periastron passage in 2014 - the time of maximum γ-ray emission seen in GeV γ-rays with Fermi-LAT.

M3 - Conference article

AN - SCOPUS:85046061277

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 35th International Cosmic Ray Conference, ICRC 2017

Y2 - 10 July 2017 through 20 July 2017

ER -

First results of eta carinae observations with H.E.S.S. II

Abstract

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