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MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sources
Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland..
KTH, Centra, Nordic Institute for Theoretical Physics NORDITA.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.;Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy..
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Antal upphovsmän: 3432019 (Engelska)Ingår i: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 485, nr 1, s. 356-366Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The HAWC Collaboration released the 2HWC catalogue of TeV sources, in which 19 show no association with any known high-energy (HE; E greater than or similar to 10 GeV) or very-high-energy (VHE; E greater than or similar to 300 GeV) sources. This catalogue motivated follow-up studies by both the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) and Fermi-LAT (Large Area Telescope) observatories with the aim of investigating gamma-ray emission over a broad energy band. In this paper, we report the results from the first joint work between High Altitude Water Cherenkov (HAWC), MAGIC, and Fermi-LAT on three unassociated HAWC sources: 2HWC J2006+341, 2HWC J1907+084*, and 2HWC J1852+013*. Although no significant detection was found in the HE and VHE regimes, this investigation shows that a minimum 1 degrees extension (at 95 per cent confidence level) and harder spectrum in the GeV than the one extrapolated from HAWC results are required in the case of 2HWC J1852+013*, whilst a simply minimum extension of 0.16 degrees (at 95 per cent confidence level) can already explain the scenario proposed by HAWC for the remaining sources. Moreover, the hypothesis that these sources are pulsar wind nebulae is also investigated in detail.

Ort, förlag, år, upplaga, sidor
OXFORD UNIV PRESS , 2019. Vol. 485, nr 1, s. 356-366
Nyckelord [en]
pulsars: general, gamma rays: general, astroparticle physics
Nationell ämneskategori
Astronomi, astrofysik och kosmologi
Identifikatorer
URN: urn:nbn:se:kth:diva-252389DOI: 10.1093/mnras/stz089ISI: 000466786400024Scopus ID: 2-s2.0-85072245247OAI: oai:DiVA.org:kth-252389DiVA, id: diva2:1337501
Konferens
ARK CJ, 2017, APJ, V834, PNIL_ wood W. B., 2009, ASTROPHYSICAL JOURNAL, V697, P1071 pez-Coto R., 2017, 35th International Cosmic Ray Conference, Proceedings of Science, V301, P732 min V. P., 1994, ASTROPARTICLE PHYSICS, V2, P137 nin R., 2013, Proc. 33st International Cosmic Ray Conference, Rio de Janeiro, Brasil,
Anmärkning

QC 20190715

Tillgänglig från: 2019-07-15 Skapad: 2019-07-15 Senast uppdaterad: 2019-10-04Bibliografiskt granskad

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Jóhannesson, GudlaugurLarsson, Stefan

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