Energy-Dependent Morphological Study of HESS J1857+026 with Fermi-LAT
Full text:
pdf
Pre-published on:
July 05, 2021
Published on:
March 18, 2022
Abstract
HESS J1857+026 is an extended gamma-ray source discovered by H.E.S.S., and considered to be a pulsar wind nebula candidate associated with PSR J1856+0245. Taking advantage of 11 years of Fermi-LAT data, we re-analyze the GeV gamma-ray emission from HESS J1857+026, and find that the GeV emission from this region is composed of two gamma-ray sources. The harder component Src T is coincident with HESS J1857+026, nevertheless the origin of the soft component Src A need further exploration. We present the results of energy-dependent extension analysis of Src T. HESS J1857+026 is a good target for LHAASO, CTA and HAWC. Future GeV and TeV observations will be helpful to investigate the particle transport mechanisms within this source.
DOI: https://doi.org/10.22323/1.395.0627
How to cite
Metadata are provided both in article format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in proceeding format which is more detailed and complete.
Open Access
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.