@article{2983a464d0af4548b1c1f61718ffd120,
title = "Discovery of GeV Gamma-Ray Emission from Pulsar Wind Nebula Kes 75 and PSR J1846-0258",
abstract = "We report the detection of gamma-ray emission from pulsar wind nebula (PWN) Kes 75 and PSR J1846−0258. Through modeling the spectral energy distribution incorporating the new Fermi-LAT data, we find that the observed gamma-ray emission is likely a combination of both the PWN and pulsar magnetosphere. The spectral shape of this magnetospheric emission is similar to the γ-ray spectrum of rotation-powered pulsars detected by Fermi-LAT, and the results from our best-fit model suggest that the pulsar{\textquoteright}s magnetospheric emission accounts for 1% of the current spin-down luminosity. Prior works attempted to characterize the properties of this system and found a low supernova (SN) explosion energy and low SN ejecta mass. We reanalyze the broadband emission incorporating the new Fermi emission and compare the implications of our results to prior reports. The best-fit gamma-ray emission model suggests a second very hot photon field possibly generated by the stellar wind of a Wolf-Rayet star embedded within the nebula, which supports the low ejecta mass found for the progenitor in prior reports and here in the scenario of binary mass transfer.",
author = "Straal, {Samayra M.} and Gelfand, {Joseph D.} and Eagle, {Jordan L.}",
note = "Funding Information: The authors would like to thank the anonymous referee for their useful comments. The contributions of J.D.G. and S.M.S. were supported by NASA grant NNX17AL74G issued through the NNH16ZDA001N Astrophysics Data Analysis Program (ADAP). S.M.S. thanks the Fermi summer school for teaching Fermi-LAT specific analysis. J.D.G. would like to thank Eric Gotthelf, Samar Safi-Harb, Tea Temim, Maxim Lyutikov, and Jacco Vink for helpful discussions. We also acknowledge the use of the NASA Astrophysics Data Service (ADS). Funding Information: The authors would like to thank the anonymous referee for their useful comments. The contributions of J.D.G. and S.M.S. were supported by NASA grant NNX17AL74G issued through the NNH16ZDA001N Astrophysics Data Analysis Program (ADAP). S.M.S. thanks the Fermi summer school for teaching Fermi-LAT specific analysis. J.D.G. would like to thank Eric Gotthelf, Samar Safi-Harb, Tea Temim, Maxim Lyutikov, and Jacco Vink for helpful discussions. We also acknowledge the use of the NASA Astrophysics Data Service (ADS). Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",
year = "2023",
month = jan,
day = "1",
doi = "10.3847/1538-4357/aca1a9",
language = "English (US)",
volume = "942",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",
}