The Spectrum of the Crab Nebula and Highest Energy Photons Measured by HAWC

the HAWC Collaboration

The Spectrum of the Crab Nebula and Highest Energy Photons Measured by HAWC

the HAWC Collaboration

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

Abstract

HAWC has developed new energy algorithms using an artificial neural network for event-by-event reconstruction of Very High Energy (VHE) primary gamma ray energies. Unlike previous estimation methods for HAWC photons, these estimate photon energies with good energy precision and accuracy in a range from 1 TeV to greater than 100 TeV. Photon emission at the highest energies is of interest in understanding acceleration mechanisms of astrophysical sources and where the acceleration might cut off. We apply the new HAWC reconstruction to present the preliminary measurement of the highest energies at which photons are emitted by the Crab Nebula and by six additional sources in the galactic plane which emit above 50 TeV. We have observed photons above 200 TeV at 95% confidence. We also compare fits to the HAWC Crab spectrum with other measurements and theoretical models of the Crab spectrum.

Original language	English
Article number	723
Journal	Proceedings of Science
Volume	358
Publication status	Published - 2 Jul 2021
Externally published	Yes
Event	36th International Cosmic Ray Conference, ICRC 2019 - Madison, United States Duration: 24 Jul 2019 → 1 Aug 2019

Bibliographical note

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

All Science Journal Classification (ASJC) codes

General

Cite this

@article{cd505d524a9640d5a9ccd191eb26170c,

title = "The Spectrum of the Crab Nebula and Highest Energy Photons Measured by HAWC",

abstract = "HAWC has developed new energy algorithms using an artificial neural network for event-by-event reconstruction of Very High Energy (VHE) primary gamma ray energies. Unlike previous estimation methods for HAWC photons, these estimate photon energies with good energy precision and accuracy in a range from 1 TeV to greater than 100 TeV. Photon emission at the highest energies is of interest in understanding acceleration mechanisms of astrophysical sources and where the acceleration might cut off. We apply the new HAWC reconstruction to present the preliminary measurement of the highest energies at which photons are emitted by the Crab Nebula and by six additional sources in the galactic plane which emit above 50 TeV. We have observed photons above 200 TeV at 95% confidence. We also compare fits to the HAWC Crab spectrum with other measurements and theoretical models of the Crab spectrum.",

author = "{the HAWC Collaboration} and Linnemann, {J. T.} and Harding, {J. P.} and J. Lundeen and S. Marinelli and H. Mart{\'i}nez-Huerta",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0); 36th International Cosmic Ray Conference, ICRC 2019 ; Conference date: 24-07-2019 Through 01-08-2019",

year = "2021",

month = jul,

day = "2",

language = "English",

volume = "358",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - The Spectrum of the Crab Nebula and Highest Energy Photons Measured by HAWC

AU - the HAWC Collaboration

AU - Linnemann, J. T.

AU - Harding, J. P.

AU - Lundeen, J.

AU - Marinelli, S.

AU - Martínez-Huerta, H.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

PY - 2021/7/2

Y1 - 2021/7/2

N2 - HAWC has developed new energy algorithms using an artificial neural network for event-by-event reconstruction of Very High Energy (VHE) primary gamma ray energies. Unlike previous estimation methods for HAWC photons, these estimate photon energies with good energy precision and accuracy in a range from 1 TeV to greater than 100 TeV. Photon emission at the highest energies is of interest in understanding acceleration mechanisms of astrophysical sources and where the acceleration might cut off. We apply the new HAWC reconstruction to present the preliminary measurement of the highest energies at which photons are emitted by the Crab Nebula and by six additional sources in the galactic plane which emit above 50 TeV. We have observed photons above 200 TeV at 95% confidence. We also compare fits to the HAWC Crab spectrum with other measurements and theoretical models of the Crab spectrum.

AB - HAWC has developed new energy algorithms using an artificial neural network for event-by-event reconstruction of Very High Energy (VHE) primary gamma ray energies. Unlike previous estimation methods for HAWC photons, these estimate photon energies with good energy precision and accuracy in a range from 1 TeV to greater than 100 TeV. Photon emission at the highest energies is of interest in understanding acceleration mechanisms of astrophysical sources and where the acceleration might cut off. We apply the new HAWC reconstruction to present the preliminary measurement of the highest energies at which photons are emitted by the Crab Nebula and by six additional sources in the galactic plane which emit above 50 TeV. We have observed photons above 200 TeV at 95% confidence. We also compare fits to the HAWC Crab spectrum with other measurements and theoretical models of the Crab spectrum.

UR - http://www.scopus.com/inward/record.url?scp=85214078133&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85214078133&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85214078133

SN - 1824-8039

VL - 358

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 723

T2 - 36th International Cosmic Ray Conference, ICRC 2019

Y2 - 24 July 2019 through 1 August 2019

ER -

The Spectrum of the Crab Nebula and Highest Energy Photons Measured by HAWC

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this