Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant

V. A. Acciari , E. Aliu , T. Arlen , T. Aune , M. Beilicke , W. Benbow , S. M. Bradbury , J. H. Buckley

show 77 more authors

V. Bugaev K. Byrum A. Cannon A. Cesarini L. Ciupik E. Collins-Hughes W. Cui R. Dickherber C. Duke M. Errando J. P. Finley G. Finnegan L. Fortson A. Furniss N. Galante D. Gall G. H. Gillanders S. Godambe S. Griffin J. Grube R. Guenette G. Gyuk D. Hanna J. Holder J. P. Hughes C. M. Hui T. B. Humensky P. Kaaret N. Karlsson M. Kertzman D. Kieda H. Krawczynski F. Krennrich M. J. Lang S. LeBohec A. S Madhavan G. Maier P. Majumdar S. McArthur A. McCann P. Moriarty R. Mukherjee R. A. Ong M. Orr A. N. Otte D. Pandel N. Park J. S. Perkins M. Pohl J. Quinn K. Ragan L. C. Reyes P. T. Reynolds E. Roache H. J. Rose D. B. Saxon M. Schroedter G. H. Sembroski G. Demet Senturk P. Slane A. W. Smith G. Te\v{s}i\'c M. Theiling S. Thibadeau K. Tsurusaki A. Varlotta V. V. Vassiliev S. Vincent M. Vivier S. P. Wakely J. E. Ward T. C. Weekes A. Weinstein T. Weisgarber D. A. Williams M. Wood B. Zitzer

Authors on Pith no claims yet

classification 🌌 astro-ph.HE

keywords emissiongammaremnantprimesupernovaabovediscoveryfield

0 comments

read the original abstract

We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tycho's supernova remnant. Observations performed in the period 2008-2010 with the VERITAS ground-based gamma-ray observatory reveal weak emission coming from the direction of the remnant, compatible with a point source located at $00^{\rm h} \ 25^{\rm m} \ 27.0^{\rm s},\ +64^{\circ} \ 10^{\prime} \ 50^{\prime\prime}$ (J2000). The TeV photon spectrum measured by VERITAS can be described with a power-law $dN/dE = C(E/3.42\;\textrm{TeV})^{-\Gamma}$ with $\Gamma = 1.95 \pm 0.51_{stat} \pm 0.30_{sys}$ and $C = (1.55 \pm 0.43_{stat} \pm 0.47_{sys}) \times 10^{-14}$ cm$^{-2}$s$^{-1}$TeV$^{-1}$. The integral flux above 1 TeV corresponds to $\sim 0.9%$ percent of the steady Crab Nebula emission above the same energy, making it one of the weakest sources yet detected in TeV gamma rays. We present both leptonic and hadronic models which can describe the data. The lowest magnetic field allowed in these models is $\sim 80 \mu$G, which may be interpreted as evidence for magnetic field amplification.

This paper has not been read by Pith yet.

discussion (0)

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

On The Nonthermal Power Laws In Magnetized Turbulent Plasmas
physics.plasm-ph 2026-05 unverdicted novelty 4.0

A scaling law for nonthermal power-law tails in magnetized turbulent plasmas is derived from particle transport principles and confirmed by PIC simulations with escape, with applications to black hole coronae.