VERITAS and Fermi-LAT Observations of TeV Gamma-Ray Sources Discovered by HAWC in the 2HWC Catalog

Journal article


Publication Details

Author(s): Abeysekara AU, Archer A, Benbow W, Bird R, Brose R, Buchovecky M, Buckley JH, Bugaev V, Chromey AJ, Connolly MP, Cui W, Daniel MK, Falcone A, Feng Q, Finley JP, Fortson L, Furniss A, Huetten M, Hanna D, Hervet O, Holder J, Hughes G, Humensky TB, Johnson CA, Kaaret P, Kar P, Kertzman M, Kieda D, Krause M, Krennrich F, Kumar S, Lang MJ, Lin TTY, Mcarthur S, Moriarty P, Mukherjee R, O'Brien S, Ong RA, Otte AN, Park N, Petrashyk A, Pohl M, Pueschel E, Quinn J, Ragan K, Reynolds PT, Richards GT, Roache E, Rulten C, Sadeh I, Santander M, Sembroski GH, Shahinyan K, Sushch I, Tyler J, Wakely SP, Weinstein A, Wells RM, Wilcox P, Wilhelm A, Williams DA, Williamson TJ, Zitzer B, Abdollahi S, Ajello M, Baldini L, Barbiellini G, Bastieri D, Bellazzini R, Berenji B, Bissaldi E, Blandford RD, Bonino R, Bottacini E, Brandt TJ, Bruel P, Buehler R, Cameron RA, Caputo R, Caraveo PA, Castro D, Cavazzuti E, Charles E, Chiaro G, Ciprini S, Cohen-Tanugi J, Costantin D, Cutini S, D'Ammando F, De Palma F, Di Lalla N, Di Mauro M, Di Venere L, Dominguez A, Favuzzi C, Fegan SJ, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Green D, Grenier IA, Guillemot L, Guiriec S, Hays E, Hewitt JW, Horan D, Johannesson G, Kensei S, Kuss M, Larsson S, Latronico L, Lemoine-Goumard M, Li J, Longo F, Loparco F, Lovellette MN, Lubrano P, Magill JD, Maldera S, Mazziotta MN, Mcenery JE, Michelson PF, Mitthumsiri W, Mizuno T, Monzani ME, Morselli A, Moskalenko IV, Negro M, Nuss E, Ojha R, Omodei N, Orienti M, Orlando E, Palatiello M, Paliya VS, Paneque D, Perkins JS, Persic M, Pesce-Rollins M, Petrosian V, Piron F, Porter TA, Principe G, Raino S, Rando R, Rani B, Razzano M, Razzaque S, Reimer A, Reimer O, Reposeur T, Sgro C, Siskind EJ, Spandre G, Spinelli P, Suson DJ, Tajima H, Thayer JB, Thompson DJ, Torres DF, Tosti G, Troja E, Valverde J, Vianello G, Vogel M, Wood K, Yassine M, Alfaro R, Alvarez C, Alvarez JD, Arceo R, Arteaga-Velazquez JC, Rojas DA, Ayala Solares HA, Becerril A, Belmont-Moreno E, Benzvi SY, Bernal A, Braun J, Brisbois C, Caballero-Mora KS, Capistran T, Carraminana A, Casanova S, Castillo M, Cotti U, Cotzomi J, Coutino De Leon S, De Leon C, De La Fuente E, Dichiara S, Dingus BL, Duvernois MA, Diaz-Velez JC, Engel K, Enriquez-Rivera O, Fiorino DW, Fleischhack H, Fraija N, Garcia-Gonzalez JA, Garfias F, Gonzalez Munoz A, Gonzalez MM, Goodman JA, Hampel-Arias Z, Harding JP, Hernandez S, Hernandez-Almada A, Hona B, Hueyotl-Zahuantitla F, Hui CM, Huntemeyer P, Iriarte A, Jardin-Blicq A, Joshi V, Kaufmann S, Lara A, Lauer RJ, Lee WH, Lennarz D, Leon Vargas H, Linnemann JT, Longinotti AL, Luis-Raya G, Luna-Garcia R, Lopez-Coto R, Malone K, Marinelli SS, Martinez O, Martinez-Castellanos I, Martinez-Castro J, Martinez-Huerta H, Matthews JA, Miranda-Romagnoli P, Moreno E, Mostafa M, Nayerhoda A, Nellen L, Newbold M, Nisa MU, Noriega-Papaqui R, Pelayo R, Pretz J, Perez-Perez EG, Ren Z, Rho CD, Riviere C, Rosa-Gonzalez D, Rosenberg M, Ruiz-Velasco E, Salazar H, Greus FS, Sandoval A, Schneider M, Arroyo MS, Sinnis G, Smith AJ, Springer RW, Surajbali P, Taboada I, Tibolla O, Tollefson K, Torres I, Ukwatta TN, Villasenor L, Weisgarber T, Westerhoff S, Wisher IG, Wood J, Yapici T, Yodh G, Zepeda A, Zhou H
Journal: Astrophysical Journal
Publisher: IOP PUBLISHING LTD
Publication year: 2018
Volume: 866
Journal issue: 1
ISSN: 0004-637X
eISSN: 1538-4357


Abstract

The High Altitude Water Cherenkov (HAWC) collaboration recently published their 2HWC catalog, listing 39 very high energy (VHE; >100 GeV) gamma-ray sources based on 507 days of observation. Among these, 19 sources are not associated with previously known teraelectronvolt (TeV) gamma-ray sources. We have studied 14 of these sources without known counterparts with VERITAS and Fermi-LAT. VERITAS detected weak gamma-ray emission in the 1 TeV-30 TeV band in the region of DA 495, a pulsar wind nebula coinciding with 2HWC J1953+294, confirming the discovery of the source by HAWC. We did not find any counterpart for the selected 14 new HAWC sources from our analysis of Fermi-LAT data for energies higher than 10 GeV. During the search, we detected gigaelectronvolt (GeV) gamma-ray emission coincident with a known TeV pulsar wind nebula, SNR G54.1+0.3 (VER J1930+188), and a 2HWC source, 2HWC J1930+188. The fluxes for isolated, steady sources in the 2HWC catalog are generally in good agreement with those measured by imaging atmospheric Cherenkov telescopes. However, the VERITAS fluxes for SNR G54.1+0.3, DA 495, and TeV J2032+4130 are lower than those measured by HAWC, and several new HAWC sources are not detected by VERITAS. This is likely due to a change in spectral shape, source extension, or the influence of diffuse emission in the source region.


FAU Authors / FAU Editors

Funk, Stefan Prof. Dr.
Lehrstuhl für Physik
Principe, Giacomo
Lehrstuhl für Physik


How to cite

APA:
Abeysekara, A.U., Archer, A., Benbow, W., Bird, R., Brose, R., Buchovecky, M.,... Zhou, H. (2018). VERITAS and Fermi-LAT Observations of TeV Gamma-Ray Sources Discovered by HAWC in the 2HWC Catalog. Astrophysical Journal, 866(1). https://dx.doi.org/10.3847/1538-4357/aade4e

MLA:
Abeysekara, A. U., et al. "VERITAS and Fermi-LAT Observations of TeV Gamma-Ray Sources Discovered by HAWC in the 2HWC Catalog." Astrophysical Journal 866.1 (2018).

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Last updated on 2019-23-08 at 08:33