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

Abeysekara, A. U.; Archer, A.; Benbow, Wystan; Bird, Ralph; Brose, Robert; Buchovecky, M.; Buckley, J. H.; Bugaev, V.; Chromey, A. J.; Connolly, M. P.; Cui, Wei; Daniel, M. K.; Falcone, A.; Feng, Qi; Finley, John P.; Fortson, L.; Furniss, Amy; Huetten, M.; Hanna, David; Hervet, O.; Holder, J.; Hughes, G.; Humensky, T. B.; Johnson, Caitlin A.; Kaaret, Philip; Kar, P.; Kertzman, M.; Kieda, David; Krause, M.; Krennrich, F.; Kumar, S.; Lang, M. J.; Lin, T. T. Y.; McArthur, S.; Moriarty, P.; Mukherjee, Reshmi; Ong, R. A.; Otte, Adam Nepomuk; Park, Nahee; Petrashyk, A.; Pohl, Martin; Pueschel, Elisa; Quinn, J.; Ragan, K.; Reynolds, P. T.; Richards, Gregory T.; Roache, E.; Rulten, C.; Sadeh, I.; Santander, Marcos; Sembroski, G. H.; Shahinyan, Karlen; Sushch, I.; Tyler, J.; Wakely, S. P.; Weinstein, A.; Wells, R. M.; Wilcox, P.; Wilhelm, Alina; Williams, D. A.; Williamson, T. J.; Zitzer, B.; Abdollahi, S.; Ajello, Marco; Baldini, Luca; Barbiellini, G.; Bastieri, Denis; Bellazzini, Ronaldo; Berenji, B.; Bissaldi, Elisabetta; Blandford, R. D.; Bonino, R.; Bottacini, E.; Brandt, Terri J.; Bruel, P.; Buehler, R.; Cameron, R. A.; Caputo, R.; Caraveo, P. A.; Castro, D.; Cavazzuti, E.; Charles, Eric; Chiaro, G.; Ciprini, S.; Cohen-Tanugi, Johann; Costantin, D.; Cutini, S.; de Palma, F.; Di Lalla, N.; Di Mauro, M.; Di Venere, L.; Dominguez, A.; Favuzzi, C.; Fegan, S. J.; Franckowiak, Anna; Fukazawa, Yasushi; Funk, Stefan; Fusco, Piergiorgio; Gargano, Fabio; Gasparrini, Dario; Giglietto, Nicola; Giordano, F.; Giroletti, Marcello; Green, D.; Grenier, I. A.; Guillemot, L.; Guiriec, Sylvain; Hays, Elizabeth; Hewitt, John W.; Horan, D.; Johannesson, G.; Kensei, S.; Kuss, M.; Larsson, Stefan; Latronico, L.; Lemoine-Goumard, Marianne; Li, J.; Longo, Francesco; Loparco, Francesco; Lovellette, M. N.; Lubrano, Pasquale; Magill, Jeffrey D.; Maldera, Simone; Mazziotta, Mario Nicola; McEnery, J. E.; Michelson, P. F.; Mitthumsiri, W.; Mizuno, Tsunefumi; Monzani, Maria Elena; Morselli, Aldo; Moskalenko, Igor V.; Negro, M.; Nuss, E.; Ojha, R.; Omodei, Nicola; Orienti, M.; Orlando, E.; Palatiello, M.; Paliya, Vaidehi S.; Paneque, D.; Perkins, Jeremy S.; Persic, M.; Pesce-Rollins, Melissa; Petrosian, Vahe'; Piron, F.; Porter, Troy A.; Principe, G.; Raino, S.; Rando, Riccardo; Rani, B.; Razzano, Massimilano; Razzaque, Soebur; Reimer, A.; Reimer, Olaf; Reposeur, T.; Sgro, C.; Siskind, E. J.; Spandre, Gloria; Spinelli, P.; Suson, D. J.; Tajima, Hiroyasu; Thayer, J. B.; Thompson, David J.; Torres, Diego F.; Tosti, Gino; Troja, Eleonora; Valverde, J.; Vianello, Giacomo; Vogel, M.; Wood, K.; Yassine, M.; Alfaro, R.; Alvarez, C.; Alvarez, J. D.; Arceo, R.; Arteaga-Velazquez, J. C.; Rojas, D. Avila; Ayala Solares, H. A.; Becerril, A.; Belmont-Moreno, E.; BenZvi, S. Y.; Bernal, A.; Braun, J.; Brisbois, C.; Caballero-Mora, K. S.; Capistran, T.; Carraminana, A.; Casanova, Sabrina; Castillo, M.; Cotti, U.; Cotzomi, J.; Coutino de Leon, S.; De Leon, C.; De la Fuente, E.; Dichiara, S.; Dingus, B. L.; DuVernois, M. A.; Diaz-Velez, J. C.; Engel, K.; Enriquez-Rivera, O.; Fiorino, D. W.; Fleischhack, H.; Fraija, N.; Garcia-Gonzalez, J. A.; Garfias, F.; Gonzalez Munoz, A.; Gonzalez, M. M.; Goodman, J. A.; Hampel-Arias, Z.; Harding, J. P.; Hernandez, S.; Hernandez-Almada, A.; Hona, B.; Hueyotl-Zahuantitla, F.; Hui, C. M.; Huntemeyer, P.; Iriarte, A.; Jardin-Blicq, A.; Joshi, V.; Kaufmann, S.; Lara, A.; Lauer, R. J.; Lee, W. H.; Lennarz, D.; Leon Vargas, H.; Linnemann, J. T.; Longinotti, A. L.; Luis-Raya, G.; Luna-Garcia, R.; Lopez-Coto, R.; Malone, K.; Marinelli, S. S.; Martinez, O.; Martinez-Castellanos, I.; Martinez-Castro, J.; Martinez-Huerta, H.; Matthews, J. A.; Miranda-Romagnoli, P.; Moreno, E.; Mostafa, M.; Nayerhoda, A.; Nellen, L.; Newbold, M.; Nisa, M. U.; Noriega-Papaqui, R.; Pelayo, R.; Pretz, J.; Perez-Perez, E. G.; Ren, Z.; Rho, C. D.; Riviere, C.; Rosa-Gonzalez, D.; Rosenberg, M.; Ruiz-Velasco, E.; Salazar, H.; Greus, F. Salesa; Sandoval, A.; Schneider, M.; Arroyo, M. Seglar; Sinnis, G.; Smith, A. J.; Springer, R. W.; Surajbali, P.; Taboada, Ignacio; Tibolla, O.; Tollefson, K.; Torres, I.; Ukwatta, Tilan N.; Villasenor, L.; Weisgarber, T.; Westerhoff, Stefan; Wisher, I. G.; Wood, J.; Yapici, Tolga; Yodh, G.; Zepeda, A.; Zhou, H.

doi:10.3847/1538-4357/aade4e

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

A. U. Abeysekara, A. Archer, Wystan Benbow, Ralph Bird, Robert Brose, M. Buchovecky, J. H. Buckley, V. Bugaev, A. J. Chromey, M. P. Connolly, Wei Cui, M. K. Daniel, A. Falcone, Qi Feng, John P. Finley, L. Fortson, Amy Furniss, M. Huetten, David Hanna, O. Hervet, J. Holder, G. Hughes, T. B. Humensky, Caitlin A. Johnson, Philip Kaaret, P. Kar, M. Kertzman, David Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, T. T. Y. Lin, S. McArthur, P. Moriarty, Reshmi Mukherjee, R. A. Ong, Adam Nepomuk Otte, Nahee Park, A. Petrashyk, Martin Pohl, Elisa Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, Gregory T. Richards, E. Roache, C. Rulten, I. Sadeh, Marcos Santander, G. H. Sembroski, Karlen Shahinyan, I. Sushch, J. Tyler, S. P. Wakely, A. Weinstein, R. M. Wells, P. Wilcox, Alina Wilhelm, D. A. Williams, T. J. Williamson, B. Zitzer, S. Abdollahi, Marco Ajello, Luca Baldini, G. Barbiellini, Denis Bastieri, Ronaldo Bellazzini, B. Berenji, Elisabetta Bissaldi, R. D. Blandford, R. Bonino, E. Bottacini, Terri J. Brandt, P. Bruel, R. Buehler, R. A. Cameron, R. Caputo, P. A. Caraveo, D. Castro, E. Cavazzuti, Eric Charles, G. Chiaro, S. Ciprini, Johann Cohen-Tanugi, D. Costantin, S. Cutini, F. de Palma, N. Di Lalla, M. Di Mauro, L. Di Venere, A. Dominguez, C. Favuzzi, S. J. Fegan, Anna Franckowiak, Yasushi Fukazawa, Stefan Funk, Piergiorgio Fusco, Fabio Gargano, Dario Gasparrini, Nicola Giglietto, F. Giordano, Marcello Giroletti, D. Green, I. A. Grenier, L. Guillemot, Sylvain Guiriec, Elizabeth Hays, John W. Hewitt, D. Horan, G. Johannesson, S. Kensei, M. Kuss, Stefan Larsson, L. Latronico, Marianne Lemoine-Goumard, J. Li, Francesco Longo, Francesco Loparco, M. N. Lovellette, Pasquale Lubrano, Jeffrey D. Magill, Simone Maldera, Mario Nicola Mazziotta, J. E. McEnery, P. F. Michelson, W. Mitthumsiri, Tsunefumi Mizuno, Maria Elena Monzani, Aldo Morselli, Igor V. Moskalenko, M. Negro, E. Nuss, R. Ojha, Nicola Omodei, M. Orienti, E. Orlando, M. Palatiello, Vaidehi S. Paliya, D. Paneque, Jeremy S. Perkins, M. Persic, Melissa Pesce-Rollins, Vahe' Petrosian, F. Piron, Troy A. Porter, G. Principe, S. Raino, Riccardo Rando, B. Rani, Massimilano Razzano, Soebur Razzaque, A. Reimer, Olaf Reimer, T. Reposeur, C. Sgro, E. J. Siskind, Gloria Spandre, P. Spinelli, D. J. Suson, Hiroyasu Tajima, J. B. Thayer, David J. Thompson, Diego F. Torres, Gino Tosti, Eleonora Troja, J. Valverde, Giacomo Vianello, M. Vogel, K. Wood, M. Yassine, R. Alfaro, C. Alvarez, J. D. Alvarez, R. Arceo, J. C. Arteaga-Velazquez, D. Avila Rojas, H. A. Ayala Solares, A. Becerril, E. Belmont-Moreno, S. Y. BenZvi, A. Bernal, J. Braun, C. Brisbois, K. S. Caballero-Mora, T. Capistran, A. Carraminana, Sabrina Casanova, M. Castillo, U. Cotti, J. Cotzomi, S. Coutino de Leon, C. De Leon, E. De la Fuente, S. Dichiara, B. L. Dingus, M. A. DuVernois, J. C. Diaz-Velez, K. Engel, O. Enriquez-Rivera, D. W. Fiorino, H. Fleischhack, N. Fraija, J. A. Garcia-Gonzalez, F. Garfias, A. Gonzalez Munoz, M. M. Gonzalez, J. A. Goodman, Z. Hampel-Arias, J. P. Harding, S. Hernandez, A. Hernandez-Almada, B. Hona, F. Hueyotl-Zahuantitla, C. M. Hui, P. Huntemeyer, A. Iriarte, A. Jardin-Blicq, V. Joshi, S. Kaufmann, A. Lara, R. J. Lauer, W. H. Lee, D. Lennarz, H. Leon Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, R. Luna-Garcia, R. Lopez-Coto, K. Malone, S. S. Marinelli, O. Martinez, I. Martinez-Castellanos, J. Martinez-Castro, H. Martinez-Huerta, J. A. Matthews, P. Miranda-Romagnoli, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, R. Pelayo, J. Pretz, E. G. Perez-Perez, Z. Ren, C. D. Rho, C. Riviere, D. Rosa-Gonzalez, M. Rosenberg, E. Ruiz-Velasco, H. Salazar, F. Salesa Greus, A. Sandoval, M. Schneider, M. Seglar Arroyo, G. Sinnis, A. J. Smith, R. W. Springer, P. Surajbali, Ignacio Taboada, O. Tibolla, K. Tollefson, I. Torres, Tilan N. Ukwatta, L. Villasenor, T. Weisgarber, Stefan Westerhoff, I. G. Wisher, J. Wood, Tolga Yapici, G. Yodh, A. Zepeda, H. Zhou

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 CherenkovThe 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.…

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Verfasserangaben:	A. U. Abeysekara, A. Archer, Wystan Benbow ORCiD, Ralph Bird ORCiD, Robert Brose ORCiD GND, M. Buchovecky, J. H. Buckley, V. Bugaev, A. J. Chromey, M. P. Connolly, Wei Cui ORCiD, M. K. Daniel, A. Falcone, Qi Feng ORCiD, John P. Finley ORCiD, L. Fortson, Amy Furniss ORCiD, M. Huetten, David Hanna ORCiD, O. Hervet, J. Holder, G. Hughes, T. B. Humensky, Caitlin A. Johnson ORCiD, Philip Kaaret ORCiD, P. Kar, M. Kertzman, David Kieda ORCiD, M. Krause, F. Krennrich, S. Kumar, M. J. Lang ORCiD, T. T. Y. Lin, S. McArthur, P. Moriarty, Reshmi Mukherjee ORCiD, R. A. Ong, Adam Nepomuk Otte ORCiD, Nahee Park ORCiD, A. Petrashyk, Martin Pohl ORCiD GND, Elisa Pueschel ORCiD, J. Quinn, K. Ragan, P. T. Reynolds, Gregory T. Richards ORCiD, E. Roache, C. Rulten, I. Sadeh, Marcos Santander ORCiD, G. H. Sembroski, Karlen Shahinyan ORCiD, I. Sushch, J. Tyler, S. P. Wakely, A. Weinstein, R. M. Wells, P. Wilcox, Alina Wilhelm ORCiD GND, D. A. Williams, T. J. Williamson, B. Zitzer, S. Abdollahi, Marco Ajello ORCiD, Luca Baldini ORCiD, G. Barbiellini, Denis Bastieri ORCiD, Ronaldo Bellazzini ORCiD, B. Berenji, Elisabetta Bissaldi ORCiD, R. D. Blandford, R. Bonino, E. Bottacini, Terri J. Brandt ORCiD, P. Bruel, R. Buehler, R. A. Cameron, R. Caputo, P. A. Caraveo, D. Castro, E. Cavazzuti, Eric Charles ORCiD, G. Chiaro, S. Ciprini, Johann Cohen-Tanugi ORCiD, D. Costantin, S. Cutini, F. de Palma, N. Di Lalla, M. Di Mauro, L. Di Venere, A. Dominguez, C. Favuzzi, S. J. Fegan, Anna Franckowiak ORCiD, Yasushi Fukazawa ORCiD, Stefan Funk ORCiD, Piergiorgio Fusco ORCiD, Fabio Gargano ORCiD, Dario Gasparrini ORCiD, Nicola Giglietto ORCiD, F. Giordano, Marcello Giroletti ORCiD, D. Green, I. A. Grenier, L. Guillemot, Sylvain Guiriec ORCiD, Elizabeth Hays ORCiD, John W. Hewitt ORCiD, D. Horan, G. Johannesson, S. Kensei, M. Kuss, Stefan Larsson ORCiD, L. Latronico, Marianne Lemoine-Goumard ORCiD, J. Li, Francesco Longo ORCiD, Francesco Loparco ORCiD, M. N. Lovellette, Pasquale Lubrano ORCiD, Jeffrey D. Magill ORCiD, Simone Maldera ORCiD, Mario Nicola Mazziotta ORCiD, J. E. McEnery, P. F. Michelson, W. Mitthumsiri, Tsunefumi Mizuno ORCiD, Maria Elena Monzani ORCiD, Aldo Morselli ORCiD, Igor V. Moskalenko ORCiD, M. Negro, E. Nuss, R. Ojha, Nicola Omodei ORCiD, M. Orienti, E. Orlando, M. Palatiello, Vaidehi S. Paliya ORCiD, D. Paneque, Jeremy S. Perkins ORCiD, M. Persic, Melissa Pesce-Rollins ORCiD, Vahe' Petrosian ORCiD, F. Piron, Troy A. Porter ORCiD, G. Principe, S. Raino, Riccardo Rando ORCiD, B. Rani, Massimilano Razzano, Soebur Razzaque ORCiD, A. Reimer, Olaf Reimer ORCiD, T. Reposeur, C. Sgro, E. J. Siskind, Gloria Spandre ORCiD, P. Spinelli, D. J. Suson, Hiroyasu Tajima ORCiD, J. B. Thayer, David J. Thompson ORCiD, Diego F. Torres ORCiD, Gino Tosti ORCiD, Eleonora Troja ORCiD, J. Valverde, Giacomo Vianello ORCiD, M. Vogel, K. Wood, M. Yassine, R. Alfaro, C. Alvarez, J. D. Alvarez, R. Arceo, J. C. Arteaga-Velazquez, D. Avila Rojas, H. A. Ayala Solares, A. Becerril, E. Belmont-Moreno, S. Y. BenZvi, A. Bernal, J. Braun, C. Brisbois, K. S. Caballero-Mora, T. Capistran, A. Carraminana, Sabrina Casanova GND, M. Castillo, U. Cotti, J. Cotzomi, S. Coutino de Leon, C. De Leon, E. De la Fuente, S. Dichiara, B. L. Dingus, M. A. DuVernois, J. C. Diaz-Velez, K. Engel, O. Enriquez-Rivera, D. W. Fiorino, H. Fleischhack, N. Fraija, J. A. Garcia-Gonzalez, F. Garfias, A. Gonzalez Munoz, M. M. Gonzalez, J. A. Goodman, Z. Hampel-Arias, J. P. Harding, S. Hernandez, A. Hernandez-Almada, B. Hona, F. Hueyotl-Zahuantitla, C. M. Hui, P. Huntemeyer, A. Iriarte, A. Jardin-Blicq, V. Joshi, S. Kaufmann, A. Lara, R. J. Lauer, W. H. Lee, D. Lennarz, H. Leon Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, R. Luna-Garcia, R. Lopez-Coto, K. Malone, S. S. Marinelli, O. Martinez, I. Martinez-Castellanos, J. Martinez-Castro, H. Martinez-Huerta, J. A. Matthews, P. Miranda-Romagnoli, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, R. Pelayo, J. Pretz, E. G. Perez-Perez, Z. Ren, C. D. Rho, C. Riviere, D. Rosa-Gonzalez, M. Rosenberg, E. Ruiz-Velasco, H. Salazar, F. Salesa Greus, A. Sandoval, M. Schneider, M. Seglar Arroyo, G. Sinnis, A. J. Smith, R. W. Springer, P. Surajbali, Ignacio Taboada ORCiD, O. Tibolla, K. Tollefson, I. Torres, Tilan N. Ukwatta ORCiD, L. Villasenor, T. Weisgarber, Stefan Westerhoff ORCiD, I. G. Wisher, J. Wood, Tolga Yapici ORCiD, G. Yodh, A. Zepeda, H. Zhou
DOI:	https://doi.org/10.3847/1538-4357/aade4e
ISSN:	0004-637X
ISSN:	1538-4357
Titel des übergeordneten Werks (Englisch):	The astrophysical journal : an international review of spectroscopy and astronomical physics
Verlag:	IOP Publ. Ltd.
Verlagsort:	Bristol
Publikationstyp:	Wissenschaftlicher Artikel
Sprache:	Englisch
Datum der Erstveröffentlichung:	05.10.2018
Erscheinungsjahr:	2018
Urhebende Körperschaft:	VERITAS Collaboration Fermi-LAT Collaboration HAWC Collaboration
Datum der Freischaltung:	01.09.2021
Freies Schlagwort / Tag:	gamma rays: general
Band:	866
Ausgabe:	1
Seitenanzahl:	18
Organisationseinheiten:	Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
DDC-Klassifikation:	5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften
	5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Peer Review:	Referiert
Publikationsweg:	Open Access / Green Open-Access

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

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