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Search for Very-high-energy Emission from Gamma-Ray Bursts Using the First 18 Months of Data from the HAWC Gamma-Ray Observatory

  • Authors: R. Alfaro, C. Alvarez, J. D. Álvarez, R. Arceo, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, A. S. Barber, N. Bautista-Elivar, A. Becerril, E. Belmont-Moreno, S. Y. BenZvi, A. Bernal, J. Braun, C. Brisbois, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, M. Castillo, U. Cotti, J. Cotzomi, S. Coutiño deLeón, E. De la Fuente, C. De León, T. DeYoung, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, J. C. Díaz-Vélez, R. W. Ellsworth, K. Engel, D. W. Fiorino, N. Fraija, J. A. García-González, F. Garfias, M. Gerhardt, A. González Muñoz, M. M. González, J. A. Goodman, Z. Hampel-Arias, J. P. Harding, A. Hernandez-Almada, S. Hernandez, B. Hona, C. M. Hui, P. Hüntemeyer, A. Iriarte, A. Jardin-Blicq, V. Joshi, S. Kaufmann, D. Kieda, R. J. Lauer, W. H. Lee, D. Lennarz, H. León Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis Raya, R. Luna-García, R. López-Coto, K. Malone, S. S. Marinelli, O. Martinez, I. Martinez-Castellanos, J. Martínez-Castro, H. Martínez-Huerta, J. A. Matthews, P. Miranda-Romagnoli, E. Moreno, M. Mostafá, L. Nellen, M. Newbold, R. Noriega-Papaqui, R. Pelayo, E. G. Pérez-Pérez, J. Pretz, Z. Ren, C. D. Rho, C. Rivière, D. Rosa-González, M. Rosenberg, E. Ruiz-Velasco, H. Salazar, F. Salesa Greus, A. Sandoval, M. Schneider, H. Schoorlemmer, G. Sinnis, A. J. Smith, R. W. Springer, P. Surajbali, I. Taboada, O. Tibolla, K. Tollefson, I. Torres, T. N. Ukwatta, G. Vianello, T. Weisgarber, S. Westerhoff, J. Wood, T. Yapici, P. W. Younk, A. Zepeda, and H. Zhou

2017 The Astrophysical Journal 843 88.

  • Provider: AAS Journals

Caption: Figure 5.

Solid line (red) shows the spectrum fitted to the prompt Fermi-GBM data of GRB 170206, while dotted lines (black) show the “quasi-differential” limits assuming ﹩{E}^{-2}﹩ obtained from the HAWC data taken during the same time period. Dashed line (blue) shows the best-fit spectrum obtained from the Fermi-LAT data in the early afterglow and the shaded area the uncertainty taking into account the correlations and non-linearity of fit parameters. The green dashed−dotted lines show the HAWC limits for two different assumed redshifts.

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