Buchumschlag

The Fourth HAWC Catalog of Very-High-Energy Gamma-Ray Sources

Fuente: arXiv

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Bibliographische Detailangaben
Hauptverfasser:	Alfaro, R., Alvarez, C., Anita-Rangel, E., Araya, M., Arteaga-Velazquez, J. C., Rojas, D. Avila, Solares, H. A. Ayala, Bangale, P., Belmont-Moreno, E., Bernal, A., Caballero-Mora, K. S., Capistran, T., Carraminana, A., Carreon, F., Casanova, S., Cotti, U., Cotzomi, J., de Leon, S. Coutino, De la Fuente, E., Desiati, P., Di Lalla, N., Hernandez, R. Diaz, Dingus, B. L., DuVernois, M. A., Dıaz-Velez, J. C., Engel, K., Ergin, T., Espinoza, C., Fang, K., Fraija, N., Fraija, S., Garcıa-Gonzalez, J. A., Garfias, F., Ghosh, N., Gonzalez, M. M., Gonzalez, J. A., Goodman, J. A., Groetsch, S., Guevel, D., Hernandez-Cadena, S., Hueyotl-Zahuantitla, F., Huntemeyer, P., Iriarte, A., Kaufmann, S., Kieda, D., Lara, A., Leavitt, K., Lewis, T., Vargas, H. Leon, Linnemann, J. T., Longinotti, A. L., Luis-Raya, G., Martinez, O., Martınez-Castro, J., Martınez-Huerta, H., Matthews, J. A., Miranda-Romagnoli, P., Moreno, E., Mostafa, M., Najafi, M., Nayerhoda, A., Nellen, L., Noriega-Papaqui, R., Omodei, N., Osorio-Archila, M., Ponce, E., Araujo, Y. Perez, Perez-Perez, E. G., Remy, Q., Parra, A. Rodriguez, Rosa-Gonzalez, D., Roth, M., Salazar, H., Sandoval, A., Serna-Franco, J., Son, Y., Springer, R. W., Tibolla, O., Tollefson, K., Torres, I., Torres-Escobedo, R., Turner, R., Varela, E., Villasenor, L., Watson, I. J., Wu, H., Yu, S., Zhang, X., Zhou, H., de Leon, C.
Format:	Preprint
Veröffentlicht:	2026
Schlagworte:	High Energy Astrophysical Phenomena
Online-Zugang:	Acceder al recurso
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_version_	1866915764436467712
author	Alfaro, R. Alvarez, C. Anita-Rangel, E. Araya, M. Arteaga-Velazquez, J. C. Rojas, D. Avila Solares, H. A. Ayala Bangale, P. Belmont-Moreno, E. Bernal, A. Caballero-Mora, K. S. Capistran, T. Carraminana, A. Carreon, F. Casanova, S. Cotti, U. Cotzomi, J. de Leon, S. Coutino De la Fuente, E. Desiati, P. Di Lalla, N. Hernandez, R. Diaz Dingus, B. L. DuVernois, M. A. Dıaz-Velez, J. C. Engel, K. Ergin, T. Espinoza, C. Fang, K. Fraija, N. Fraija, S. Garcıa-Gonzalez, J. A. Garfias, F. Ghosh, N. Gonzalez, M. M. Gonzalez, J. A. Goodman, J. A. Groetsch, S. Guevel, D. Hernandez-Cadena, S. Hueyotl-Zahuantitla, F. Huntemeyer, P. Iriarte, A. Kaufmann, S. Kieda, D. Lara, A. Leavitt, K. Lewis, T. Vargas, H. Leon Linnemann, J. T. Longinotti, A. L. Luis-Raya, G. Martinez, O. Martınez-Castro, J. Martınez-Huerta, H. Matthews, J. A. Miranda-Romagnoli, P. Moreno, E. Mostafa, M. Najafi, M. Nayerhoda, A. Nellen, L. Noriega-Papaqui, R. Omodei, N. Osorio-Archila, M. Ponce, E. Araujo, Y. Perez Perez-Perez, E. G. Remy, Q. Parra, A. Rodriguez Rosa-Gonzalez, D. Roth, M. Salazar, H. Sandoval, A. Serna-Franco, J. Son, Y. Springer, R. W. Tibolla, O. Tollefson, K. Torres, I. Torres-Escobedo, R. Turner, R. Varela, E. Villasenor, L. Watson, I. J. Wu, H. Yu, S. Zhang, X. Zhou, H. de Leon, C.
author_facet	Alfaro, R. Alvarez, C. Anita-Rangel, E. Araya, M. Arteaga-Velazquez, J. C. Rojas, D. Avila Solares, H. A. Ayala Bangale, P. Belmont-Moreno, E. Bernal, A. Caballero-Mora, K. S. Capistran, T. Carraminana, A. Carreon, F. Casanova, S. Cotti, U. Cotzomi, J. de Leon, S. Coutino De la Fuente, E. Desiati, P. Di Lalla, N. Hernandez, R. Diaz Dingus, B. L. DuVernois, M. A. Dıaz-Velez, J. C. Engel, K. Ergin, T. Espinoza, C. Fang, K. Fraija, N. Fraija, S. Garcıa-Gonzalez, J. A. Garfias, F. Ghosh, N. Gonzalez, M. M. Gonzalez, J. A. Goodman, J. A. Groetsch, S. Guevel, D. Hernandez-Cadena, S. Hueyotl-Zahuantitla, F. Huntemeyer, P. Iriarte, A. Kaufmann, S. Kieda, D. Lara, A. Leavitt, K. Lewis, T. Vargas, H. Leon Linnemann, J. T. Longinotti, A. L. Luis-Raya, G. Martinez, O. Martınez-Castro, J. Martınez-Huerta, H. Matthews, J. A. Miranda-Romagnoli, P. Moreno, E. Mostafa, M. Najafi, M. Nayerhoda, A. Nellen, L. Noriega-Papaqui, R. Omodei, N. Osorio-Archila, M. Ponce, E. Araujo, Y. Perez Perez-Perez, E. G. Remy, Q. Parra, A. Rodriguez Rosa-Gonzalez, D. Roth, M. Salazar, H. Sandoval, A. Serna-Franco, J. Son, Y. Springer, R. W. Tibolla, O. Tollefson, K. Torres, I. Torres-Escobedo, R. Turner, R. Varela, E. Villasenor, L. Watson, I. J. Wu, H. Yu, S. Zhang, X. Zhou, H. de Leon, C.
contents	We present an updated catalog of TeV gamma-ray sources based on the fifth pass of data from the High-Altitude Water Cherenkov (HAWC) Observatory. This release benefits from improved event reconstruction and nearly three additional years of observations. It also incorporates a systematic multi-source fitting framework, enabling more flexible and accurate modeling of the gamma-ray sky. This fitting procedure was modeled after the manual approach used in HAWC analyses of individual sources and regions, as well as other gamma-ray catalogs, like the 4FGL. In addition to more varied modeling of source morphology and spectral parameters compared to previous HAWC catalogs, this catalog uses a robust modeling of Galactic diffuse TeV emission. The fitting procedure uses both point-like and symmetric Gaussian spatial templates to model the source morphology. The spectral shape of the emission is modeled with either a simple power-law or log-parabola to explore curvature in the spectral energy distribution. We report 85 sources at the 4σ level, including 11 sources not associated with any TeVCat source using a distance-based association criterion. Distance-based association with the 1LHAASO catalog results in 22 4HWC sources without a counterpart. Additionally, there are 12 sources not associated with any physical counterpart in the Low- or High-Mass X-Ray Binary, the ATNF, or Fermi Pulsar, or SNR catalogs of sources. Five of the aforementioned sources have no counterpart in any of the catalogs searched and represent an opportunity for follow-up observations.
format	Preprint
id	arxiv_https___arxiv_org_abs_2602_00263
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	The Fourth HAWC Catalog of Very-High-Energy Gamma-Ray Sources Alfaro, R. Alvarez, C. Anita-Rangel, E. Araya, M. Arteaga-Velazquez, J. C. Rojas, D. Avila Solares, H. A. Ayala Bangale, P. Belmont-Moreno, E. Bernal, A. Caballero-Mora, K. S. Capistran, T. Carraminana, A. Carreon, F. Casanova, S. Cotti, U. Cotzomi, J. de Leon, S. Coutino De la Fuente, E. Desiati, P. Di Lalla, N. Hernandez, R. Diaz Dingus, B. L. DuVernois, M. A. Dıaz-Velez, J. C. Engel, K. Ergin, T. Espinoza, C. Fang, K. Fraija, N. Fraija, S. Garcıa-Gonzalez, J. A. Garfias, F. Ghosh, N. Gonzalez, M. M. Gonzalez, J. A. Goodman, J. A. Groetsch, S. Guevel, D. Hernandez-Cadena, S. Hueyotl-Zahuantitla, F. Huntemeyer, P. Iriarte, A. Kaufmann, S. Kieda, D. Lara, A. Leavitt, K. Lewis, T. Vargas, H. Leon Linnemann, J. T. Longinotti, A. L. Luis-Raya, G. Martinez, O. Martınez-Castro, J. Martınez-Huerta, H. Matthews, J. A. Miranda-Romagnoli, P. Moreno, E. Mostafa, M. Najafi, M. Nayerhoda, A. Nellen, L. Noriega-Papaqui, R. Omodei, N. Osorio-Archila, M. Ponce, E. Araujo, Y. Perez Perez-Perez, E. G. Remy, Q. Parra, A. Rodriguez Rosa-Gonzalez, D. Roth, M. Salazar, H. Sandoval, A. Serna-Franco, J. Son, Y. Springer, R. W. Tibolla, O. Tollefson, K. Torres, I. Torres-Escobedo, R. Turner, R. Varela, E. Villasenor, L. Watson, I. J. Wu, H. Yu, S. Zhang, X. Zhou, H. de Leon, C. High Energy Astrophysical Phenomena We present an updated catalog of TeV gamma-ray sources based on the fifth pass of data from the High-Altitude Water Cherenkov (HAWC) Observatory. This release benefits from improved event reconstruction and nearly three additional years of observations. It also incorporates a systematic multi-source fitting framework, enabling more flexible and accurate modeling of the gamma-ray sky. This fitting procedure was modeled after the manual approach used in HAWC analyses of individual sources and regions, as well as other gamma-ray catalogs, like the 4FGL. In addition to more varied modeling of source morphology and spectral parameters compared to previous HAWC catalogs, this catalog uses a robust modeling of Galactic diffuse TeV emission. The fitting procedure uses both point-like and symmetric Gaussian spatial templates to model the source morphology. The spectral shape of the emission is modeled with either a simple power-law or log-parabola to explore curvature in the spectral energy distribution. We report 85 sources at the 4σ level, including 11 sources not associated with any TeVCat source using a distance-based association criterion. Distance-based association with the 1LHAASO catalog results in 22 4HWC sources without a counterpart. Additionally, there are 12 sources not associated with any physical counterpart in the Low- or High-Mass X-Ray Binary, the ATNF, or Fermi Pulsar, or SNR catalogs of sources. Five of the aforementioned sources have no counterpart in any of the catalogs searched and represent an opportunity for follow-up observations.
title	The Fourth HAWC Catalog of Very-High-Energy Gamma-Ray Sources
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2602.00263