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Spectral study of very high energy gamma rays from SS 433 with HAWC

Fuente: arXiv

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Main Authors:	Alfaro, R., Alvarez, C., Arteaga-Velázquez, J. C., Rojas, D. Avila, Solares, H. A. Ayala, Babu, R., Belmont-Moreno, E., Caballero-Mora, K. S., Capistrán, T., Carramiñana, A., Casanova, S., Cotzomi, J., De la Fuente, E., Depaoli, D., Di Lalla, N., Hernandez, R. Diaz, Dingus, B. L ., DuVernois, M. A., Engel, K., Ergin, T., Espinoza, C ., Fan, K. L., Fang, K., Fraija, N., Fraija, S., García-González, J. A., Muñoz, A. González, González, M. M., Goodman, J. A., Groetsch, S., Harding, J. P., Hernández-Cadena, S., Herzog, I., Huang, D., Hueyotl-Zahuantitla, F., Hüntemeyer, P., Iriarte, A., Kaufmann, S., Lara, A ., Lee, W. H., Lee, J., de León, C., Vargas, H. León, Longinotti, A. L., Luis-Raya, G., Malone, K., Martínez-Castro, J., Matthews, J. A., Miranda-Romagnoli, P., Montes, J. A., Moreno, E., Mostafá, M., Nellen, L., Nisa, M. U ., Noriega-Papaqui, R ., Araujo, Y. Pérez, Pérez-Pérez, E. G., Rho, C. D., Rosa-González, D., Ruiz-Velasco, E ., Salazar, H., Sandoval, A., Schneider, M., Serna-Franco, J., Smith, A. J., Son, Y., Springer, R. W ., Tibolla, O., Tollefson, K., Torres, I., Torres-Escobedo, R., Turner, R., Ureña-Mena, F., Varela, E ., Villaseñor, L., Wang, X., Wang, Z., Watson, I. J., Yu, S ., Yun-Cárcamo, S., Zhou, H.
Format:	Preprint
Published:	2024
Subjects:	High Energy Astrophysical Phenomena
Online Access:	Acceder al recurso
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author	Alfaro, R. Alvarez, C. Arteaga-Velázquez, J. C. Rojas, D. Avila Solares, H. A. Ayala Babu, R. Belmont-Moreno, E. Caballero-Mora, K. S. Capistrán, T. Carramiñana, A. Casanova, S. Cotzomi, J. De la Fuente, E. Depaoli, D. Di Lalla, N. Hernandez, R. Diaz Dingus, B. L . DuVernois, M. A. Engel, K. Ergin, T. Espinoza, C . Fan, K. L. Fang, K. Fraija, N. Fraija, S. García-González, J. A. Muñoz, A. González González, M. M. Goodman, J. A. Groetsch, S. Harding, J. P. Hernández-Cadena, S. Herzog, I. Huang, D. Hueyotl-Zahuantitla, F. Hüntemeyer, P. Iriarte, A. Kaufmann, S. Lara, A . Lee, W. H. Lee, J. de León, C. Vargas, H. León Longinotti, A. L. Luis-Raya, G. Malone, K. Martínez-Castro, J. Matthews, J. A. Miranda-Romagnoli, P. Montes, J. A. Moreno, E. Mostafá, M. Nellen, L. Nisa, M. U . Noriega-Papaqui, R . Araujo, Y. Pérez Pérez-Pérez, E. G. Rho, C. D. Rosa-González, D. Ruiz-Velasco, E . Salazar, H. Sandoval, A. Schneider, M. Serna-Franco, J. Smith, A. J. Son, Y. Springer, R. W . Tibolla, O. Tollefson, K. Torres, I. Torres-Escobedo, R. Turner, R. Ureña-Mena, F. Varela, E . Villaseñor, L. Wang, X. Wang, Z. Watson, I. J. Yu, S . Yun-Cárcamo, S. Zhou, H.
author_facet	Alfaro, R. Alvarez, C. Arteaga-Velázquez, J. C. Rojas, D. Avila Solares, H. A. Ayala Babu, R. Belmont-Moreno, E. Caballero-Mora, K. S. Capistrán, T. Carramiñana, A. Casanova, S. Cotzomi, J. De la Fuente, E. Depaoli, D. Di Lalla, N. Hernandez, R. Diaz Dingus, B. L . DuVernois, M. A. Engel, K. Ergin, T. Espinoza, C . Fan, K. L. Fang, K. Fraija, N. Fraija, S. García-González, J. A. Muñoz, A. González González, M. M. Goodman, J. A. Groetsch, S. Harding, J. P. Hernández-Cadena, S. Herzog, I. Huang, D. Hueyotl-Zahuantitla, F. Hüntemeyer, P. Iriarte, A. Kaufmann, S. Lara, A . Lee, W. H. Lee, J. de León, C. Vargas, H. León Longinotti, A. L. Luis-Raya, G. Malone, K. Martínez-Castro, J. Matthews, J. A. Miranda-Romagnoli, P. Montes, J. A. Moreno, E. Mostafá, M. Nellen, L. Nisa, M. U . Noriega-Papaqui, R . Araujo, Y. Pérez Pérez-Pérez, E. G. Rho, C. D. Rosa-González, D. Ruiz-Velasco, E . Salazar, H. Sandoval, A. Schneider, M. Serna-Franco, J. Smith, A. J. Son, Y. Springer, R. W . Tibolla, O. Tollefson, K. Torres, I. Torres-Escobedo, R. Turner, R. Ureña-Mena, F. Varela, E . Villaseñor, L. Wang, X. Wang, Z. Watson, I. J. Yu, S . Yun-Cárcamo, S. Zhou, H.
contents	Very-high-energy (0.1-100 TeV) gamma-ray emission was observed in HAWC data from the lobes of the microquasar SS 433, making them the first set of astrophysical jets that were resolved at TeV energies. In this work, we update the analysis of SS 433 using 2,565 days of data from the High Altitude Water Cherenkov (HAWC) observatory. Our analysis reports the detection of a point-like source in the east lobe at a significance of $6.6\,σ$ and in the west lobe at a significance of $8.2\,σ$. For each jet lobe, we localize the gamma-ray emission and identify a best-fit position. The locations are close to the X-ray emission sites "e1" and "w1" for the east and west lobes, respectively. We analyze the spectral energy distributions and find that the energy spectra of the lobes are consistent with a simple power-law $\text{d}N/\text{d}E\propto E^α$ with $α= -2.44^{+0.13+0.04}_{-0.12-0.04}$ and $α= -2.35^{+0.12+0.03}_{-0.11-0.03}$ for the east and west lobes, respectively. The maximum energy of photons from the east and west lobes reaches 56 TeV and 123 TeV, respectively. We compare our observations to various models and conclude that the very-high-energy gamma-ray emission can be produced by a population of electrons that were efficiently accelerated.
format	Preprint
id	arxiv_https___arxiv_org_abs_2410_21796
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Spectral study of very high energy gamma rays from SS 433 with HAWC Alfaro, R. Alvarez, C. Arteaga-Velázquez, J. C. Rojas, D. Avila Solares, H. A. Ayala Babu, R. Belmont-Moreno, E. Caballero-Mora, K. S. Capistrán, T. Carramiñana, A. Casanova, S. Cotzomi, J. De la Fuente, E. Depaoli, D. Di Lalla, N. Hernandez, R. Diaz Dingus, B. L . DuVernois, M. A. Engel, K. Ergin, T. Espinoza, C . Fan, K. L. Fang, K. Fraija, N. Fraija, S. García-González, J. A. Muñoz, A. González González, M. M. Goodman, J. A. Groetsch, S. Harding, J. P. Hernández-Cadena, S. Herzog, I. Huang, D. Hueyotl-Zahuantitla, F. Hüntemeyer, P. Iriarte, A. Kaufmann, S. Lara, A . Lee, W. H. Lee, J. de León, C. Vargas, H. León Longinotti, A. L. Luis-Raya, G. Malone, K. Martínez-Castro, J. Matthews, J. A. Miranda-Romagnoli, P. Montes, J. A. Moreno, E. Mostafá, M. Nellen, L. Nisa, M. U . Noriega-Papaqui, R . Araujo, Y. Pérez Pérez-Pérez, E. G. Rho, C. D. Rosa-González, D. Ruiz-Velasco, E . Salazar, H. Sandoval, A. Schneider, M. Serna-Franco, J. Smith, A. J. Son, Y. Springer, R. W . Tibolla, O. Tollefson, K. Torres, I. Torres-Escobedo, R. Turner, R. Ureña-Mena, F. Varela, E . Villaseñor, L. Wang, X. Wang, Z. Watson, I. J. Yu, S . Yun-Cárcamo, S. Zhou, H. High Energy Astrophysical Phenomena Very-high-energy (0.1-100 TeV) gamma-ray emission was observed in HAWC data from the lobes of the microquasar SS 433, making them the first set of astrophysical jets that were resolved at TeV energies. In this work, we update the analysis of SS 433 using 2,565 days of data from the High Altitude Water Cherenkov (HAWC) observatory. Our analysis reports the detection of a point-like source in the east lobe at a significance of $6.6\,σ$ and in the west lobe at a significance of $8.2\,σ$. For each jet lobe, we localize the gamma-ray emission and identify a best-fit position. The locations are close to the X-ray emission sites "e1" and "w1" for the east and west lobes, respectively. We analyze the spectral energy distributions and find that the energy spectra of the lobes are consistent with a simple power-law $\text{d}N/\text{d}E\propto E^α$ with $α= -2.44^{+0.13+0.04}_{-0.12-0.04}$ and $α= -2.35^{+0.12+0.03}_{-0.11-0.03}$ for the east and west lobes, respectively. The maximum energy of photons from the east and west lobes reaches 56 TeV and 123 TeV, respectively. We compare our observations to various models and conclude that the very-high-energy gamma-ray emission can be produced by a population of electrons that were efficiently accelerated.
title	Spectral study of very high energy gamma rays from SS 433 with HAWC
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2410.21796