Study of the Very High Energy emission of M87 through its broadband spectral energy distribution.
M87 is a giant radio galaxy, which is the central dominant galaxy of the Virgo Cluster. It is located at a distance of 6.5 Mpc (z = 0.004), and holds a supermassive black hole with a mass estimated in 5.6x10⁹ M๏. Very High Energy (VHE) emission from M87 has been detected by Imaging Air Cherenkov Tel...
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| Formato: | tesis de maestría |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2020 |
| País: | México |
| Recursos: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repositorio: | Repositorio Institucional del INAOE |
| Idioma: | español |
| OAI Identifier: | oai:inaoe.repositorioinstitucional.mx:1009/2364 |
| Acesso em linha: | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2364 |
| Access Level: | acceso abierto |
| Palavra-chave: | info:eu-repo/classification/Inspec/AGN info:eu-repo/classification/Inspec/Gamma rays info:eu-repo/classification/Inspec/HAWC info:eu-repo/classification/Inspec/Radio Galaxy info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/21 |
| Resumo: | M87 is a giant radio galaxy, which is the central dominant galaxy of the Virgo Cluster. It is located at a distance of 6.5 Mpc (z = 0.004), and holds a supermassive black hole with a mass estimated in 5.6x10⁹ M๏. Very High Energy (VHE) emission from M87 has been detected by Imaging Air Cherenkov Telescopes (IACTs) and recently by the High Altitude Water Charenkov (HAWC), which is a gamma-ray and cosmic ray observatory located in Puebla, Mexico. The mechanism that produces VHE emission in M87 remains unclear. This emission is thought to be originated in its prominent jet, which has been resolved from Radio to X-rays. In order to explain the VHE emission of M87, a broadband Spectral Energy Distribution (SED) of M87 has been constructed and fitted by a lepto-hadronic emission model. Emission from radio to GeV gamma rays has been modeled to be produced by Synchrotron Self Compton (SSC) emission. In this scenario, an electron population moving at relativistic velocities in the M87 jet is accelerated by a random oriented magnetic field. Therefore, electrons emit synchrotron radiation which is responsible for a low energy SED component from radio to X-rays. Synchrotron photons are Inverse Compton upscattered by the same electron population producing the high energy SED component. However, according to some authors, SSC models are not able to explain the Very High Energy (VHE) emission detected in M87. |
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