ORCID Profile
0000-0001-7714-0704
Current Organisation
Universidad de Monterrey
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Publisher: American Astronomical Society
Date: 05-10-2018
Publisher: American Association for the Advancement of Science (AAAS)
Date: 11-07-2018
Abstract: Previous detections of in idual astrophysical sources of neutrinos are limited to the Sun and the supernova 1987A, whereas the origins of the diffuse flux of high-energy cosmic neutrinos remain unidentified. On 22 September 2017, we detected a high-energy neutrino, IceCube-170922A, with an energy of ~290 tera-electron volts. Its arrival direction was consistent with the location of a known γ-ray blazar, TXS 0506+056, observed to be in a flaring state. An extensive multiwavelength c aign followed, ranging from radio frequencies to γ-rays. These observations characterize the variability and energetics of the blazar and include the detection of TXS 0506+056 in very-high-energy γ-rays. This observation of a neutrino in spatial coincidence with a γ-ray-emitting blazar during an active phase suggests that blazars may be a source of high-energy neutrinos.
Publisher: American Physical Society (APS)
Date: 15-01-2020
Publisher: American Association for the Advancement of Science (AAAS)
Date: 17-11-2017
Abstract: Several cosmic-ray detectors have found more positrons arriving at Earth than expected. Some researchers interpret this as a signature of exotic physics, such as the annihilation of dark matter particles. Others prefer a more mundane explanation that involves positron generation at pulsars followed by diffusion to Earth. Abeysekara et al. detected extended emission of gamma rays around two nearby pulsars, generated by high-energy electrons and positrons. The size of the extended emission was used to calculate how far positrons generated by the pulsars diffuse through space—which turns out to be insufficient to reach Earth. The excess positrons detected on Earth must therefore have a more exotic origin than nearby pulsars. Science , this issue p. 911
Publisher: IOP Publishing
Date: 08-04-2019
Publisher: IOP Publishing
Date: 27-01-2021
Publisher: American Astronomical Society
Date: 16-06-2017
Publisher: IOP Publishing
Date: 23-02-2021
No related grants have been discovered for Humberto Martínez-Huerta.