BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Instituto de Astrofísica de Andalucía - ECPv6.15.18//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://www.iaa.csic.es
X-WR-CALDESC:Eventos para Instituto de Astrofísica de Andalucía
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20260329T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20261025T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20270328T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20271031T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260119T130000
DTEND;TZID=Europe/Paris:20260119T140000
DTSTAMP:20260406T052436
CREATED:20260113T104959Z
LAST-MODIFIED:20260113T114250Z
UID:29103-1768827600-1768831200@www.iaa.csic.es
SUMMARY:High energy blazar physics in the Multi-Messenger context
DESCRIPTION:Active galactic nuclei (AGN) are among the most powerful sources in the Universe\, dominating the non-thermal energy output across nearly all electromagnetic bands. Understanding the mechanisms behind this emission\, such as accretion onto supermassive black holes\, particle acceleration\, magnetic field generation\, and shock formation in relativistic plasma\, is essential for interpreting high-energy and multi-messenger observations. These processes can be best probed through coordinated studies combining very-high-energy and high-angular-resolution observations. \nI will present recent results from polarization VLBI studies that trace jet formation\, acceleration\, and magnetic field structure in AGN on parsec scales. Our observations provide clear evidence for a net toroidal magnetic field in a current-carrying blazar jet. We also find that blazars viewed at extremely small angles to the line of sight can naturally resolve the long-standing «Doppler factor crisis\,» reconciling the low apparent jet speeds from VLBI with the high Doppler factors inferred from very-high-energy observations. \nOur results highlight the central role of relativistic beaming in shaping the gamma-ray and neutrino emission of blazars. This suggests that parent PeV-scale protons exhibit relativistic bulk motion and offers new constraints for models of their multi-messenger output. \nFecha y lugar: 19/01/2026 – 13:00 | Salón de ActosYuri KovalevMax Planck Institute for Radio Astronomy \n 
URL:https://www.iaa.csic.es/evento/high-energy-blazar-physics-in-the-multi-messenger-context/
LOCATION:IAA – CSIC\, Glorieta de la Astronomía\, Granada\, España
CATEGORIES:Seminarios
ATTACH;FMTTYPE=image/png:https://www.iaa.csic.es/wp-content/uploads/2023/11/seminarscover-e1752660087307.png
END:VEVENT
END:VCALENDAR