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X-WR-CALDESC:Eventos para Instituto de Astrofísica de Andalucía
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DTSTART;VALUE=DATE:20241126
DTEND;VALUE=DATE:20241129
DTSTAMP:20260423T075414
CREATED:20240906T091217Z
LAST-MODIFIED:20250124T165929Z
UID:21886-1732579200-1732838399@www.iaa.csic.es
SUMMARY:Hot Topics High Energy Astrophysics HONEST 3
DESCRIPTION:The high energy end of  pulsar spectra. \nPulsars as rapidly spinning neutron stars have always been excellent laboratories for the study of plasma physics\, particle acceleration and cosmic rays. Comprehending how and where particles are accelerated to produce the broadband shape that the pulsed spectra present is subject of enthusiastic discussions and constitute one of the hot topics in high energy astrophysics nowadays.  \nResults from the recent years extending pulsar spectra to TeV energies and beyond motivate debates that can only be elucidated through a deep understanding of the high energy end of their spectrum. In this Workshop\, we aim to discuss the latest results on pulsars from high energy instruments\, their implications for the current theories\, and prospects for future observatories. \n 
URL:https://www.iaa.csic.es/evento/hot-topics-in-high-energy-astrophysics-honest-3/
LOCATION:IAA – CSIC\, Glorieta de la Astronomía\, Granada\, España
CATEGORIES:Workshops
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241128T123000
DTEND;TZID=Europe/Paris:20241128T133000
DTSTAMP:20260423T075414
CREATED:20241119T084404Z
LAST-MODIFIED:20250912T080215Z
UID:22440-1732797000-1732800600@www.iaa.csic.es
SUMMARY:SO Colloquium: Cosmic chemical evolution: here\, there\, and everywhere
DESCRIPTION:Metals play a very important role in star formation and stellar evolution. Amongst other things they control the cooling of the interstellar gas\, thus allowing the formation of stars; they affect the radiation transport\, through the opacities involved in the different microscopic processes; and they have the most important role in the dust formation and in the mass loss from stars. Metals are formed inside stars. Therefore\, it is expected that metal enrichment in the universe should start soon after the formation of the first massive stars that\, after a very short life\, would return to the interstellar medium (ISM) in explosive events newly synthesised chemical elements\, heavier than the primordial hydrogen and helium. It is thought that this ejecta\, at some point mixed with the surrounding gas\, would help to its cooling and propitiate the appearance of a new generation of stars\, hence giving rise to the cycle of cosmic chemical evolution. All this wealth of detail is somehow imprinted in the distribution of abundances in galaxies. The absolute quantities of metals a galaxy (or a region of a galaxy) possesses\, the relative abundances of the different elements\, and their spatial distribution in a given galaxy are important constraints for the verification of our models and scenarios of the formation and evolution of galaxies. \nThere are two ways of handling and exploiting this information. One is to derive abundances in galaxies “in situ”\, i. e. in galaxies at their different redshifts. In that way\, we can observe the gas abundances at the time of the emission of radiation and thus obtain the value of the mean abundances of the gas at a given epoch. The other one is to derive the gas abundances at the present epoc \, that is\, observing galaxies at redshift zero and then use chemical evolution models to infer their abundances at previous epochs. \nEventually both approaches must converge in a single galaxy formation and evolution scenario. Once that convergence is achieved\, the models can be extrapolated back to even earlier times and predictions can be made which can be contrasted with planned observations. \nFecha: 28/11/2024 – 12:30Conferenciante: Profesora Ángeles DíazFiliación: Universidad Autónoma de Madrid\, Madrid\, España
URL:https://www.iaa.csic.es/evento/so-colloquium-cosmic-chemical-evolution-here-there-and-everywhere/
LOCATION:IAA – CSIC\, Glorieta de la Astronomía\, Granada\, España
CATEGORIES:SO Colloquium
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DTSTART;TZID=Europe/Paris:20241128T190000
DTEND;TZID=Europe/Paris:20241128T200000
DTSTAMP:20260423T075414
CREATED:20241219T110541Z
LAST-MODIFIED:20250125T010331Z
UID:22523-1732820400-1732824000@www.iaa.csic.es
SUMMARY:Sobre supernovas\, agujeros negros y cinturones de radiación en enanas marrones
DESCRIPTION:Muchas veces imágenes obtenidas con técnicas novedosas\, y al límite técnico\, son cruciales para hacer descubrimientos. \nAsí fue entre otros casos\, y como es bien sabido\, para el descubrimiento de la estructura de doble hélice del ADN. También aspectos esenciales de las radioemisiones de las supernovas\, los agujeros negros masivos y las enanas marrones se han descubierto a través de imágenes obtenidas con una misma técnica de muy alta resolución angular utilizada cada vez de modo muy distinto y en el límite técnico. \nEn la charla se abordará de modo conciso lo que es esencial a cada uno de esos descubrimientos que nos han permitido conocer los detalles de la expansión de las supernovas\, del entorno de los agujeros negros masivos y de los cinturones de radiación que rodean a las enanas marrones como lo hacen a Júpiter o la Tierra.   \nFecha: 28/11/2024 – 19:00Conferenciante: Jon MarcaideFiliación: Real Academia de Ciencias Exactas\, Físicas y Naturales de España \n 
URL:https://www.iaa.csic.es/evento/sobre-supernovas-agujeros-negros-y-cinturones-de-radiacion-en-enanas-marrones/
LOCATION:IAA – CSIC\, Glorieta de la Astronomía\, Granada\, España
CATEGORIES:Conferencias Lucas Lara
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