The Marcel Grossmann Meetings started in 1975 and reached the widest resonance in the field of General Relativity and Relativistic Astrophysics. More than 1000 scientists worldwide participated to the last meetings "in person" as you can find in the Proceedings on NASA/ADS, also with some Nobel laureates.
A parallel session on “The fall and rise of Betelgeuse” will be held at the Sixteenth Marcel Grossmann Meeting on General Relativity (MG16).
In October 2019 the luminosity of the red supergiant Betelgeuse started its descent to a particularly deep minimum in February 2020, rather predictable in time, but not in magnitude, which actually made rare the event. This condition, especially for semiregular variable stars, but also and even more for Mira-type stars, is not unique.
The case of Betelgeuse raised many original works from various groups of researchers, either observational either theoretical.
In this meeting session, occurring one primary oscillating period of Betelgeuse after that minimum, are strongly encouraged the presentations of works on Betelgeuse, on its variability, on its deep 2020 minimum, on supergiant stars similar to Betelgeuse, on time series analysis in stellar astrophysics, on observational aspects of stellar variability, on the pre-supernova stages.
The MG16 will take place virtually from Monday July 5 through Friday July 9, 2021. It will be organized by ICRA (Rome, Italy), ICRANet (Pescara, Italy) and the associated ICRANet centers including Yerevan, Armenia; Minsk, Belarus; Rio de Janeiro, Brazil; USTC, China; Isfahan, Iran; Stanford University and the University of Arizona, USA.
The MG16 website is http://www.icra.it/mg/mg16
The timeline is:
* May 15, 2021: registration closure
* June 15, 2021: abstract submission closure
The role of the AAVSO observers is crucial in understanding such type of variable stars like Betelgeuse, Antares, VY CMa...etc
and I would like that your activity as contributing observers be represented at this grand meeting.
Greetings
Costantino Sigismondi SGQ