Calendar

Speaker: Giuseppe Morello

Titolo: Towards high-precision modeling of star+exoplanet multiwavelength light-curves

Abstract: I will present new tools and methodologies purposely developed for modeling observations of transiting exoplanets and eclipsing binaries with precision down to <10 parts per million (ppm).

ExoTETHyS is a python package that aims to collect the functions needed to model the high-precision spectrophotometric observations obtained with JWST and ARIEL (not only). The current version includes a user-friendly stellar limb-darkening calculator that outperforms existing codes by one order of magnitude in terms of light-curve model accuracy. I will introduce to the current use of ExoTETHyS and discuss the planned developments.

I will also show the results from the consistent reanalyses of Spitzer and Hubble data with bayesian approaches and improved data detrending techniques.

Speaker: Fabio Reale (UNIPA)

Authors: F. Reale(1,2), P. Testa(3), A. Petralia(2), D. Graham(4), D. Kolotkov(5)
(1) Dipartimento di Fisica & Chimica, Università di Palermo;
(2) INAF-Osservatorio Astronomico di Palermo;
(3) Center for Astrophysics | Harvard & Smithsonian, Cambridge, USA;
(4) Bay Area Environmental Research Institute, NASA Research Park, Moffett Field, USA;
(5) Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry, UK

Titolo: Impulsive heating in the solar corona: large scale magnetic rearrangements

Abstract:

Speaker: Massimo Brescia (INAF-Osservatorio Asstronomico di Capodimonte).

Titolo: Leverage data science in modern astrophysics
Abstract:
The exploration of the Universe is one of main topics within the research in Physics Sciences. All incoming and on going astrophysical surveys are characterized by a huge amount of heterogeneous multi-wavelength data, which will require efficient automatic methods to be exploited in an optimal and competitive way by the italian scientific community.
Astrophysics data are then characterized by large volume, velocity and
variety, the three conditions at thebase of the Big Data paradigm. Therefore, an approach based on data mining, statistics,
machine and deep learning, in one word Astroinformatics, is required. We
will discuss a variety of such methodologies, already available and validated in several astrophysical contexts, with  the aim at proposing a pragmatic
way to approach the scientific topics of the incoming multi-messenger
Astrophysics.

Speaker: Elisa Guerriero (UNIPA)

Titolo: Development polishing process for bare aluminum mirrors to ARIEL space mission

Abstract: ARIEL is the 4th medium-class mission of ESA’s Cosmic Vision Programme to see and to study the exoplanets’ atmospheres in VIS/IR. The technical innovation of the project is the use of bare aluminum for the mirrors. This material is light, cheap, and available in large quantities, but difficult to polish because it is not very dense. In this seminar, I will talk about my work at Media Lario S.r.l. for the development of the aluminum polishing process, the critical issues and the results obtained.