Calendar

Dec
19
Thu
Seminario: Massimo Brescia (INAF)
Dec 19 @ 15:00 – 16:30

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.

Ricevimento studenti – Argiroffi
Dec 19 @ 16:30 – 18:00
Jan
8
Wed
Ricevimento studenti – Argiroffi
Jan 8 @ 10:30 – 12:30
ricevimento studenti Miceli
Jan 8 @ 15:00 – 16:15
Jan
21
Tue
Colloquio per tirocinio
Jan 21 @ 9:30 – 11:00

Referente: S. Benatti

Seminario: Elisa Guerriero (UNIPA), aula Osservatorio ore 15:00
Jan 21 @ 15:00 – 16:30

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.

Jan
22
Wed
Lezione VR
Jan 22 @ 10:30 – 13:30
Ricevimento studenti – Argiroffi
Jan 22 @ 15:00 – 17:00
Jan
24
Fri
Alternanza scuola-lavoro
Jan 24 @ 9:00 – 13:00
Feb
12
Wed
Seminario: Darius Modirrousta Galian (UNIPA), 12 Febbraio 2020 ore 15:00 Aula OAPA
Feb 12 @ 15:00 – 16:30

Speaker: Darius Modirrousta Galian (UNIPA)

Titolo: Exploring Super-Earth Surfaces: Albedo of Near-Airless Magma Ocean Planets and Topography

Abstract:

In this paper we propose an analytic function for the bond albedo of an airless or near-airless magma ocean planet (AMOP). We generated multiple 100 m wide 1D fractal surfaces unto which we individually bombarded 10,000 light rays. Using an approximate form of the Fresnel equations we measured how much of the incident light was reflected. Having repeated this algorithm on varying surface roughnesses we find the albedo as a function of the Hurst exponent, the geochemical composition of the magma, and the wavelength. As a proof of concept, we used our model on Kepler-10 b to demonstrate the applicability of our equations. We present the albedos of different lava compositions and multiple tests that can be applied to observational data in order to determine the characteristics of the lava. When applied to Kepler-10 b we show that the high albedo could be caused by a moderately wavy ocean composed of oxidised metallic species such as FeO, Fe2O3, Fe3O4, and some silicates. This would imply that Kepler-10 b is a coreless or near-coreless body. However, since the uncertainty in albedo measurements is large there is a strong degeneracy in the surface composition.