Elenco dei seminari passati

Titolo: Modeling the interaction of a Supernova Remnant with the Circumstellar Medium – The case of the gamma-ray bright galactic supernova remnant RX J1713.7-3946

Abstract: SNRs are strongly characterized by their interaction with the circumstellar medium (CSM), often shaped by the mass loss history of the progenitor star, and with the ambient interstellar medium (ISM).
The aim of the thesis is to explore the physics of the interaction of a SNR with the CSM by examining a specific SNR through hydrodynamic (HD) numerical simulations. In particular, I focus on the remarkable Galactic SNR RX J1713.7-3946.
I will expose the results of hydrodynamics simulations regarding the formation of the CSM, the expansion of the SNR through the CSM and finally the interaction of the SNR with a molecular cloud. I will show the results of the synthesis of X-ray thermal emission from the outcome of those simulations.
Finally, I compare the X-ray thermal emission with actual X-ray observations of RX J1713. In particular, I show that the zero age main sequence mass of the progenitor of RX J1713 is of the order of 15 solar masses. Moreover, I derive that the explosion energy of the parent supernova is of the order of 1 FOE, while a highly energetic explosion (≥ 2 FOE) can be excluded. Finally, I obtain a tight constraint on the age of the remnant, which is of ∼ 2150 yr.

Speaker: Vincenzo Cusimano

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Speaker: Mattia Claudio D’Arpa (UNIPA/INAF)

Titolo: INVESTIGATING EXOPLANETARY ATMOSPHERES THROUGH TRANSMISSION SPECTROSCOPY

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Speaker Maria R. Carotenuto (INAF)

Titolo: Conservazione preventiva delle collezioni del Museo: primi risultati del progetto SpecoLab

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Speaker: Paolo Giacobbe (INAF)

Titolo: “Retrieving the Atmospheres of Distant Worlds: Insights from High-Resolution Spectroscopy”

Abstract: “High-resolution (HR) transmission spectroscopy has demonstrated exceptional effectiveness in detecting multiple molecular species in the atmospheres of exoplanets. At HR, molecular absorption bands are resolved into thousands of individual spectral lines, allowing for unambiguous identification of species through line matching (e.g., via cross-correlation) with planetary model templates, even when most individual lines are buried within photon noise. The next frontier is to connect the detection of molecular species to the underlying chemical and physical properties of exoplanetary atmospheres. We discuss the prospects of this technique in the context of upcoming facilities, such as the Extremely Large Telescope (ELT), highlighting its potential to revolutionize our understanding of exoplanet atmospheres.”

Con Seminario Astrokids in aula

Speakers: Monica Saluto e Chiara Maria Garito (Tirocinanti Unipa), Laura Leonardi

Titolo: Tirocini e tecnologie emergenti: lune nel metaverso e stelle in realtà aumentata

Abstract:
Dal 2020, l’Osservatorio Astronomico di Palermo (OAPA) promuove tirocini accademici rivolti a studenti e studentesse delle lauree triennali e magistrali in Fisica e Ingegneria, offrendo l’opportunità, attualmente unica in INAF, di approfondire la comunicazione e la didattica dell’astronomia attraverso l’uso di tecnologie innovative come la realtà aumentata (AR) e la realtà virtuale (VR). Durante l’incontro verranno presentati i progetti sviluppati dalle tirocinanti: un tour immersivo nel metaverso dedicato all’esplorazione delle lune del sistema solare e un’esperienza in realtà aumentata che racconta, in modo visivo e interattivo, il ciclo di vita delle stelle. Ci sarà l’opportunità di interagire con i progetti utilizzando visori VR e tablet, per un viaggio nell’universo che combina scienza, tecnologia, ricerca e curiosità.