Seminar with professor PhD. Denise R. Gonçalves – November 6, 2020 (friday) – 10:15 a.m.

04/11/2020 09:49

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

RAMSES II – RAMan Search for Extragalactic Symbiotic Stars

PhD. Denise R. Gonçalves

Observatório do Valongo – UFRJ (Brazil)

Abstract:

Abstract: Symbiotics are binary systems of evolved stars that show the most energetic stellar explosions after supernovae. Constituting probable channels to Type Ia SNe, they are important to understand the relation between the SN rate in a galaxy and the number of symbiotic systems at present-time. Therefore, it is very relevant to make a census of symbiotic systems in nearby galaxies. Such a census was never carried out in dwarf galaxies. In the Galaxy many symbiotic systems possess the O VI Raman scattering line at 6830A. This line allowed the discovery of a few extragalactic symbiotic systems recently, in NGC 6822, NGC 185 and NGC 205, among others. Our ongoing RAMSES II project is aimed at searching for symbiotics in the nearby dwarf galaxies, via deep narrow-band imaging that allows to detect the O VI Raman scattered feature. This detection per se implies the existence of symbiotic systems. As a follow up of this first step, we will use optical plus IR spectroscopy to completely characterize the systems, in order to better link them with the scenario of SNe Ia progenitors. In this talk I will describe the RAMSES II project and discuss its first results.

Date: November 6, 2020 – (friday) –  Time: 10:15 a.m.

link to access the youtube channel: https://youtu.be/2g7k2Tmgf9o

Defence of M.Sc. dissertation of Katia Slodkowski Clerici – November 5, 2020 – 10:00 am

02/11/2020 10:10

The Physics Graduate Program invites everyone to:

Defence of M.Sc. dissertation

Katia Slodkowski Clerici

MEASURES OF CHEMICAL ABUNDANCES FROM STACKED SPECTRA OF GALAXIES

Defense Commitee

Profª. Drª. Natalia Vale Asari – (president) – UFSC/FSC
Prof. Dr. Tiago Vecchi Ricci – (external member) – UFFS/Cerro Largo
Prof. Dr. Daniel Ruschel Dutra – (local member) – UFSC/FSC

Date: November 5, 2020 – thursday – Time: 10:00 am 

virtual room access link: https://conferenciaweb.rnp.br/webconf/ppgfsc-ufsc

Seminar with professor Prof. Dr. Rafael Chaves – October 30, 2020 (friday) – 10:15 a.m.

26/10/2020 14:10

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

Detectando não-classicalidade com modelos causais

Prof. Dr. Rafael Chaves
IIP/UFRN

Abstract:

Apesar de seu sucesso inabalável, é comum escutarmos que a teoria quântica é estranha, contraintuitiva e até mesmo paradoxal. Roger Penrose, o mais recente ganhador do prêmio Nobel de Física, disse certa vez: “A mecânica quântica não faz o menor sentido”. De fato, conceitos como dualidade onda-partícula, emaranhamento e não-localidade quântica, parecem estar em claro desacordo com nossa intuição. Seria possível definir matematicamente essa contraintuição/não-classicalidade? Neste seminário discutiremos como a teoria da causalidade nos oferece um arcabouço especialmente adequado para responder em afirmativo a esta pergunta. Aplicaremos este formalismo em exemplos paradigmáticos, tal como o experimento de fenda dupla e o experimento de Bell, com resultados surpreendentes. Ao final, exploraremos mais a fundo a relação entre causa e efeito e correlações quânticas em um teste de importância fundamental no campo da inferência causal.

Date: October 30, 2020 – (friday) – Time: 10:15 a.m.

link to access the youtube channel: https://youtu.be/sSV64V7BsXA

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