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X-WR-CALDESC:Eventi per Osservatorio Astronomico di Roma
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TZID:Europe/Rome
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DTSTART:20190331T010000
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TZNAME:CET
DTSTART:20191027T010000
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TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20200329T010000
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DTSTART:20201025T010000
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DTSTART:20210328T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20200114T114500
DTEND;TZID=Europe/Rome:20200114T124500
DTSTAMP:20260410T234526
CREATED:20191008T060530Z
LAST-MODIFIED:20200107T140305Z
UID:6889-1579002300-1579005900@www.oa-roma.inaf.it
SUMMARY:The two-families scenario: what does it predict?
DESCRIPTION:I will revisit the two-families scenario in which neutron stars coexist with strange quark stars\, i.e. with compact objects made almost\nentirely of deconfined quarks. I will outline the differences between this scenario and other schemes in which quark matter appears only at the center of compact stars and I will discuss how it compares with GW170817\, GRB170817A\, AT2017gfo and with the existing limits on masses and radii of compact stars.
URL:https://www.oa-roma.inaf.it/event/colloquium-alessandro-drago/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20200121T114500
DTEND;TZID=Europe/Rome:20200121T124500
DTSTAMP:20260410T234526
CREATED:20191009T121842Z
LAST-MODIFIED:20191009T121842Z
UID:6909-1579607100-1579610700@www.oa-roma.inaf.it
SUMMARY:colloquium - Matteo Bachetti
DESCRIPTION:
URL:https://www.oa-roma.inaf.it/event/colloquium-matteo-bachetti/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20200128T114500
DTEND;TZID=Europe/Rome:20200128T124500
DTSTAMP:20260410T234526
CREATED:20191211T055526Z
LAST-MODIFIED:20191220T064506Z
UID:7190-1580211900-1580215500@www.oa-roma.inaf.it
SUMMARY:3D magnetic structure\, and brightening in sunspot penumbra
DESCRIPTION:We analyzed spectropolarimetric data in the Fe I 617.3 nm and Ca II 854.2 nm lines of the sunspot in AR 12546 observed with the IBIS at the Dunn Solar Telescope on 20th May 2016 and co-temporal filtergrams by space-borne (Hinode\, IRIS and SDO) instruments. The observed sunspot is one among the largest such features occurred over the last solar cycle. The IBIS data\, taken under excellent seeing conditions that lasted more than three hours\, were inverted with the NICOLE code\, in order to retrieve the temperature\, magnetic field\, and plasma velocity of the studied sunspot as a function of optical depth and time. The umbral and penumbral regions are for the most part stable in the photosphere\, while co-spatial chromospheric areas show waves in the umbra-penumbra boundary and intense brightening along penumbral filaments. We explored the origin of these chromospheric processes and their relation to changes in the 3D magnetic structure of the observed sunspot.
URL:https://www.oa-roma.inaf.it/event/colloquium-mariarita-murabito/
LOCATION:Aula Gratton
CATEGORIES:Seminari
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