Program Astroworkshopu 2016

sobota 2016‐04‐02
09:00 – 09:50 Raňajky
10:00 – 11:00 Michal Hamara Od Pluta po exoplanéty
11:00 – 11:15 Prestávka
11:15 – 11:30 Erik Ďurjak Absolute hot
Absolute hot je anglický termín pre teoreticky najvyššiu možnú teplotu, ktorá nemôže byť prekročená bez porušenia súčasnej fyziky. V prezentácii sa vysvetlí, prečo je táto teplota nepresiahnuteľná a spomenú sa aj iné zaujímavosti týkajúce sa najhorúcejších objektov vo vesmíre.
11:30 – 11:45 Erik Ďurjak Grahamovo číslo
Grahamovo číslo je najväčšie číslo, ktoré bolo kedy použité v matematickom dôkaze. V prezentácii sa vysvetlí matematický problém pri ktorom sa využilo toto číslo a ukáže sa postup, pomocou ktorého sme schopní ho matematicky zapísať a aspoň približne si predstaviť jeho majestátnosť.
11:45 – 12:15 Juraj Lörinčík Planetary rings around Earth-like planet
Nowadays, two models of formation of planetary ring systems are known. The first one, the tidal splitting scenario describes what happens with a satelite when it transits planet’s Roche zone. In the second one, satellite is crushed because of collisions with smaller bodies, appearing in the Solar System during e.g. Late Heavy Bombardment. Do we really observe what these two models predict? How do planetary rings form? What is more, why do they exist for such long timescales? Is their presence in planetary system understood at all? In my presentation I will introduce theory on ring system formation and discuss possibilities of their presence around terrestrial planets.
12:15 – 13:30 Obed
13:30 – 15:30 Výlet na Veľkú Homolu / prehliadka observatória
15:30 – 16:30 Radoslav Paučo Tri zákony galaktickej rotácie (podľa S. McGaugh: Three Laws of Galactic Rotation)
Rotačné krivky sú asymptoticky ploché, baryónová hmotnosť galaxie je priamo úmerná štvrtej mocnine rotačnej rýchlosti, gravitačná sila koreluje s plošnou hustotou baryónov. „Just the facts, ma’am. Just the facts.“
16:30 – 17:00 Prestávka
17:00 – 18:15 Jaroslav Šimon Čile, astronomický raj
18:30 – 20:00 Večera
20:00 – 21:00 Pavel Kroupa
Radoslav Paučo 		The vast polar structures around the Milky Way, Andromeda, and other galaxies, and the implications thereof for fundamental physics
The current standard model of cosmology (SMoC) requires The Dual Dwarf Galaxy Theorem to be true according to which two types of dwarf galaxies must exist: primordial dark-matter (DM) dominated (type A) dwarf galaxies, and tidal-dwarf and ram-pressure-dwarf (type B) galaxies void of DM. Type A dwarfs surround the host approximately spherically, while type B dwarfs are typically correlated in phase-space. Type B dwarfs must exist in any cosmological theory in which galaxies interact. Only one type of dwarf galaxy is observed to exist on the baryonic Tully- Fisher plot and in the radius-mass plane.

The Milky Way satellite system forms a vast phase-space-correlated structure that includes globular clusters and stellar and gaseous streams. Other galaxies also have phase-space correlated satellite systems. Therefore, The Dual Dwarf Galaxy Theorem is falsified by observation and dynamically relevant cold or warm DM cannot exist. It is shown that the SMoC is incompatible with a large set of other extragalactic observations. Other theoretical solutions to cosmological observations exist. In particular, alone the empirical mass-discrepancy acceleration correlation constitutes convincing evidence that galactic-scale dynamics must be Milgromian. Major problems with inflationary big bang cosmologies remain unresolved.
21:00 – 22:00 Pozorovanie / dokumentárne filmy / diskusie
22:00 – 00:00 Tematické filmy