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PDF-Version Institutsseminar SoSe2012

(Stand 14.05.2012)


Institutsseminar, Freitag, 20. April 2012, 10:15-12 Uhr, Kleiner Hörsaal Biologie Erbertstraße
Prof. Marten van Kerkwijk (U Toronto)

"White dwarf binaries, mergers, and explosions"

Abstract:   Stars in binaries often have much more exciting lives, deaths, and afterlives than single ones.  I will review the especially varied possibilities involving white dwarfs, which include revival and total annihilation.  The latter leads to so-called type Ia supernova explosions, for which empirical calibrations of their luminosities have allowed the measurement of the acceleration of the expansion of the Universe.  The standard theoretical picture, in which unstable fusion is ignited in white dwarfs that approach or are made to exceed the largest possible (Chandrasekhar) mass, has a number of problems.  I will discuss these problems and will show that they would be resolved if instead, as I will propose, the ignition occurs more generally when two carbon-oxygen white dwarfs merge.

Institutsseminar, Freitag, 27. April 2012, 10-12 Uhr

Markus Mugrauer, Tobias Schmidt (AIU Jena)

"PZ Tel b/B - orbital fit, disk constraints and first spectral observations"

Institutsseminar, Freitag, 4. Mai 2012, 10-12 Uhr

Prof. Marc Kuchner (NASA Goddard)

"Debris disks and planets" (tentative title)

Institutsseminar, Freitag, 11. Mai 2012, 11-12 Uhr Seminarraum AIU

Martin Seeliger (AIU)

"Vorstellung FIASCO-Pipeline"

Evtl. Fortsetzung ab 12:00 Uhr im Teeraum AIU!

Institutsseminar, Freitag, 25. Mai 2012, 10-12 Uhr

Feyerabend, Fruhnert, Schneider

Vorstellungen für Theorie-Doktorandenstelle

Institutsseminar, Freitag, 08. Juni 2012, 10-12 Uhr

Stefanie Rätz (AIU)

"Transit Timing Variations" (PhD test talk)

Institutsseminar, Freitag, 15. Juni 2012, 10-12 Uhr

Theorie-Gruppe (AIU)

"Grenoble Conference" (Bericht)

Institutsseminar, Freitag, 22. Juni 2012, 10-12 Uhr

Ludwig Trepl (AIU)

"Suche nach Neutronensternen im XMM Katalog" (PhD test talk)

Institutsseminar, Freitag, 29. Juni 2012, 10-12 Uhr

Conny Jäger (IFK)

"Formation of GEMS from interstellar silicate dust"

Institutsseminar, Freitag, 07. Juli 2012, 10-12 Uhr

Baha Dincel (METU Ankara)

"Runaway stars in supernova remnants"

Institutsseminar, Freitag, 13. Juli 2012, 10-12 Uhr

Markus Mugrauer und Tobias Schmist (AIU)

"TBD" (evtl. Konferenzbericht ESO planet formation)


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