BEGIN:VCALENDAR VERSION:2.0 PRODID:-//AIP Calendar//www.aip.de// BEGIN:VEVENT SUMMARY:Kolloquium | Paul Groot (UCT/SAAO and Radboud University) DTSTART:20260625T123000Z DTEND:20260625T133000Z DTSTAMP:20260622T071835Z UID:www.aip.de-2369 CATEGORIES:Wissenschaftliches CATEGORIES:Wissenschaftlicher Vortrag CATEGORIES:öffentlich CATEGORIES:Kolloquium CONTACT:Ivan Minchev DESCRIPTION:Speaker: Paul Groot (UCT/SAAO and Radboud University)\nTitle: Ultra-compact binaries and gravitational-wave progenitors\nAbstract: Trans ients are lighting up the skies at an ever increasing\ndetection rate acro ss all wavelengths and messengers. 'Classical'\noptical detections have be en joined by all other electromagnetic\nwavelengths\, as well as gravtatio nal waves and neutrinos. This allows\nus not only to probe the physics res ponsible for\, and revealed by\, the\ntransient events themselves\, but al so to use them as probes of their\nunderlying populations. These are often binary systems with at least\none stellar remnant (white dwarf\, neutron star or black hole) and the\ntransient event itself often marks a dramatic and important moment\nin the evolutionary history of such binaries. Under standing the binary\nevolution and physics is important to understand thei r role in various\nphenomena such as supernovae Type Ia\, core-collapse su pernovae\, the\nfirst stars and stellar-mass black holes\, as well as the chemical\nenrichment of the Universe and the physics of accretion disks. \ nThe field of transients\, and in a broader sense\, time-domain astronomy\ ,\nis undergoing a revolution. With more and more instruments we can\ndisc over them at an ever-higher rate\, and response times have come down\nfrom days to minutes. However\, a major bottle neck is the lack of\nspectrosco pic facilities to identify and characterise these events.\nWithin the cont ext of the ESO Expanding Horizon's initiative\, the Time\nDomain Telescope is being defined to remedy this looming gap: a highly\nflexible\, 'on-dem and' facility that will provide immediate\nspectroscopic capability throug h a set of 100 2-meter telescopes that\nare each AO-assisted to provide ne ar-diffraction limited spectroscopy\nat resolutions ranging from 1-100k\, across the 0.4-2.2 micron\nwavelength range. The unit telescopes are all i ndividually steerable\,\nand combining all 100-units on a single target wi ll allow for optical\nspectroscopy at g~25 on a 30 minute time-scale\, pro viding the perfect\nfacility for not only the current generation of transi ent discoverers\nbut also the next who will be using LISA\, Einstein Teles cope\, Athena\,\nArgus\, the Digital Telescopes and many more facilities t o uncover the\ndynamic Universe.\nNote: Host: Alex Schwope\n LOCATION:AIP\; Kirch-Haus\, Konferenzraum END:VEVENT END:VCALENDAR