BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//INPA - ECPv6.8.3//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://inpa.lbl.gov
X-WR-CALDESC:Events for INPA
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20180311T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20181104T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180223T120000
DTEND;TZID=America/Los_Angeles:20180223T130000
DTSTAMP:20260527T084944
CREATED:20180216T165728Z
LAST-MODIFIED:20180216T191248Z
UID:351-1519387200-1519390800@inpa.lbl.gov
SUMMARY:Dan Wilkins (Stanford) - Seeing to the Event Horizons of Supermassive Black Holes
DESCRIPTION:From the reflection and reverberation of X-rays off the innermost regions of AGN accretion discs\, a three-dimensional picture is starting to emerge of the extreme environments around supermassive black holes in which intense X-ray emission is produced and jets are launched at close to the speed of light. \n  \nRecent advances in the analysis of the X-ray emission and its variability in AGN\, observed by the great X-ray observatories\, coupled with general relativistic ray tracing simulations\, have revealed vast amounts of information about the extreme environments in the immediate vicinity of the black hole event horizon. The effects of general relativity on the reflected emission can be exploited to pinpoint the location of reflection in the strong gravitational field\, while time delays in the X-ray echoes off the accretion disc enable the structure of the innermost regions to be mapped. \n  \nWe discover how the X-ray emitting corona evolves on long and short timescales\, giving rise to orders of magnitude variation in luminosity as well as the processes the corona can undergo during transient events\, most notably the collimation and ejection of portions of the corona during X-ray flares\, reminiscent of the aborted launching of a jet. The latest X-ray reverberation studies are revealing\, for the first time\, structure within the corona including a persistent collimated core akin to the base of a jet\, even in radio-quiet sources\, alongside a second component associated with the accretion disc itself. \n  \nThis gives us important insight into the small-scale processes close to the event horizon that enable supermassive black holes to power some of the most luminous objects in the Universe\, launch vast jets and play their important role in the formation of structure in the Universe.
URL:https://inpa.lbl.gov/event/dan-wilkins-stanford/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
END:VCALENDAR