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SUMMARY:How to sparkle in gamma rays
DTSTART:20260422T110000Z
DTEND:20260422T120000Z
DTSTAMP:20260427T042800Z
UID:indico-event-2544@indico.ifae.es
DESCRIPTION:Speakers: Sarah Wagner\n\nIf visible to the human eye\, the ni
 ght sky would sparkle in gamma rays. This flickering arises from the extre
 me variability of blazar jets (alongside gamma-ray bursts and galactic sou
 rces). In this talk\, I introduce active galactic nuclei (AGN) and blazars
  which are powered by supermassive black holes at the centers of galaxies.
  I present the established blazar classification into Flat Spectrum Radio 
 Quasars (FSRQs) and BL Lac objects (BLLs)\, traditionally defined by their
  emission-line properties. I then show that their gamma-ray variability al
 so differs systematically. Using stochastic time-series modeling with Orns
 tein–Uhlenbeck processes\, I characterize blazar light curves in terms o
 f variability amplitude and correlation timescale. FSRQs exhibit faster\, 
 more erratic variability\, while BLLs show smoother\, longer-memory behavi
 or. These results suggest that variability is not just a byproduct\, but a
  probe of the underlying jet physics—offering new constraints on the env
 ironments and emission mechanisms powering gamma-ray blazars.\n\nhttps://i
 ndico.ifae.es/event/2544/
LOCATION:IFAE Seminar Room (In-person)
URL:https://indico.ifae.es/event/2544/
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