2017 - 2018 Astro Seminar Schedule

DateEvent TypeSpeakerTitle
09/08/2017Astro SeminarMarcel SchmittfullFundamental physics from the nonlinear Universe [ + Description ]
09/15/2017Astro SeminarNicholas BattagliaLarge-Scale Structure Information Encoded in CMB Photons [ + Description ]
09/22/2017Astro SeminarVivian PoulinCosmological signatures of exotic electromagnetic energy injection [ + Description ]
09/29/2017Astro SeminarTjitske StarkenburgThe diverse history of counterrotating galaxies [ + Description ]
10/06/2017Astro SeminarMansi KasliwalThe Dynamic Infrared Sky [ + Description ]
10/20/2017Astro SeminarJulie ComerfordAGN Fueling and Feedback in Galaxies [ + Description ]
10/27/2017Astro SeminarRenee HlozekNew cosmology with small-scale CMB data: ultra light dark matter, isocurvature and cosmic voids [ + Description ]
11/03/2017Astro SeminarJames PeeblesA Tale of Two Theories: Missing Mass in 1980 and Galaxy Formation Today [ + Description ]
11/10/2017Astro SeminarMatias ZaldarriagaThe spin of the black holes detected by LIGO [ + Description ]
11/17/2017Astro SeminarSarah PearsonThe Milky Way’s Galactic bar can punch holes in stellar streams [ + Description ]
12/01/2017Astro SeminarVera GluscevicDark matter: Searches in the lab and the sky [ + Description ]
01/17/2018Astro Seminar [ + Description ]
01/17/2018Astro SeminarOlivier DelignyTowards locating the ultra-high energy cosmic ray accelerators [ + Description ]
01/23/2018Astro SeminarMarilena LoverdeNeutrinos, Quintessence and Structure Formation in the Universe [ + Description ]
01/30/2018Astro SeminarJennifer BarnesWelcome to the multi-messenger era: a report on the first binary neutron star merger detection [ + Description ]
02/06/2018Astro SeminarPhil ArmitageTidal disruption at home and abroad [ + Description ]
02/13/2018Astro SeminarRyan FoleyDiscovery of the First Electromagnetic Counterpart to a Gravitational Wave Source [ + Description ]
02/20/2018Astro SeminarViviana AcquavivaUnderstanding the Universe through distant galaxies [ + Description ]
02/27/2018Astro SeminarChiara MingarelliInsights into Supermassive Black Hole Mergers, Stalling and Demographics with Pulsar Timing Arrays [ + Description ]
03/06/2018Astro SeminarChang FengMeasuring the Universe at microwave, infrared and gamma-ray wavelengths [ + Description ]
03/13/2018Astro SeminarNo Astro Seminar (spring break) [ + Description ]
03/20/2018Astro SeminarLina NecibEmpirical Determination of the Dark Matter Velocity Distribution [ + Description ]
03/27/2018Astro SeminarJackie FahertyBrown Dwarfs Reveal Exoplanet Secrets [ + Description ]
04/03/2018Astro SeminarChris HaywardStarbursts, outflows, and the emergence of disk galaxies [ + Description ]
04/10/2018Astro SeminarNo Astro Seminar (Big Apple Colloquium) [ + Description ]
04/10/2018Big Apple ColloquiumJulianne DalcantonTba [ + Description ]
04/17/2018Astro SeminarIlsedore CleevesX-ray Driven Time Domain Astrochemistry in Protoplanetary Disks [ -- Description ]

Description: The chemistry of protoplanetary disks sets the initial composition of newly formed planets and may regulate the efficiency by which planets form. Disk chemical abundances typically evolve over timescales spanning thousands if not millions of years. Consequently, it was a surprise when ALMA observations taken over the course of a single year showed significantly variable emission in H13CO+ relative to the otherwise constant thermal dust emission in the IM Lup protoplanetary disk. HCO+ is a known X-ray sensitive molecule, and by using simple time-evolving chemical models including stellar activity, we demonstrate that stellar X-ray flares are a viable explanation for the observed H13CO+ variability. If this link between chemistry and stellar activity is confirmed, simultaneous observations can provide a new tool to measure (and potentially map) fundamental disk parameters, such as electron density, as the light from X-ray flares propagates across the disk. (2:00 PM, 726 Broadway, 940, CCPP Seminar)
04/24/2018Astro SeminarFederica BiancoAre we ready for LSST? [ + Description ]
05/01/2018Astro SeminarBen FarrThe Compact Binary Census after LIGO/Virgo's Second Observing Run [ + Description ]
05/08/2018Astro SeminarKate RowlandsCaught in the act: charting galaxy transformation over cosmic time [ + Description ]

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