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 ]

Description: Since the first detection of a cosmic ray with energy in excess of 10^20 eV by J. Linsley in 1963, the origin of these particles, the most energetic produced in nature, is an enduring problem in astroparticle physics. These particles carry the information on the most extreme phenomena in the Universe. At these energies, even charged particles could be magnetically rigid enough to keep track of the original positions of their sources on the sky. Recent analyses of data recorded at the Pierre Auger Observatory provide evidence that these particles originate from far away galaxies. The evidence is twofold. First, by studying the distribution of the arrival directions above 8x10^18 eV, an anisotropy at 5.2 standard deviations has been revealed. The pattern of this anisotropy, well described by a dipole with an amplitude of ~6.5%, is incompatible with any structure suggestive of an origin from the Milky Way. Second, a new analysis of the cumulative dataset has captured an anisotropy above ~4x10^19 eV on an intermediate angular scale through comparison to the flux pattern of nearby star-forming galaxies, which are strong gamma ray emitters. In this seminar, the consequences of these recent findings will be discussed, together with prospects for future more sensitive studies. (2:00 PM, 726 Broadway, 940, CCPP Seminar)
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 ]
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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