YCAA Seminar, “Gossips from distant extreme gamma-ray emitters”, Josefa Becerra Gonzalez

Event time: 
Tuesday, September 27, 2016 - 2:30pm to 3:30pm
Hours of operation: 

Coffee/tea and cookies will be served in the coffee lounge of 52HLH starting at 2 PM. Bring your own mug if you have!

Watson (), A-51 See map
60 Sachem St
New Haven, CT 06511
Event description: 

Only around 60 AGNs have been detected so far at Very High Energy (VHE, E>100 GeV) gamma rays, most of them being blazars. Among them only six Flat Spectrum Radio Quasars (FSRQs) have been observed in the VHE band. Despite the difficulty of their detection, FSRQs offer a unique physics scenario to test the AGN structure thanks to their intrinsic gamma-ray absorption within their Broad Line Region (BLR). Gamma-ray blazars are one of the most powerful accelerators of the Universe, and besides the study of their intrinsic properties, they can be used as cosmic lighthouses to probe the cosmic backgrounds as the extragalactic background light (EBL). We will present an overview of the study of VHE FSRQs in a multi-wavelength context as well as the role of VHE blazars on cosmological studies.