Khagol issue_116

Meeting on Physics and Astrophysics at the eXtreme (PAX) The fourth edition of the Meeting on Physics andAstrophysics at the eXtreme (PAX) was held at IUCAA, during August 7 - 10, 2018. There were about 110 participants from India and abroad. The main objective of this meeting was to examine what new physics, astrophysics, and current and future gravitational wave detectors would unravel, in conjunction with other electromagnetic and particle observations. However, one of the highlighted themes for this editionwas the Tests of General Relativity. The structure of the meeting was different from the traditional conferences, in that, there were no formal structured lectures, but panel discussions involving experts, both in the panels and in the audience on outstanding problems in various topics related to gravitational wave physics and astrophysics. The panel discussion sessions were on: (i) Vacuum Spacetimes, (ii) Matter Spacetimes, (iii) Tests of General Relativity, (iv) Electromagnetic Counterparts, (v) Cosmology, (vi) Instruments, (vii) 3G Science Drivers, (viii) Analysis Challenges, and (ix) New and Emerging Methods, led by Bala Iyer (ICTS - TIFR, Bengaluru), Badri Krishnan (AEI - MPG, Germany), Alessandro Nagar (IHES, Turin University, Italy), Paul Lasky (Monash University, Melbourne, Australia), P. Ajith (ICTS - TIFR, Bengaluru), K.G. Arun (CMI, Chennai), Mansi Kasliwal (CalTech, USA), Kenta Hotokezaka (Princeton University, USA), Chris Messenger (University of Glasgow, UK), Archisman Ghosh (NIKHEF,Amsterdam, Netherlands), RanaAdhikari (CalTech, USA), B. Sathyaprakash (Pennsylvania State University, USA), Bernard Whiting (University of Florida, USA), and Rajesh Nayak (IISER, Kolkata). As a part of the meeting, on the first day evening, there was a public lecture by B. Sathyaprakash, at IISER, Pune. The organizers were Sukanta Bose, Ajit Kembhavi, Sanjit Mitra, Somak Raychaudhury, andTarun Souradeep (all fromIUCAA). | KHAG L | No. 116 - OCTOBER 2018 | 07