Title: Probing the Inner Workings of the Universe's Most Luminous Galaxies via Strong Gravitational Lensing

Special Time: 10:00 - 11:30 am, March 18^th,Monday

Speaker: D. Q. Wang (UMass)

Location: Lecture Hall, 3rd floor

Tencent Meeting：191-754-670  password: 6360

Abstract: Hyperluminous infrared galaxies (HyLIRGs) represent the most luminous galaxies in the Universe. These extreme objects provide a unique opportunity to probe massive galaxy formation processes at cosmic noon. This talk will introduce our survey of 30 gravitationally lensed dusty star-forming galaxies from the Planck All-Sky Survey. Taking advantage of gravitational lensing, we have obtained an unprecedented view of the properties of these young galaxies through extensive multi-wavelength observations. Our X-ray analyses have been particularly revelatory in revealing the underlying high-energy phenomena and processes in the galaxies. Some of them show clear evidence for AGNs, while others exhibit a stunning overproduction of high-mass X-ray binaries. New questions arise about the unique conditions that drive this intense binary production and about the role of AGNs. Our survey highlights the immense potential of gravitational telescopes combined with multi-wavelength studies to unravel the inner workings of extreme star-forming galaxies in the early Universe.