The Niels Bohr International Academy at the Niels Bohr Institute invites expressions of interest for Postdoctoral Fellowships in Gravitational Physics for a fixed period of up to three (2+1) years, with a preferred starting date in Fall 2022. Exceptional and highly motivated candidates will also be considered for 5-year positions at the Assistant Professor level.

The successful candidate will have the opportunity to guide more junior fellows, teach courses at various levels, participate in outreach activities, and organize international meetings. To receive full consideration, interested candidates should upload the material requested below before November 10th, 2021. The search will remain open until the optimal candidate is found.

In the field of strong gravity, several positions are available through the Villum Investigator Grant "Illuminating the Dark Universe with Gravitational Waves" (IluGra) led by Vitor Cardoso. The successful candidates will join an ambitious research program addressing the physics of black holes, including black hole spectroscopy, black hole singularities and that of possible exotic compact objects. It further includes the exploration of black holes as engines of discovery, including implications for dark matter physics and connections to particle physics.

Positions are also open in the field of gravitational-wave astrophysics through the Villum Young Investigator Grant "Gravitational Wave Astrophysics" led by Johan Samsing. In this field we are especially looking for candidates interested in modeling the astrophysical formation of gravitational wave sources, their possible EM and GW signals, and how GW observatories, such as LIGO/Virgo, LISA, DECIGO, CE/ET, can be used to probe their astrophysical origin. However, applications from outstanding candidates in complementary fields are also warmly welcomed.

A position is further open in the area of General Relativity from quantum scattering amplitudes under the DFF grant "Black Holes and Extreme Gravitational Forces" led by Emil Bjerrum-Bohr. The successful candidate will work on tree and loop scattering amplitudes in gauge and gravity theories and apply analytic results from such computations to derive general relativity from quantum field theory. Recent themes in such research include for instance, derivation of gravitational wave post-Minkowskian and post-Newtonian physics, as well as analytic work on spin and finite size effects in such computations.

These multiple hires are part of a vigorous expansion at the Niels Bohr International Academy into the field of Gravitational Physics, bringing together a number of scientists from several areas of theoretical physics and astrophysics and addressing some of the most burning questions related to gravity. More information can be found through the website Gravitational Physics at Niels Bohr International Academy.

The Niels Bohr International Academy is hosted by the Niels Bohr Institute and functions as a primary center for fundamental research, including theoretical and computational astrophysics, cosmology, high-energy particle physics, condensed matter physics, and bio-physics. The Academy hosts a large number of international programs, including visitors, workshops, and PhD schools.

The University of Copenhagen wishes to reflect the diversity of society and welcomes applications from all qualified candidates regardless of personal background. Postdoctoral Fellows at the University of Copenhagen receive a competitive salary (including pension) and funds for travel and computing. Generous parental leave, state-subsidized childcare, vacation, and full medical care are provided to employees in Denmark. A favorable tax scheme is generally granted to international researchers.