Challenges of Relativistic Astrophysics

TL;DR

This paper reviews key unresolved challenges in relativistic astrophysics across compact objects, dark sector, plasma phenomena, and early universe physics, highlighting their importance for understanding fundamental physics through cosmic observations.

Contribution

It identifies twelve major challenges in relativistic astrophysics, emphasizing their role in uncovering new physics via large-scale universe studies.

Findings

Identification of twelve key challenges in relativistic astrophysics.

Discussion of future observational and theoretical prospects.

Insights into physics at the universe's beginning.

Abstract

I discuss some of the most outstanding challenges in relativistic astrophysics in the subjects of: compact objects (Black Holes and Neutron Stars); dark sector (Dark Matter and Dark Energy); plasma astrophysics (Origin of Jets, Cosmic Rays and Magnetic Fields) and the primordial universe (Physics at the beginning of the Universe). In these four subjects, I discuss twelve of the most important challenges. These challenges give us insight into new physics that can only be studied in the large scale Universe. The near future possibilities, in observations and theory, for addressing these challenges, are also discussed.