Joint Institute for Laboratory Astrophysics

Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy

Abstract We construct and characterise a sample of 146 little red dots (LRDs) across 2.0 < z < 9.3, selecting all sources with v-shaped UV-optical continua from JWST NIRSpec/PRISM spectra and compact morphologies in NIRCam/F444W imaging. We show that LRD continuum spectra are wel...

Clifford(11,1) String Theory I: Geometry

Abstract This paper explores tachyonic, open bosonic string theory in which fermions are not strings, but rather reside on the D-brane boundary of open strings. The open-string tachyon is identified with a Higgs field transforming in the adjoint representation. The fermions of a...