Tootfinder

A High Resolution Search for Dual AGNs in Mergers: Pushing the Frontier with Keck AO
Camilo Vazquez, S. Satyapal, G. Canalizo, N. J. Secrest, R. W. Pfeifle, T. Bohn, K. Nyland, A. Aravindan, L. Blecha, J. M. Cann, S. Doan, E. K. Hicks, P. Kurczynski, S. Juneau, M. Malkan, M. McDonald, J. McKaig, P. Nair, B. Rothberg, E. Schwartzman, F. Muller-Sanchez, R. Sexton, V. U

A High Resolution Search for Dual AGNs in Mergers: Pushing the Frontier with Keck AO
Accreting supermassive black holes (SMBHs) in galaxy mergers with separations $<$ 1kpc are crucial to our understanding of SMBH growth, galaxy evolution, and the evolution of SMBH binaries. Despite their importance, there are less than a handful known, and most have been discovered serendipitously. In this work, we employ a new selection method to systematically pre-select candidate advanced mergers likely to contain unresolved substructure at sub-arcsecond scales. By exploiting the large surve…

Can high-redshift AGN observed by JWST explain the EDGES absorption signal?
Alexandra Nelander, Christopher Cain, Jordan C J DSilva, Peter H Sims, Rogier A Windhorst, Judd D Bowman
https://arxiv.org/abs/2507.21230

Can high-redshift AGN observed by JWST explain the EDGES absorption signal?
The Experiment to Detect the Global Epoch of Reionization 21 cm Signal (EDGES) has reported evidence for an absorption feature in the sky-averaged radio background near 78 MHz. A cosmological interpretation of this signal corresponds to absorption of 21 cm photons by neutral hydrogen at $z \sim 17$. The large depth of the signal has been shown to require an excess radio background above the CMB and/or non-standard cooling processes in the IGM. Here, we explore the plausibility of a scenario in …