Kavli Affiliate: Erin Kara | First 5 Authors: Honghui Liu, Jiachen Jiang, Zuobin Zhang, Cosimo Bambi, Andrew C. Fabian | Summary: We present a high-density relativistic reflection analysis of 21 spectra of six black hole X-ray binaries in the hard state with data from textit{NuSTAR} and textit{Swift}. We find that 76% of the observations in […]
Kavli Affiliate: Michael M. Fausnaugh | First 5 Authors: Michael M. Fausnaugh, Rahul Jayaraman, Roland Vanderspek, George R. Ricker, Christopher J. Burke | Summary: We present the TESS light curve of GRB 230307A. We find two distinct components: a bright, prompt optical component at the time of the Fermi observation that peaked at TESS magnitude […]
Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Sarah Kubiak, Andrew Vanderburg, Juliette Becker, Bruce Gary, Saul A. Rappaport | Summary: WD 1856+534 b (or WD 1856 b for short) is the first known transiting planet candidate around a white dwarf star. WD 1856 b is about the size of Jupiter, has a mass […]
Kavli Affiliate: Herman L. Marshall | First 5 Authors: Alexandra Veledina, Fabio Muleri, Juri Poutanen, Jakub Podgorný, Michal Dovčiak | Summary: The accretion of matter by compact objects can be inhibited by radiation pressure if the luminosity exceeds the critical value, known as the Eddington limit. Discovery of ultraluminous X-ray sources has shown that accretion […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Natalí S. M. de Santi, Helen Shao, Francisco Villaescusa-Navarro, L. Raul Abramo, Romain Teyssier | Summary: We train graph neural networks to perform field-level likelihood-free inference using galaxy catalogs from state-of-the-art hydrodynamic simulations of the CAMELS project. Our models are rotational, translational, and permutation invariant and do […]
Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Megan Masterson, Erin Kara, Dheeraj R. Pasham, Daniel J. D’Orazio, Dominic J. Walton | Summary: The nuclear transient AT2019cuk/Tick Tock/SDSS J1430+2303 has been suggested to harbor a supermassive black hole (SMBH) binary near coalescence. We report results from high-cadence NICER X-ray monitoring with multiple visits per […]
Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Megan Masterson, Erin Kara, Dheeraj R. Pasham, Daniel J. D’Orazio, Dominic J. Walton | Summary: The nuclear transient AT2019cuk/Tick Tock/SDSS J1430+2303 has been suggested to harbor a supermassive black hole (SMBH) binary near coalescence. We report results from high-cadence NICER X-ray monitoring with multiple visits per […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Stuart Robert Anderson, Steven Gough-Kelly, Victor P. Debattista, Min Du, Peter Erwin | Summary: From the TNG50 cosmological simulation we build a sample of 191 well-resolved barred galaxies with a stellar mass $log M_star > 10$ at $z=0$. We search for box/peanut bulges (BPs) in this sample, […]
Kavli Affiliate: Erin A. Kara | First 5 Authors: Y. Homayouni, Gisella De Rosa, Rachel Plesha, Gerard A. Kriss, Aaron J. Barth | Summary: We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the active galactic nucleus Mrk817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space […]
Kavli Affiliate: Erin A. Kara | First 5 Authors: Y. Homayouni, Gisella De Rosa, Rachel Plesha, Gerard A. Kriss, Aaron J. Barth | Summary: We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the active galactic nucleus Mrk817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space […]