19 citations · 29 across the 9 of their papers we have counts for
9 papers
Little Red Dots As Super-Eddington Fountain Flows
Nicholas Kaaz, Eliot Quataert, Taya Govreen-Segal +1
Little red dots (LRDs) may be powered by supermassive black holes (SMBHs) accreting above the Eddington limit. Spectroscopy of LRDs often shows absorption troughs blueshifted by $\…
Revisiting GW170817 at milliarcsecond scale: high-precision constraints on jet geometry and
Kelly Gourdji, Adam T. Deller, Chris Flynn +4
The historic detection of gravitational waves from the electromagnetically bright binary neutron star merger GW170817 enabled the first standard siren measurement of Hubble's const…
AT2018cow Powered by a Shock in Aspherical Circumstellar Media
Taya Govreen-Segal, Ehud Nakar, Kenta Hotokezaka +2
We present a quantitative model for the luminous fast blue optical transient AT2018cow in which a shock propagating through an aspherical circumstellar medium (CSM) produces the X-…
AT2024wpp: An Extremely Luminous Fast Ultraviolet Transient Powered by Accretion onto a Black Hole
Daniel A. Perley, Anna Y. Q. Ho, Zoë McGrath +69
We present the discovery of AT 2024wpp ("Whippet"), a fast and luminous 18cow-like transient. At a redshift of z=0.0868, revealed by Keck Cosmic Web Imager spectroscopy of its fain…
X-ray Transmission Through Photoionized Gas with Moderate Thomson Optical Depth
Taya Govreen-Segal, Ehud Nakar, Eliot Quataert
We model the absorption of X-rays by gas obscuring the source and photoionized by it. We consider a broad range of column densities, including both Thomson-thin and Thomson-thick m…
The Structure and Evolution of Relativistic Jetted Blast Waves
Taya Govreen-Segal, Ehud Nakar
We study, analytically and numerically, the structure and evolution of relativistic jetted blast waves that propagate in uniform media, such as those that generate afterglows of ga…
Relativistic Spherical Shocks in Expanding Media
Taya Govreen-Segal, Noam Youngerman, Ishika Palit +3
We investigate the propagation of spherically symmetric shocks in relativistic homologously expanding media with density distributions following a power-law profile in their Lorent…
Analytic Model for Off-Axis GRB Afterglow Images -- Geometry Measurement and Implications for Measuring
Taya Govreen-Segal, Ehud Nakar
We present an analytic model for measuring the jet core angle () and viewing angle () of off-axis gamma-ray bursts independently of the jet angular structure outside…
Spherical shocks in a steep density gradient of expanding media
Taya Govreen-Segal, Ehud Nakar, Amir Levinson
We study the propagation of a Newtonian shock in a spherically symmetric, homologously expanding ejecta. We focus on media with a steep power-law density profile of the form $ρ\pro…