67 citations · 188 across the 7 of their papers we have counts for
7 papers
Predicting Stellar Parameters of Massive Stars from Light Curves with Machine Learning
Rachel C. Zhang, Kaze W. K. Wong, Gonzalo Holgado +1
High-resolution spectroscopic measurements of OB stars are important for understanding processes like stellar evolution, but require labor-intensive observations. In contrast, phot…
On the Likely Dynamical Origin of GW191109 and of Binary Black Hole Mergers with Negative Effective Spin
Rachel C. Zhang, Giacomo Fragione, Chase Kimball +1
With the growing number of binary black hole (BBH) mergers detected by LIGO/Virgo/KAGRA, several systems have become difficult to explain via isolated binary evolution, having comp…
X-ray Reverberation Mapping of Ark 564 using Gaussian Process Regression
Collin D. Lewin, Erin Kara, Daniel R. Wilkins +15
Ark 564 is an extreme high-Eddington Narrow-line Seyfert 1 galaxy, known for being one of the brightest, most rapidly variable soft X-ray AGN, and for having one of the lowest temp…
The CHIME Fast Radio Burst Population Does Not Track the Star Formation History of the Universe
Rachel C. Zhang, Bing Zhang
The redshift distribution of fast radio bursts (FRBs) is not well constrained. The association of the Galactic FRB 200428 with the young magnetar SGR 1935+2154 raises the working h…
On the energy and redshift distributions of fast radio bursts
Rachel C. Zhang, Bing Zhang, Ye Li +1
Fast radio bursts (FRBs) are millisecond-duration radio transients from cosmological distances. Their isotropic energies follow a power-law distribution with a possible exponential…
Dynamical instability and its implications for planetary system architecture
Dong-Hong Wu, Rachel C. Zhang, Ji-Lin Zhou +1
We examine the effects that dynamical instability has on shaping the orbital properties of exoplanetary systems. Using N-body simulations of non-EMS (Equal Mutual Separation), mult…
Disks in the sky: A reassessment of the WMAP "cold spot"
Ray Zhang, Dragan Huterer
We reassess the evidence that WMAP temperature maps contain a statistically significant "cold spot" by repeating the analysis using simple circular top-hat (disk) weights, as well…