WeiKang Zheng

TL;DR: In this article, a selected sample of 50 long-period, low-extinction Milky Way Cepheids measured on the same WFC3 F555W, F814W, and F160W-band photometric system as extragalactic Cepsheids in SN Ia hosts were observed with the optical and near-infrared to mitigate saturation and reduce pixel-to-pixel calibration errors.

TL;DR: In this article, the authors reported evidence for excess blue light from the Type Ia supernova SN 2012cg at fifteen and sixteen days before maximum B-band brightness, consistent with predictions for the impact of the supernova on a non-degenerate binary companion.

TL;DR: In this article, the authors present early and late observations of the optical counterpart of the very energetic GRB 130427A, which is at the high end of the GRB energy distribution, with an isotropic-equivalent energy release of E iso ~ 9.6 × 1053 erg, more than an order of magnitude more energetic than other GRBs with spectroscopically confirmed SNe.

TL;DR: In this paper, an early-time photometry and spectroscopy of supernova (SN) 2013df in NGC 4414 has been obtained, with notable similarities to SN 1993J.

TL;DR: In this paper, a low-latency analysis pipeline was used to identify and localize GW event candidates and to reconstruct maps of possible sky locations, and a catalog of nearby galaxies and Milky Way globular clusters were used to select the most promising sky positions to be imaged.