Kavli Affiliate: Nicola Omodei | First 5 Authors: Rahul Gupta, Rahul Gupta, , , | Summary: We present a comprehensive multiwavelength analysis of GRB 240825A, a bright gamma-ray burst (GRB) detected by Fermi and Swift, with a prompt duration ($T_rm 90$ ~ 4 sec in 50-300 keV) near the boundary separating short and long GRBs, […]
Kavli Affiliate: Susan E. Clark | First 5 Authors: Yiqi Liu, Yiqi Liu, , , | Summary: We investigate how dust foreground complexity can affect measurements of the tensor-to-scalar ratio, $r$, in the context of the Simons Observatory, using a cross-spectrum component separation analysis. Employing a suite of simulations with realistic Galactic dust emission, we […]
Kavli Affiliate: Chao-Lin Kuo | First 5 Authors: A. R. Khalife, A. R. Khalife, , , | Summary: We present the most up-to-date constraints on axion early dark energy (AEDE) from cosmic microwave background (CMB) and baryon acoustic oscillation (BAO) measurements. In particular, we assess the impact of data from ground-based CMB experiments, the South […]
Kavli Affiliate: Steven M. Kahn | First 5 Authors: Yize Dong, Yize Dong, , , | Summary: We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), using archival images from the Dark Energy Camera (DECam) as templates for difference imaging. […]
Kavli Affiliate: Aaron Roodman | First 5 Authors: Riley Clarke, Riley Clarke, , , | Summary: We present the first derivation of a stellar flare temperature profile from single-band photometry. Stellar flare DWF030225.574-545707.45129 was detected in 2015 by the Dark Energy Camera as part of the Deeper, Wider, Faster Programme. The brightness ($Delta m_g = […]
Kavli Affiliate: Aaron Roodman | First 5 Authors: Riley Clarke, Riley Clarke, , , | Summary: We present the first derivation of a stellar flare temperature profile from single-band photometry. Stellar flare DWF030225.574-545707.45129 was detected in 2015 by the Dark Energy Camera as part of the Deeper, Wider, Faster Programme. The brightness ($Delta m_g = […]
Kavli Affiliate: Bruce Macintosh | First 5 Authors: , , , , | Summary: Young exoplanets provide a critical link between understanding planet formation and atmospheric evolution. Direct imaging spectroscopy allows us to infer the properties of young, wide orbit, giant planets with high signal-to-noise. This allows us to compare this young population to exoplanets […]
Kavli Affiliate: Steven W. Allen | First 5 Authors: Zhefu Yu, Zhefu Yu, , , | Summary: X-ray reverberation, which exploits the time delays between variability in different energy bands as a function of Fourier frequency, probes the structure of the inner accretion disks and X-ray coronae of active galactic nuclei. We present a systematic […]
Kavli Affiliate: Sven Herrmann | First 5 Authors: Piotr Maj, Piotr Maj, , , | Summary: We present a Virtual Frisch-Grid geometry-based CZT gamma detector developed for identifying different radioisotopes over an energy range from single keV up to 2 MeV, and useful for efficient characterization of CZT crystals. The detector is built with a […]
Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Jenny T. Wan, Jenny T. Wan, , , | Summary: The advent of JWST has revolutionized the study of faint satellite galaxies at $z gtrsim 1$, enabling statistical constraints on galaxy evolution and the galaxy$-$halo connection in a previously unexplored mass and redshift regime. We compare […]