Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Sjoert van Velzen, Dheeraj R. Pasham, Stefanie Komossa, Lin Yan, Erin A. Kara | Summary: Stellar tidal disruption events (TDEs) are typically discovered by transient emission due to accretion or shocks of the stellar debris. Yet this luminous flare can be reprocessed by gas or dust […]
Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Ziyan Xu, Gregory J. Herczeg, Christopher M. Johns-Krull, Kevin France, | Summary: We present an analysis of wind absorption in the C II ${lambda}1335$ doublet towards 40 classical T Tauri stars with archival far-ultraviolet (FUV) spectra obtained by the Hubble Space Telescope. Absorption features produced by […]
Kavli Affiliate: Albert Stebbins | First 5 Authors: Gabriela Barenboim, Nikita Blinov, Albert Stebbins, , | Summary: The evolution of the universe prior to Big Bang Nucleosynthesis could have gone through a phase of early matter domination (EMD) which enhanced the growth of small-scale dark matter structure. If EMD was long enough, self-gravitating objects formed […]
Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Nicole Arulanantham, Kevin France, Keri Hoadley, P. C. Schneider, Catherine C. Espaillat | Summary: Ultraviolet spectra of protoplanetary disks trace distributions of warm gas at radii where rocky planets form. We combine HST-COS observations of H2 and CO emission from 12 classical T Tauri stars to […]
Kavli Affiliate: Herman L. Marshall | First 5 Authors: Herman L. Marshall, , , , | Summary: For a track based polarimeter, such as the Imaging X-ray Polarimetry Explorer (IXPE), the sensitivity to polarization depends on the modulation factor, which is a strong function of energy. In previous work, a likelihood method was developed that […]
Kavli Affiliate: Susan E. Clark | First 5 Authors: Enrique Lopez-Rodriguez, Rainer Beck, Susan E. Clark, Annie Hughes, Alejandro S. Borlaff | Summary: Galactic bars are frequent in disk galaxies and they may support the transfer of matter towards the central engine of active nuclei. The barred galaxy NGC 1097 has magnetic forces controlling the […]
Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: The CHIME/FRB Collaboration, Bridget C. Andersen, Kevin Bandura, Mohit Bhardwaj, P. J. Boyle | Summary: The origin of fast radio bursts (FRBs), millisecond-duration flashes of radio waves that are visible at distances of billions of light-years, remains an open astrophysical question. Here we report the detection […]
Kavli Affiliate: Roger W. Romani | First 5 Authors: D. Kandel, Roger W. Romani, Hongjun An, , | Summary: In a multi-orbit (100 ks) $mathrm{it XMM-Newton}$ exposure of the original black widow pulsar, PSR J1959+2048, we measure the strong orbital modulation caused by intrabinary shock (IBS) emission. The IBS light curve peak appears asymmetric, which […]
Kavli Affiliate: Ran Wang | First 5 Authors: , , , , | Summary: This paper develops a data-based approach to the closed-loop output feedback control of nonlinear dynamical systems with a partial nonlinear observation model. We propose an information state based approach to rigorously transform the partially observed problem into a fully observed problem […]
Kavli Affiliate: Jeffrey J. McMahon | First 5 Authors: Sumit Dahal, John W. Appel, Rahul Datta, Michael K. Brewer, Aamir Ali | Summary: The Cosmology Large Angular Scale Surveyor (CLASS) observes the polarized cosmic microwave background (CMB) over the angular scales of 1$^circ lesssim theta leq$ 90$^circ$ with the aim of characterizing primordial gravitational waves […]