Quantifying Variability of YSOs in the Mid-IR Over Six Years with NEOWISE

Posted by klaurent Peking

Kavli Affiliate: Gregory Herczeg | First 5 Authors: Wooseok Park, Jeong-Eun Lee, Carlos Contreras Peña, Doug Johnstone, Gregory Herczeg | Summary: Variability in young stellar objects (YSOs) can be caused by various time-dependent phenomena associated with star formation, including accretion rates, geometric changes in the circumstellar disks, stochastic hydromagnetic interactions between stellar surfaces and inner […]


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The JCMT Transient Survey: Four Year Summary of Monitoring the Submillimeter Variability of Protostars

Posted by klaurent Peking

Kavli Affiliate: Gregory Herczeg | First 5 Authors: Yong-Hee Lee, Doug Johnstone, Jeong-Eun Lee, Gregory Herczeg, Steve Mairs | Summary: We present the four-year survey results of monthly submillimeter monitoring of eight nearby ($< 500 $pc) star-forming regions by the JCMT Transient Survey. We apply the Lomb-Scargle Periodogram technique to search for and characterize variability […]


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Thermodynamics of light management in near-field thermophotovoltaics

Posted by dbos Berkeley

Kavli Affiliate: Eli Yablonovitch | First 5 Authors: Georgia T. Papadakis, Meir Orenstein, Eli Yablonovitch, Shanhui Fan, | Summary: We evaluate near-field thermophotovoltaic (TPV) energy conversion systems focusing in particular on their open-circuit voltage (Voc). Unlike previous analyses based largely on numerical simulations with fluctuational electrodynamics, here, we develop an analytic model that captures the […]


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Planets Across Space and Time (PAST). II: Catalog and Analyses of the LAMOST-Gaia-Kepler Stellar Kinematic Properties

Posted by klaurent Peking

Kavli Affiliate: Subo Dong | First 5 Authors: Di-Chang Chen, Jia-Yi Yang, Ji-Wei Xie, Ji-Lin Zhou, Subo Dong | Summary: The Kepler telescope has discovered over 4,000 planets (candidates) by searching ? 200,000 stars over a wide range of distance (order of kpc) in our Galaxy. Characterizing the kinematic properties (e.g., Galactic component membership and […]


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Smallest Remnants of Early Matter Domination

Posted by klaurent Chicago

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 […]


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Modeling Nearest Neighbor distributions of biased tracers using Hybrid Effective Field Theory

Posted by klaurent Stanford

Kavli Affiliate: Tom Abel | First 5 Authors: Arka Banerjee, Nickolas Kokron, Tom Abel, , | Summary: We investigate the application of Hybrid Effective Field Theory (HEFT) — which combines a Lagrangian bias expansion with subsequent particle dynamics from $N$-body simulations — to the modeling of $k$-Nearest Neighbor Cumulative Distribution Functions ($k{rm NN}$-${rm CDF}$s) of […]


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UV Fluorescence Traces Gas and LyA Evolution in Protoplanetary Disks

Posted by klaurent Peking

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 […]


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Analysis of Polarimetry Data with Angular Uncertainties

Posted by klaurent MIT

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 […]


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Femtojoule, femtosecond all-optical switching in lithium niobate nanophotonics

Posted by klaurent Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Qiushi Guo, Ryoto Sekine, Luis Ledezma, Rajveer Nehra, Devin J. Dean | Summary: Optical nonlinear functions are crucial for various applications in integrated photonics, such as all-optical information processing, photonic neural networks and on-chip ultrafast light sources. Due to the weak nonlinearities in most integrated photonic platforms, […]


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