Percent-level constraints on baryonic feedback with spectral distortion measurements

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Leander Thiele, Digvijay Wadekar, J. Colin Hill, Nicholas Battaglia, Jens Chluba | Summary: High-significance measurements of the monopole thermal Sunyaev-Zel’dovich CMB spectral distortions have the potential to tightly constrain poorly understood baryonic feedback processes. The sky-averaged Compton-y distortion and its relativistic correction are measures of the total […]


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A census of 163 large-scale (>=10 pc), velocity-coherent filaments in inner Galactic plane: physical properties, dense gas fraction, and association with spiral arms

Posted by klaurent Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Yifei Ge, Ke Wang, , , | Summary: The interstellar medium has a highly filamentary and hierarchical structure, which may play a significant role in star formation. A systematical study on the large-scale filaments towards their physical parameters, distribution, structures and kinematics will inform us of what […]


Continue.. A census of 163 large-scale (>=10 pc), velocity-coherent filaments in inner Galactic plane: physical properties, dense gas fraction, and association with spiral arms

Augmenting astrophysical scaling relations with machine learning : application to reducing the SZ flux-mass scatter

Posted by klaurent Tokyo

Kavli Affiliate: David N. Spergel | First 5 Authors: Digvijay Wadekar, Leander Thiele, Francisco Villaescusa-Navarro, J. Colin Hill, Miles Cranmer | Summary: Complex systems (stars, supernovae, galaxies, and clusters) often exhibit low scatter relations between observable properties (e.g., luminosity, velocity dispersion, oscillation period, temperature). These scaling relations can illuminate the underlying physics and can provide […]


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The CAMELS project: public data release

Posted by klaurent Tokyo

Kavli Affiliate: David N. Spergel | First 5 Authors: Francisco Villaescusa-Navarro, Shy Genel, Daniel Anglés-Alcázar, Lucia A. Perez, Pablo Villanueva-Domingo | Summary: The Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS) project was developed to combine cosmology with astrophysics through thousands of cosmological hydrodynamic simulations and machine learning. CAMELS contains 4,233 cosmological simulations, 2,049 N-body […]


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Evidence of large recoil velocity from a black hole merger signal

Posted by klaurent MIT

Kavli Affiliate: Salvatore Vitale | First 5 Authors: Vijay Varma, Sylvia Biscoveanu, Tousif Islam, Feroz H. Shaik, Carl-Johan Haster | Summary: The final black hole left behind after a binary black hole merger can attain a recoil velocity, or a "kick", reaching values up to 5000 km/s. This phenomenon has important implications for gravitational wave […]


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Classification of solutions to several semi-linear polyharmonic equations and fractional equations

Posted by klaurent Peking

Kavli Affiliate: Feng Yuan | First 5 Authors: Zhuoran Du, Zhenping Feng, Yuan Li, , | Summary: We are concerned with the following semi-linear polyharmonic equation with integral constraint begin{align} left{begin{array}{rl} &(-Delta)^pu=u^gamma_+ ~~ mbox{ in }{mathbb{R}^n},\ nonumber &int_{mathbb{R}^n}u_+^{gamma}dx<+infty, end{array}right. end{align} where $n>2p$, $pgeq2$ and $pinmathbb{Z}$. We obtain for $gammain(1,frac{n}{n-2p})$ that any nonconstant solution satisfying certain […]


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Current Challenges in Cepheid Distance Calibrations Using Gaia EDR3

Posted by Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Kayla A. Owens, Wendy L. Freedman, Barry F. Madore, Abigail J. Lee, | Summary: Using parallaxes from Gaia Early Data Release 3 (EDR3), we determine multi-wavelength BVI, JHK, and [3.6] & [4.5] micron absolute magnitudes for 37 nearby Milky Way Cepheids, covering the period range between […]


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Nonvolatile Electric-Field Control of Inversion Symmetry

Posted by klaurent Cornell

Kavli Affiliate: Darrell G. Schlom | First 5 Authors: Lucas Caretta, Yu-Tsun Shao, Jia Yu, Antonio B. Mei, Bastien F. Grosso | Summary: In condensed-matter systems, competition between ground states at phase boundaries can lead to significant changes in material properties under external stimuli, particularly when these ground states have different crystal symmetries. A key […]


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Optimal control of nonequilibrium systems through automatic differentiation

Posted by klaurent Harvard

Kavli Affiliate: Michael P. Brenner | First 5 Authors: Megan C. Engel, Jamie A. Smith, Michael P. Brenner, , | Summary: Controlling the evolution of nonequilibrium systems to minimize dissipated heat or work is a key goal for designing nanodevices, both in nanotechnology and biology. Progress in computing optimal protocols has thus far been limited […]


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