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 […]


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

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 […]


Continue.. The CAMELS project: public data release

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 […]


Continue.. Evidence of large recoil velocity from a black hole merger signal

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 […]


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