A Deep Exposure in High Resolution X-Rays Reveals the Hottest Plasma in the $ζ,$Puppis Wind

Posted by klaurent MIT

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: David P. Huenemoerder, Richard Ignace, Nathan A. Miller, Kenneth G. Gayley, Wolf-Rainer Hamann | Summary: We have obtained a very deep exposure (813 ks) of $zeta,$Puppis (O4 supergiant) with the Chandra/HETG Spectrometer. Here we report on analysis of the 1-9 r{A} region, especially well suited for […]


Continue.. A Deep Exposure in High Resolution X-Rays Reveals the Hottest Plasma in the $ζ,$Puppis Wind

Bounds for exit times of Brownian motion and the first Dirichlet eigenvalue for the Laplacian

Posted by klaurent Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Rodrigo Banuelos, Phanuel Mariano, Jing Wang, , | Summary: For domains in $mathbb{R}^d$, $dgeq 2$, we prove universal upper and lower bounds on the product of the bottom of the spectrum for the Laplacian to the power $p>0$ and the supremum over all starting points of the […]


Continue.. Bounds for exit times of Brownian motion and the first Dirichlet eigenvalue for the Laplacian