Conduction Effect of Thermal Radiation in a Metal Shield Pipe in a Cryostat for a Cryogenic Interferometric Gravitational Wave Detector

Kavli Affiliate: Tomiyoshi Haruyama | First 5 Authors: Takayuki Tomaru, Masao Tokunari, Kazuaki Kuroda, Takashi Uchiyama, Akira Okutomi | Summary: A large heat load caused by thermal radiation through a metal shield pipe was observed in a cooling test of a cryostat for a prototype of a cryogenic interferometric gravitational wave detector. The heat load […]


Continue.. Conduction Effect of Thermal Radiation in a Metal Shield Pipe in a Cryostat for a Cryogenic Interferometric Gravitational Wave Detector

Effects of mode degeneracy in the LIGO Livingston Observatory recycling cavity

Kavli Affiliate: Peter K. Fritschel | First 5 Authors: Andri M. Gretarsson, Erika D’Ambrosio, Valery Frolov, Brian O’Reilly, Peter K. Fritschel | Summary: We analyze the electromagnetic fields in a Pound-Drever-Hall locked, marginally unstable, Fabry-Perot cavity as a function of small changes in the cavity length during resonance. More specifically, we compare the results of […]


Continue.. Effects of mode degeneracy in the LIGO Livingston Observatory recycling cavity

Equivariant orbifold structures on the projective line and integrable hierarchies

Kavli Affiliate: Todor E. Milanov | First 5 Authors: Todor E. Milanov, Hsian-Hua Tseng, , , | Summary: Let $CP^1_{k,m}$ be the orbifold structure on $CP^1$ obtained via uniformizing the neighborhoods of 0 and $infty$ respectively by $zmapsto z^k$ and $wmapsto w^m.$ The diagonal action of the torus on the projective line induces naturally an […]


Continue.. Equivariant orbifold structures on the projective line and integrable hierarchies

The spaces of Laurent polynomials, $mathbb{P}^1$-orbifolds, and integrable hierarchies

Kavli Affiliate: Todor E. Milanov | First 5 Authors: Todor E. Milanov, Hsian-Hua Tseng, , , | Summary: Let $M_{k,m}$ be the space of Laurent polynomials in one variable $x^k + t_1 x^{k-1}+… t_{k+m}x^{-m},$ where $k,mgeq 1$ are fixed integers and $t_{k+m}neq 0$. According to B. Dubrovin cite{D}, $M_{k,m}$ can be equipped with a semi-simple […]


Continue.. The spaces of Laurent polynomials, $mathbb{P}^1$-orbifolds, and integrable hierarchies

Gromov–Witten Theory of CP^1 and Integrable Hierarchies

Kavli Affiliate: Todor E. Milanov | First 5 Authors: Todor E. Milanov, , , , | Summary: The ancestor Gromov–Witten invariants of a compact {Kahler} manifold $X$ can be organized in a generating function called the total ancestor potential of $X$. In this paper, we construct Hirota Quadratic Equations (HQE shortly) for the total ancestor […]


Continue.. Gromov–Witten Theory of CP^1 and Integrable Hierarchies

X-ray flare modeling in the single giant HR 9024

Kavli Affiliate: David Huenemoerder | First 5 Authors: Paola Testa, David Garcia-Alvarez, Fabio Reale, David Huenemoerder, | Summary: We analyze a Chandra-HETGS observation of the single G-type giant HR 9024. The high flux allows us to examine spectral line and continuum diagnostics at high temporal resolution, to derive plasma parameters (thermal distribution, abundances, temperature, …). […]


Continue.. X-ray flare modeling in the single giant HR 9024

A Galactic Origin for the Local Ionized X-ray Absorbers

Kavli Affiliate: Claude Canizares | First 5 Authors: Taotao Fang, Christopher McKee, Claude Canizares, Mark Wolfire, | Summary: Recent Chandra and XMM observations of distant quasars have shown strong local (z~0) X-ray absorption lines from highly ionized gas, primarily He-like oxygen. The nature of these X-ray absorbers, i.e., whether they are part of the hot […]


Continue.. A Galactic Origin for the Local Ionized X-ray Absorbers

The First Chandra Field

Kavli Affiliate: Robert A. Cameron | First 5 Authors: Martin C. Weisskopf, Thomas L. Aldcroft, Robert A. Cameron, Poshak Gandhi, Cédric Foellmi | Summary: Before the official first-light images, the Chandra X-Ray Observatory obtained an X-ray image of the field to which its focal plane was first exposed. We describe this historic observation and report […]


Continue.. The First Chandra Field

Swimming in circles: Motion of bacteria near solid boundaries

Kavli Affiliate: George M. Whitesides | First 5 Authors: Eric Lauga, Willow R. DiLuzio, George M. Whitesides, Howard A. Stone, | Summary: Near a solid boundary, E. coli swims in clockwise circular motion. We provide a hydrodynamic model for this behavior. We show that circular trajectories are natural consequences of force-free and torque-free swimming, and […]


Continue.. Swimming in circles: Motion of bacteria near solid boundaries