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

On the Putative Detection of z>0 X-ray Absorption Features in the Spectrum of Markarian 421

Kavli Affiliate: Andrew P. Rasmussen | First 5 Authors: Andrew P. Rasmussen, Steven M. Kahn, Frits Paerels, Jan Willem den Herder, Jelle Kaastra | Summary: In a series of papers, Nicastro et al. have reported the detection of z>0 OVII absorption features in the spectrum of Mrk421 obtained with the Chandra Low Energy Transmission Grating […]


Continue.. On the Putative Detection of z>0 X-ray Absorption Features in the Spectrum of Markarian 421

On the Putative Detection of z>0 X-ray Absorption Features in the Spectrum of Markarian 421

Kavli Affiliate: Andrew P. Rasmussen | First 5 Authors: Andrew P. Rasmussen, Steven M. Kahn, Frits Paerels, Jan Willem den Herder, Jelle Kaastra | Summary: In a series of papers, Nicastro et al. have reported the detection of z>0 OVII absorption features in the spectrum of Mrk421 obtained with the Chandra Low Energy Transmission Grating […]


Continue.. On the Putative Detection of z>0 X-ray Absorption Features in the Spectrum of Markarian 421

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

Objective Subclass Determination of Sloan Digital Sky Survey Unknown Spectral Objects

Kavli Affiliate: Mark SubbaRao | First 5 Authors: David Bazell, David J. Miller, Mark SubbaRao, , | Summary: We analyze a portion of the SDSS photometric catalog, consisting of approximately 10,000 objects that have been spectroscopically classified into stars, galaxies, QSOs, late-type stars and unknown objects (spectroscopically unclassified objects, SUOs), in order to investigate the […]


Continue.. Objective Subclass Determination of Sloan Digital Sky Survey Unknown Spectral Objects

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

Teaching General Relativity

Kavli Affiliate: Robert Wald | First 5 Authors: Robert M. Wald, , , , | Summary: This Resource Letter provides some guidance on issues that arise in teaching general relativity at both the undergraduate and graduate levels. Particular emphasis is placed on strategies for presenting the mathematical material needed for the formulation of general relativity. […]


Continue.. Teaching General Relativity