0000000000452434

AUTHOR

Hermann Brunner

showing 2 related works from this author

Asymptotic stability of solutions to Volterra-renewal integral equations with space maps

2012

Abstract In this paper we consider linear Volterra-renewal integral equations (VIEs) whose solutions depend on a space variable, via a map transformation. We investigate the asymptotic properties of the solutions, and study the asymptotic stability of a numerical method based on direct quadrature in time and interpolation in space. We show its properties through test examples.

Asymptotic analysisApplied MathematicsNumerical analysisMathematical analysisvolterra renewalSpace mapVolterra integral equationMethod of matched asymptotic expansionsIntegral equationVolterra integral equationAsymptotic behaviorsymbols.namesakeExponential stabilityRenewal equationAsymptotologysymbolsNyström methodNumerical methodsAnalysisMathematicsJournal of Mathematical Analysis and Applications
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The Chandra COSMOS Survey, I: Overview and Point Source Catalog

2009

The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra} program that has imaged the central 0.5 sq.deg of the COSMOS field (centered at 10h, +02deg) with an effective exposure of ~160ksec, and an outer 0.4sq.deg. area with an effective exposure of ~80ksec. The limiting source detection depths are 1.9e-16 erg cm(-2) s(-1) in the Soft (0.5-2 keV) band, 7.3e(-16) erg cm^-2 s^-1 in the Hard (2-10 keV) band, and 5.7e(-16) erg cm(-2) s(-1) in the Full (0.5-10 keV) band. Here we describe the strategy, design and execution of the C-COSMOS survey, and present the catalog of 1761 point sources detected at a probability of being spurious of <2e(-5) (1655 in the Full, 1340 in the Soft, and…

PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Cosmology and Nongalactic Astrophysics (astro-ph.CO)Field (physics)biologyInfraredPoint sourceFluxFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsLimitingbiology.organism_classificationAcisSpace and Planetary SciencePoint (geometry)Astrophysics - High Energy Astrophysical Phenomenacatalogs – cosmology: observations – galaxies: evolution – quasars: general – surveys – X-rays: generalCosmosAstrophysics - Cosmology and Nongalactic Astrophysics
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