Bøger af Sara Seager

In The Smallest Lights in the Universe, MIT astrophysicist Sara Seager interweaves the story of her search for meaning and solace after losing her first husband to cancer, her unflagging search for an Earth-like exoplanet and her unexpected discovery of new love.

Sara Seager : la femme qui pourrait découvrir une autre Terre.Le récit d'une quête spirituelle et intime, à la fois dans ce monde et bien au-delà...En tant qu'astrophysicienne spécialiste des exoplanètes – ces planètes qui orbitent autour d'une étoile autre que le Soleil –, Sara Seager a passé une grande partie de sa vie la tête dans les étoiles. Pas facile dans ces circonstances de garder les pieds sur terre. Mais l'amour de son mari, Mike, et de ses deux fils lui permet de naviguer entre les mondes avec une relative aisance, malgré son trouble du spectre autistique. Lorsque Mike succombe à un cancer, cet équilibre précaire s'effondre et la vie de Sara menace d'être engloutie par une douleur autrement plus profonde que les mystères du cosmos. Pour celle qui a consacré sa carrière à rechercher des preuves de vie dans l'univers, accepter les mains tendues sur Terre va se révéler salutaire.© Sara Seager, 2020. Tous droits réservés.© Presses de la Cité, 2021, pour la traduction française

Over the past twenty years, astronomers have identified hundreds of extrasolar planets--planets orbiting stars other than the sun. Recent research in this burgeoning field has made it possible to observe and measure the atmospheres of these exoplanets. This is the first textbook to describe the basic physical processes--including radiative transfer, molecular absorption, and chemical processes--common to all planetary atmospheres, as well as the transit, eclipse, and thermal phase variation observations that are unique to exoplanets. In each chapter, Sara Seager offers a conceptual introduction, examples that combine the relevant physics equations with real data, and exercises. Topics range from foundational knowledge, such as the origin of atmospheric composition and planetary spectra, to more advanced concepts, such as solutions to the radiative transfer equation, polarization, and molecular and condensate opacities. Since planets vary widely in their atmospheric properties, Seager emphasizes the major physical processes that govern all planetary atmospheres. Moving from first principles to cutting-edge research, Exoplanet Atmospheres is an ideal resource for students and researchers in astronomy and earth sciences, one that will help prepare them for the next generation of planetary science. The first textbook to describe exoplanet atmospheres Illustrates concepts using examples grounded in real data Provides a step-by-step guide to understanding the structure and emergent spectrum of a planetary atmosphere Includes exercises for students