Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC, Jelena Aleksi?

Автор: Hamish Gordon
Название: Searches for CP Violation in Charmed Meson Decays
ISBN: 3319070665 ISBN-13(EAN): 9783319070667
Издательство: Springer
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Цена: 15672.00 р.
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Описание: Our current understanding of the fundamental building blocks of the Universe, summarised by the Standard Model of particle physics, is incomplete. To explain this asymmetry requires, among other effects, a mechanism known as charge-parity (CP) violation that causes differences between the rates at which particles and antiparticles decay.

Автор: Haywood
Название: Radial-velocity Searches for Planets Around Active Stars
ISBN: 3319412728 ISBN-13(EAN): 9783319412726
Издательство: Springer
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Цена: 14365.00 р.
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Описание: This thesis develops new and powerful methods for identifying planetary signals in the presence of “noise” generated by stellar activity, and explores the physical origin of stellar intrinsic variability, using unique observations of the Sun seen as a star. In particular, it establishes that the intrinsic stellar radial-velocity variations mainly arise from suppression of photospheric convection by magnetic fields. With the advent of powerful telescopes and instruments we are now on the verge of discovering real Earth twins in orbit around other stars. The intrinsic variability of the host stars themselves, however, currently remains the main obstacle to determining the masses of such small planets. The methods developed here combine Gaussian-process regression for modeling the correlated signals arising from evolving active regions on a rotating star, and Bayesian model selection methods for distinguishing genuine planetary signals from false positives produced by stellar magnetic activity.