Forskning vid Uppsala universitet

Forskningsprojekt från 2016-01-01 till 2019-12-31

Cool giant stars are strongly affected by dynamical processes. Large-scale convective flows reach deeply into the stars, bringing newly produced elements such as carbon to the surface. Convection and pulsation ...

Forskningsprojekt från 2021-01-01 till 2024-12-31

Enormous sets of observational data are being gathered through a number of planned or active large stellar surveys including 4MOST, APOGEE, GALAH, Gaia-ESO, PLATO, and WEAVE.  These data will enable us ...

Forskningsprojekt från 2015-01-01 till 2018-12-31

Investigation of exosolar planets is one of the most rapidly developing brunches of modern astronomy. But, despite many recent exciting discoveries, nearly all information about exoplanets comes from indirect ...

Forskningsprojekt från 2015-01-01 till 2018-12-31

This application has a two-fold purpose: a grant to cover 50% of my salary allowing me to continue research within the IceCube project and to participate in the design and development of an IceCube extension ...

Forskningsprojekt från 2012-01-01 till 2014-12-31

IceCube is a high energy neutrino detector in operation at the South Pole, designed to search for high-energy neutrino emission from cosmic objects. Candidates expected to emit neutrinos above TeV energies ...

Forskningsprojekt från 2017-01-01 till 2020-12-31

The measurement of stellar chemical abundancesis a fundamental problem in astrophysics. While spectral lines are routinely measured at accuracies of 1%, systematic errors dominate interpretation and errors ...

Forskningsprojekt från 2013-01-01 till 2016-12-31

The measurement of stellar chemical compositions, masses and ages, etc., is a fundamental problem in astrophysics. While stellar spectral lines are routinely measured at accuracies of 1%, systematic errors ...

Forskningsprojekt från 2021-01-01 till 2024-12-31

A key insight from quantum mechanics is the importance of processes involving electron rearrangement, such as charge transfer (CT) in collisions between atoms. In dilute plasmas such as those often observed ...

Forskningsprojekt från 2016-11-01 till 2016-11-30

Giant stars represent the final evolutionary stage for the majority of stars, including our Sun, and has been an important topic for Swedish astronomical research for decades. For the first time we can ...

Forskningsprojekt från 2014-01-01 till 2018-12-31

We apply for the Swedish contribution to M&O costs for IceCube for the coming 5 years. The application is a continuation of the operations grant 821-2010-6026. The annual contribution rate has been ...

Forskningsprojekt från 2019-01-01 till 2022-12-31

We apply for the Swedish contribution to M&O costs for IceCube for the years 2019 -2023. The application is a continuation of the operations grant VR 821-2013-1673. The annual contribution rate has been ...

Forskningsprojekt från 2012-01-01 till 2015-12-31

Luminous cool giant stars are strongly affected by dynamical processes. Giant convection cells reach deeply into the stellar interior and bring newly produced elements such as carbon to the surface. Stellar ...

Forskningsprojekt från 2021-01-01 till 2024-12-31

The framework of string compactifications is of undisputed importance to connect string theory to the physics of our world, and has promoted progress in fields ranging from quantum gravity and cosmology ...

Forskningsprojekt från 2020-01-01 till 2023-12-31

Cool giant and supergiant stars are sources of massive outflows, which determine their final fate. Low- to intermediate-mass stars lose a significant fraction of their mass during the Asymptotic Giant ...

Forskningsprojekt från 2019-12-01 till 2019-12-31

The IceCube Neutrino Observatory at the South Pole is the world´s leading facility for the detection of high-energy neutrinos. Recent breakthroughs include the discovery of a flux of extraterrestrial high-energy ...

Forskningsprojekt från 2021-01-01 till 2024-12-31

The cosmic origin of elements beyond iron in the periodic table is a long standing puzzle. As such, one of the main astrophysical highlights of the last decade is without doubt the indication of rapid ...

Forskningsprojekt från 2017-01-01 till 2020-12-31

This project addresses one of the most important aspects of string theory: the construction of stable ground states that describe our Universe. String solutions with compact extra dimensions may successfully ...

Forskningsprojekt från 2020-01-01 till 2023-12-31

Stellar magnetic activity is as a crucial driver of high-energy radiation, winds, and variability in stellar environments. Consequently, stellar magnetism is one of the key factors determining interior ...

Forskningsprojekt från 2016-01-01 till 2019-12-31

The nature of the dark energy that dominates the universe is unknown, and it is likely that a unified theory of quantum mechanics and gravity is needed to reveal its secrets. String theory has been claimed ...

Forskningsprojekt från 2013-01-01 till 2015-12-31

The focus of my research program is to apply string theory to cosmology. There are many new observations, not the least coming from studies of the CMB, that yield information about the conditions in the ...

Forskningsprojekt från 2012-01-01 till 2015-12-31

The first stars and galaxies may hold the key to solving several cosmological problems, including the reionization of the Universe, the origin of supermassive black holes and possibly even the nature of ...

Forskningsprojekt från 2016-01-01 till 2018-12-31

Stars are arguably the most fundamental macroscopic entities in the hierarchical structure of our universe. Their study bears not only on comprehending stars themselves; stars must be understood also for ...