Selaus oppiaineen mukaan kokoelmassa Opinnäytetöiden tiivistelmät (ei kokotekstiä) Tähtitiede
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Avoimen tähtijoukon M44:n tähtien fotometrinen seuranta eksoplaneetan ylikulun havaitsemiseen käyttämällä Tuorlan 70 cm:n kaukoputkea
(Turun yliopisto, 02.11.2016)Tutkielmaa varten seurattiin avointa tähtijoukkoa M44. Joidenkin tähtien valokäyrän aikamuutoksia havaittiin fotometrisesti mahdollisien ylikulkujen aikana kuvaamalla tähtiä Tuorlan 70 cm:n kaukoputkella valkoisessa valossa. ... -
Flux decay during thermonuclear X-ray bursts: Decay rate analysis with the dynamic power-law index method
(Turun yliopisto, 07.06.2017)The cooling of type-I X-ray bursts can be used to probe the nuclear burning conditions in neutron star envelopes.The flux decay of the bursts has been traditionally modelled with an exponential, even if theoretical ... -
Late-time near-infrared evolution of the ejecta and the equatorial ring of Supernova 1987A
(Turun yliopisto, 23.05.2018)Supernova 1987A, located 50 kpc away in the Large Magellanic Cloud, is the closest supernova (SN) observed in the time of modern astronomy. The circumstellar medium of SN 1987A is characterised by a system of three rings ... -
Long-term optical monitoring of Blazars
(Turun yliopisto, 02.01.2017)Blazars are a polarized, extremely variable and highly energetic Active Galactic Nuclei which are assumed to be powered by a central black hole. The study of their multi-wavelength spectra has provided significant information ... -
Magnetospheric truncation of an accretion disk around the unique X-ray pulsar GRO J1744-28
(Turun yliopisto, 24.05.2017)Neutron stars are very massive yet compact objects, where both quantum mechanical and relativistic effects play a role. Many of them have magnetic fields which are many orders of magnitude stronger than what mankind can ... -
Near-infraread observation of supernovae with the Nordic Optical Telescope (NOT)
(Turun yliopisto, 15.06.2016)Supernova (SN) is an explosion of a star at the end of its lifetime. SNe are classified to two types, namely type I and II through the optical spectra. They have been categorised based on their explosion mechanism, to core ... -
Optisen polarisaation ja gammavuovaihteluiden vertailu blasaarisuihkuissa
(Turun yliopisto, 16.05.2017)Tutkielma käsittelee aktiivisten galaksiytimien erikoistapausta blasaareja ja kuinka niiden ominaisuuksia tutkitaan tarkkailemalla niistä lähtevän optisen säteilyn polarisaatiota vertaamalla sitä samanaikaiseen korkeaenergiseen ... -
Spectroscopic Studies of Fermi LAT Blazars
(Turun yliopisto, 15.06.2016)Blazar research offers a view to one of the most energetic physical processes known to man. The high-energy end of blazar emission has been probed by the Fermi satellite mission since 2008, and it has catalogued more ... -
The Starving Ellipticals of Fossil Groups
(Turun yliopisto, 05.09.2018)Fossil Groups (FGs) are unique galaxy systems with extensive X-ray halos and large magnitude gaps between members. It has been theorized that they are old and dynamically relaxed systems formed by multiple galaxy mergers. ...
