Thus the solar system is a natural laboratory to study plasma phenomena such as … This is an important test because the use of Type Ia supernovae for cosmology hinges on the assumption that the populations are similar and that Type Ia supernovae can be calibrated as "standard candles" out to redshifts of around one. Our work on these problems involves N-body simulation as well as more analytical approaches. On small angular scales, early formation of galaxy clusters, radio galaxies and quasars inevitably provide energy input into the intergalactic medium and generate fine- scale temperature anisotropies. Type Ia supernova SN 1994D in the galaxy NGC 4526, observed by the HST. Research Topics massive stars: 3-D Radiative Transfer modelling stellar winds colliding winds Hypergiants stellar evolution : AGB-stars planetary nebulae binary and multiple systems. List of Interesting Physics Research Project Topics. Very different conditions hold in the nuclei of starburst and active galaxies, but here too interstellar material plays a key role, often girdling the galaxy nuclei and hiding them from direct view and leading to different classifications of Seyfert galaxies. The mechanism for transporting gas from ~100 pc scales to the immediate vicinity of the black hole is not well understood, although bars and Linblad resonances do play a vital role. R. Johnson, D. Rigopoulou, P. Roche, I. Soechting, The UK is a 25 percent partner in the international Gemini Observatory which operates two 8-m telescopes on the best observing sites in the world, Mauna Kea in Hawaii and Cerro Pachon in Chile. Determination of the three-dimensional structure of the Universe requires surveys covering a large fraction of the observable Universe, and these surveys must account for a variety of biases and projection effects. A few galaxies have core regions with stellar kinematics that are completely decoupled from those of the rest of the galaxy and this is taken as an indication of a past merger, but when did it occur? For example, in globular clusters, LMXBs may form as a result of the tidal capture of a neutron star by a normal star. In particular, we have made the first redshift surveys of faint radio galaxies. Current research in observational astrophysics and cosmology at Stanford covers a wide range of approaches to tackling the most important frontiers. Several members of the Astrophysics Group are part of the Space Plasma Climate Section. The various binary interactions (mass loss, mass accretion and merging) can fundamentally change the structure of a massive star and may thereby account for many of the observational supernova sub-classes. The physics of compact objects; ... as these can be used for a variety of applications in astrophysics, like for example mapping the gas and dust within our Milky Way. Research Activity. We are also using the new generation of high-frequency radio surveys to identify sources whose radio jets have very recently been triggered. We are also determining how the entropy injected into the intergalactic medium by jets influences galaxy formation and evolution. Through a developing link with the CLRC's Rutherford Appleton Laboratory (also involved in the FMOS project) we are also contributing to the design and construction of a new 4-m. class survey telescope (VISTA) which will be sited close to the VLT in Chile in 2006. After tedious research … For example, the Earth’s magnetosphere plasma surrounds the planet, protecting it from high-speed solar wind – the plasma that is ejected from the sun. Parks Road San Francisco, California, United States About Blog This feed is for physicists, … Nowadays the standard way to attack it is by using an extension of Schwarzschild's orbit-superposition method. Savilian Professor of Astronomy: Professor Joe Silk Philip Wetton Professor of Astrophysics & Head of Astrophysics: Professor Roger Davies Professor Steve Rawlings Research at Oxford spans a wide range of astronomy and astrophysics, from the largest scales in the Universe to observational work on stars and the interstellar medium. We are particularly interested in applying this theory to two of the most interesting nearby supernovae of our generation, SN 1987A and SN 1993J. However, it can be a daunting task to find unique, interesting topics like the ones listed below: How can physics reduce global warming? Finally, Oxford scientists are working with colleagues in Europe to define the next generation of Extremely Large Telescopes (ELTs). 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