{"id":null,"code":"TÄHT7053","name":{"valueFi":"Spectroscopic Diagnostics in Astrophysics","valueEn":"Spectroscopic Diagnostics in Astrophysics","valueSv":"Spectroscopic Diagnostics in Astrophysics"},"credits":8.0,"minCredits":8,"maxCredits":8,"tags":[],"createdAt":1790534754830,"contentList":[{"title":{"valueFi":"Osaamistavoitteet","valueEn":"Learning outcomes","valueSv":""},"content":{"valueFi":"","valueEn":"After completing the course the student should be able to: Describe astrophysical applications of spectroscopy to study the properties of interstellar medium, supernovae and other types of astrophysical transients; Understand the processes of emission and absorption of line radiation by atoms and molecules; Explain how spectral lines are formed and interpret spectral line profiles; Describe the observed effects in the spectra by interstellar dust and estimate dust extinctions; Calculate properties of radiatively excited regions including ionisation and recombination of hydrogen and excitation of and cooling by forbidden lines; Use the relative intensities of emission lines for estimating electron densities and temperatures; Calculate level populations and the resulting line luminosities in local thermodynamic equilibrium (LTE) conditions; Calculate level populations under non-LTE conditions by using the statistical equilibrium equations; Use spectroscopy to estimate elemental abundances; Solve problems on all the topics in the syllabus; Develop self-study skills.","valueSv":""}},{"title":{"valueFi":"Sisältö","valueEn":"Content","valueSv":""},"content":{"valueFi":"","valueEn":"This course illustrates how spectroscopic data can be used as a powerful diagnostics in astrophysics in order to determine physical properties such as electron densities, temperatures, elemental compositions and velocities. The astrophysical environments considered range from the interstellar medium of our galaxy and other galaxies to some of the most extreme objects in astronomy such as supernovae and other types of stellar explosions that are studies at the University of Turku. This includes the explosions of certain types of stars as thermonuclear (type Ia) supernovae and core-collapse (types II, Ib and Ic) supernovae. Spectroscopic studies of other types of astrophysical transients such as tidal disruption events of stars by supermassive black holes at the centres of galaxies and the electromagnetic counterparts to gravitational wave sources detected by the LIGO and Virgo experiments are discussed as well.","valueSv":""}},{"title":{"valueFi":"Suoritustavat","valueEn":"Study methods","valueSv":""},"content":{"valueFi":"","valueEn":"Written exam and exercises; oral presentation.","valueSv":""}},{"title":{"valueFi":"Toteutustavat","valueEn":"Course unit methods","valueSv":""},"content":{"valueFi":"","valueEn":"Lectures 36 h Exercises and seminars 20 h incl. homework, computer task, oral presentation.","valueSv":""}},{"title":{"valueFi":"Oppimateriaalit","valueEn":"Learning material","valueSv":""},"content":{"valueFi":"","valueEn":"Lecture notes and articles; The Physics of the Interstellar Medium (J.E. Dyson and D.A. Williams, Manchester University Press. 2nd Edition); Interpreting Astronomical Spectra (D. Emerson, Wiley, 1996).","valueSv":""}},{"title":{"valueFi":"Lisätiedot","valueEn":"Further information","valueSv":""},"content":{"valueFi":"","valueEn":"Course will be given every other spring (in odd years).","valueSv":""}},{"title":{"valueFi":"Kurssikirjallisuus","valueEn":"Literature","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}},{"title":{"valueFi":"Esitietovaatimukset","valueEn":"Qualifications","valueSv":""},"content":{"valueFi":"","valueEn":"Theoretical Astrophysics (TÄHT6009), Stellar structure and evolution (TÄHT7040).","valueSv":""}},{"title":{"valueFi":"Arviointiasteikko","valueEn":"Assessment scale","valueSv":""},"content":{"valueFi":"0-5","valueEn":"0-5","valueSv":"0-5"}},{"title":{"valueFi":"Arviointikriteerit","valueEn":"Assessment criteria","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}},{"title":{"valueFi":"Arviointikriteerit 2","valueEn":"Assessment criteria 2","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}},{"title":{"valueFi":"Arviointikriteerit 3","valueEn":"Assessment criteria 3","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}},{"title":{"valueFi":"Arviointikriteerit 4","valueEn":"Assessment criteria 4","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}},{"title":{"valueFi":"Kielet","valueEn":"Languages","valueSv":""},"content":{"valueFi":"englanti","valueEn":"English","valueSv":"engelska"}},{"title":{"valueFi":"Taso","valueEn":"Level","valueSv":""},"content":{"valueFi":"Syventävät opinnot","valueEn":"Advanced Studies","valueSv":""}},{"title":{"valueFi":"Oppiaine","valueEn":"Subject","valueSv":""},"content":{"valueFi":"Tähtitiede","valueEn":"Astronomy","valueSv":"Astronomy"}},{"title":{"valueFi":"Vastuuhenkilöt","valueEn":"Person in charge","valueSv":""},"content":{"valueFi":"Seppo Mattila, Rubina Kotak","valueEn":"Seppo Mattila, Rubina Kotak","valueSv":"Seppo Mattila, Rubina Kotak"}},{"title":{"valueFi":"Luokittelu","valueEn":"Classification","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}},{"title":{"valueFi":"Linkit","valueEn":"Links","valueSv":""},"content":{"valueFi":"","valueEn":"","valueSv":""}}]}