Christoffer Karoff
Associate professor, VILLUM Young Investigator
Department of Physics and Astronomy
Ny Munkegade 120
building 1520, 433
8000 Aarhus C
Denmark
Mobile: +4521183926
Høegh-Guldbergs Gade 2
building 1671, 218
8000 Aarhus C
Denmark
Mobile: +4521183926
I am teaching in:
- The second year course Stjerner
- The master and PhD course Solar Activity and Climate
- The master and PhD course Renewable energy
Research areas
- Nature and Technology > Astronomy > Astrophysics
- Nature and Technology > Astronomy > The Sun
- Nature and Technology > Geology > Global climate change
- Environment, climate and energy > Climate > Global warming
- Nature and Technology > Astronomy > Asteroseismology
- Nature and Technology > Astronomy > Satellites
- Nature and Technology > Astronomy > Stars
- Nature and Technology > Astronomy > Planets
- Nature and Technology > Astronomy > Ole Rømer Observatory
- Nature and Technology > Astronomy > ESA and ESO
- Nature and Technology > Astronomy > NASA
- Nature and Technology > Geology > Climate of the past
- Environment, climate and energy > Climate > Ozone (including breakdown of the Ozone layer)
- Nature and Technology > Theory of Science and Mathematics > History of sciences and mathematics
- Nature and Technology > Physics: Applications and technology > Carbon 14 dating
Profile
The overall focus of my research is the evolution of stars and planetary systems. The idea is that only by combining seismic observations of stellar interiors with complementary spectroscopic and photometric observations of the stellar surfaces can we obtain a complete understanding of the stars and their evolution over time. Here it is particularly important that we have an understanding of the evolution of the short wavelength activity related to stellar cycles of the host stars.
By using detailed observations of the Sun we can obtain a specific understanding of the internal structure of the Sun and its activity, but it is only by using observations of other stars that we can obtain a general understanding of the evolution of stars and planetary systems, including the Sun and the solar system, which will in turn help us to understand what effect the changing Sun has had on the climate and thus on the evolution of life on the Earth.
- Published
Sounding stellar cycles with Kepler - I. Strategy for selecting targets
Karoff, C., Metcalfe, T. S., Chaplin, W. J., Elsworth, Y., Kjeldsen, H., Arentoft, T. & Buzasi, D. 2009 In : Royal Astronomical Society. Monthly Notices. 399, 2, p. 914-923Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article
- Published
Sounding stellar cycles with Kepler - II. Ground-based observations★
Karoff, C., Metcalfe, T. S., Chaplin, W. J., Frandsen, S., Grundahl, F., Kjeldsen, H., Christensen-Dalsgaard, J., Nielsen, M. B., Frimann, S., Thygesen, A. O., Arentoft, T., Amby, T. M., Sousa, S. G. & Buzasi, D. L. 1 Aug 2013 In : Royal Astronomical Society. Monthly Notices. 433, 4, p. 3227-3238 2 p.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article
- Published
Evidence that solar flares drive global oscillations in the Sun
Karoff, C. & Kjeldsen, H. 2008 In : Astrophysical Journal. 678, p. L73-L76Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article
- Published
Temporal variations in the acoustic signal from faculae
Karoff, C. 1 Apr 2012 In : Royal Astronomical Society. Monthly Notices. 421, 4, p. 3170-3179 10 p.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article
- Published
Observations of Intensity Fluctuations Attributed to Granulation and Faculae on Sun-like Stars from the Kepler Mission
Karoff, C., Campante, T. L., Ballot, J., Kallinger, T., Gruberbauer, M., García, R. A., Caldwell, D. A., Christiansen, J. L. & Kinemuchi, K. 1 Apr 2013 In : Astrophysical Journal. 767, 1, p. 34Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article
Project
Project
Med Solen som nabo
Activity: Talk or presentation › Lecture and oral contribution
Complementary observations of stellar cycles
Activity: Talk or presentation › Lecture and oral contribution
Med Solen som nabo
Activity: Talk or presentation › Lecture and oral contribution
Selvudnævnt dommedags-profet: På søndag starter syv års katastrofe
Press/Media: Press / Media
Jorden gik ikke under alligevel
Press/Media: Press / Media
Forsker: Jorden går ikke under lørdag
Press/Media: Press / Media
ID: 4450