Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Y. P. Elsworth"'
Autor:
M. S. Lundkvist, H. Kjeldsen, S. Albrecht, G. R. Davies, S. Basu, D. Huber, A. B. Justesen, C. Karoff, V. Silva Aguirre, V. Van Eylen, C. Vang, T. Arentoft, T. Barclay, T. R. Bedding, T. L. Campante, W. J. Chaplin, J. Christensen-Dalsgaard, Y. P. Elsworth, R. L. Gilliland, R. Handberg, S. Hekker, S. D. Kawaler, M. N. Lund, T. S. Metcalfe, A. Miglio, J. F. Rowe, D. Stello, B. Tingley, T. R. White
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Theory predicts a deficit of super-Earth sized planets, which orbit close to their host star. Here, Lundkvist et al. use data from the NASA Kepler mission to show that this deficit is also seen in observations, thereby providing new insight into exop
Externí odkaz:
https://doaj.org/article/d95148d1c8274e9bbe651b540714a08c
Publikováno v:
RAS Techniques and Instruments. 2:142-147
The Birmingham Solar Oscillations Network (BiSON) observes acoustic oscillations of the Sun. The dominant noise source is caused by fluctuations of Earth’s atmosphere, and BiSON seeks to mitigate this effect by combining multiple rapid observations
Publikováno v:
RAS Techniques and Instruments. 1:58-64
We describe a new spectrophotometer for the Birmingham Solar Oscillations Network (BiSON), based on a next generation observation platform, BiSON:NG, a significantly miniaturised system making use of inexpensive consumer-grade hardware and off-the-sh
Publikováno v:
Howe, R, Chaplin, W J, Elsworth, Y P, Hale, S J & Nielsen, M B 2022, ' Unexpected solar-cycle variation of acoustic mode power in Sun-as-a-star observations ', Monthly Notices of the Royal Astronomical Society, vol. 514, no. 3, pp. 3821-3827 . https://doi.org/10.1093/mnras/stac1534
We examine the solar-cycle variation of the power in the low-degree helioseismic modes by looking at binned power spectra from 45 years of observations with the Birmingham Solar Oscillations Network, which provides a more robust estimate of the mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d8cf7f2ee2c9b4cc546775dd66758dd
https://pure.au.dk/portal/da/publications/unexpected-solarcycle-variation-of-acoustic-mode-power-in-sunasastar-observations(484896ea-16cb-47a4-9db1-bfb311764f51).html
https://pure.au.dk/portal/da/publications/unexpected-solarcycle-variation-of-acoustic-mode-power-in-sunasastar-observations(484896ea-16cb-47a4-9db1-bfb311764f51).html
Publikováno v:
Research Notes of the AAS. 6:261
We present an up-to-date latitude–time map of the solar zonal flows at 0.99 R ⊙ from global helioseismology using data from the Global Oscillation Network Group, the Michelson Doppler Imager, and the Helioseismic and Magnetic Imager.
Autor:
Rafael A. García, David Salabert, M. S. Cunha, William J. Chaplin, Mikkel N. Lund, Tiago L. Campante, René Kiefer, Y. P. Elsworth, R. Howe, G. R. Davies, A. R. G. Santos
Publikováno v:
Proceedings of the International Astronomical Union. 13:225-228
The properties of the acoustic modes are sensitive to magnetic activity. The unprecedented long-term Kepler photometry, thus, allows stellar magnetic cycles to be studied through asteroseismology. We search for signatures of magnetic cycles in the se
Autor:
Dennis Stello, Andrew Tkachenko, Jørgen Christensen-Dalsgaard, L. Paterno, Y. P. Elsworth, Rita Ventura, D. Cardini, Paul G. Beck, Rafael A. García, M. P. Di Mauro, Guy R. Davies, K. De Smedt, Saskia Hekker, Woiciech A. Dziembowski, Benoit Mosser, Steven Bloemen
Publikováno v:
The Astrophysical Journal, 817, 1-16
The Astrophysical Journal, 817, 1, pp. 1-16
The Astrophysical Journal
The Astrophysical Journal, 2016, 817 (1), pp.65. ⟨10.3847/0004-637X/817/1/65⟩
The Astrophysical Journal, American Astronomical Society, 2016, 817 (1), pp.65. ⟨10.3847/0004-637X/817/1/65⟩
Di Mauro, M P, Ventura, R, Cardini, D, Stello, D, Christensen-Dalsgaard, J, Dziembowski, W A, Paternò, L, Beck, P G, Bloemen, S, Davies, G R, De Smedt, K, Elsworth, Y, Garcia, R A, Hekker, S, Mosser, B & Tkachenko, A 2016, ' Internal rotation of the red-giant star KIC 4448777 by means of asteroseismic inversion ', Astrophysical Journal, vol. 817, no. 1, 65 . https://doi.org/10.3847/0004-637X/817/1/65
The Astrophysical Journal, 817, 1, pp. 1-16
The Astrophysical Journal
The Astrophysical Journal, 2016, 817 (1), pp.65. ⟨10.3847/0004-637X/817/1/65⟩
The Astrophysical Journal, American Astronomical Society, 2016, 817 (1), pp.65. ⟨10.3847/0004-637X/817/1/65⟩
Di Mauro, M P, Ventura, R, Cardini, D, Stello, D, Christensen-Dalsgaard, J, Dziembowski, W A, Paternò, L, Beck, P G, Bloemen, S, Davies, G R, De Smedt, K, Elsworth, Y, Garcia, R A, Hekker, S, Mosser, B & Tkachenko, A 2016, ' Internal rotation of the red-giant star KIC 4448777 by means of asteroseismic inversion ', Astrophysical Journal, vol. 817, no. 1, 65 . https://doi.org/10.3847/0004-637X/817/1/65
In this paper we study the dynamics of the stellar interior of the early red-giant star KIC 4448777 by asteroseismic inversion of 14 splittings of the dipole mixed modes obtained from {\it Kepler} observations. In order to overcome the complexity of
Publikováno v:
Research Notes of the AAS. 4:177
Autor:
Jesper Schou, William J. Chaplin, Frank Hill, Michael Thompson, Rudolf Komm, G. R. Davies, Rachel Howe, Y. P. Elsworth
Publikováno v:
Howe, R, Hill, F, Komm, R, Chaplin, W J, Elsworth, Y, Davies, G R, Schou, J & Thompson, M J 2018, ' Signatures of Solar Cycle 25 in Subsurface Zonal Flows ', Astrophysical Journal Letters, vol. 862, no. 1, 5 . https://doi.org/10.3847/2041-8213/aad1ed
The pattern of migrating zonal flow bands associated with the solar cycle, known as the torsional oscillation, has been monitored with continuous global helioseismic observations by the Global Oscillations Network Group, together with those made by t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c4479a0e44400ff6eb7c7df35938810
https://pure.au.dk/portal/da/publications/signatures-of-solar-cycle-25-in-subsurface-zonal-flows(6c4bf59d-7cf6-4e94-9579-9d1be1debfc6).html
https://pure.au.dk/portal/da/publications/signatures-of-solar-cycle-25-in-subsurface-zonal-flows(6c4bf59d-7cf6-4e94-9579-9d1be1debfc6).html
Autor:
Tiago L. Campante, Guy R. Davies, A. R. G. Santos, William J. Chaplin, Rachel Howe, Rafael A. García, Margarida S. Cunha, David Salabert, Y. P. Elsworth, Mikkel N. Lund, René Kiefer
Publikováno v:
Santos, A R G, Campante, T L, Chaplin, W J, Cunha, M S, Lund, M N, Kiefer, R, Salabert, D, Garcia, R A, Davies, G R, Elsworth, Y & Howe, R 2018, ' Signatures of Magnetic Activity in the Seismic Data of Solar-type Stars Observed by Kepler ', Astrophysical Journal, Supplement Series, vol. 237, no. 1, 17 . https://doi.org/10.3847/1538-4365/aac9b6
In the Sun, the frequencies of the acoustic modes are observed to vary in phase with the magnetic activity level. These frequency variations are expected to be common in solar-type stars and contain information about the activity-related changes that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50e3a32e21ba5d4e5afbe66b62e8e1da
https://pure.au.dk/portal/da/publications/signatures-of-magnetic-activity-in-the-seismic-data-of-solartype-stars-observed-by-kepler(ab13b793-87a1-4c69-966a-48c90e726c2d).html
https://pure.au.dk/portal/da/publications/signatures-of-magnetic-activity-in-the-seismic-data-of-solartype-stars-observed-by-kepler(ab13b793-87a1-4c69-966a-48c90e726c2d).html