CK
C. Karoff
astro-ph.SRastro-ph.EPastro-phastro-ph.IM11-y solar cycleastro-ph.GAastro-ph.HEclimate modelGHG forcingphysics.bio-ph
On Valency
published · living versionsW_mp27h5rs·v1 · currentpublished
An ancient extrasolar system with five sub-Earth-size planets
with T. L. Campante, T. Barclay, J. J. Swift, D. Huber +36
1 version
W_9evfarev·v1published
W_kb3x8n5g·v1published
W_q4evxp3r·v1published
Preprints & journals
96 papers in the corpus · 2007–2025Testing a Computed Tomography Imaging Spectrometer for Earth Observations on the HEIMDAL Stratospheric Balloon Mission2508.19693v1 · Mads Juul Ahleb\aek, Albertino Antonio Almeida Bach, Loui Collin-Enoch et al.2025 · 0 citationsarXiv
The PLATO Mission2406.05447v2 · Heike Rauer, Conny Aerts, Juan Cabrera et al.2024 · 13 citationsarXiv
Possible detection of coronal mass ejections on late-type main-sequence stars in LAMOST medium-resolution spectra2205.09972v1 · Hong-peng Lu, Hui Tian, Li-yun Zhang et al.2022 · 43 citationsA&A 663, A140 (2022)
A General Overview for Localizing Short Gamma-ray Bursts with a CubeSat Mega-Constellation2009.00078v1 · Fadil Inceoglu, Nestor J. Hernandez Marcano, Rune H. Jacobsen et al.2020 · 4 citationsarXiv
HAYDN -- High-precision AsteroseismologY of DeNse stellar fields (ESA Voyage 2050 White Paper)1908.05129v2 · Andrea Miglio, Leo Girardi, Frank Grundahl et al.2019 · 0 citationsExp Astron (2021)
Signatures of magnetic activity: On the relation between stellar properties and p-mode frequency variations1908.02897v1 · A. R. G. Santos, T. L. Campante, W. J. Chaplin et al.2019 · 20 citationsarXiv
Slowdown of the Walker circulation at solar cycle maximum.30926659 · Misios, Stergios, Gray, Lesley J, Knudsen, Mads F et al.2023 · 56 citationsProceedings of the National Academy of Sciences of the United States of America. 2019;116(15):7186-7191
Sounding stellar cycles with Kepler - III. Comparative analysis of chromospheric, photometric and asteroseismic variability1902.02172v2 · C. Karoff, T.S. Metcalfe, B.T. Montet et al.2019 · 12 citationsarXiv
Using Machine Learning Methods to Forecast If Solar Flares Will Be Associated with CMEs and SEPs1806.07117v1 · Fadil Inceoglu, Jacob H. Jeppesen, Peter Kongstad et al.2018 · 49 citationsarXiv
CUBESPEC: Low-cost space-based astronomical spectroscopy1805.11848v2 · Gert Raskin, Tjorven Delabie, Wim De Munter et al.2018 · 7 citationsarXiv
The influence of metallicity on stellar differential rotation and magnetic activity1711.07716v1 · Christoffer Karoff, Travis S. Metcalfe, Angela R. G. Santos et al.2017 · 91 citationsarXiv
First Results From The Hertzsprung Song Telescope: Asteroseismology Of The G5 Subgiant Star {\Mu}Her1701.03365v1 · F. Grundahl, M. Fredslund Andersen, J. Christensen-Dalsgaard et al.2017 · 101 citationsarXiv
Kepler Observations of the Asteroseismic Binary HD 1764651609.09581v1 · T. R. White, O. Benomar, V. Silva Aguirre et al.2016 · 41 citationsA&A 601, A82 (2017)
Chromospheric emission of planet candidate systems - a way to identify false positives1608.07804v2 · Christoffer Karoff, Simon Albrecht, Alfio Bonanno et al.2016 · 1 citationarXiv
Detection of Solar-Like Oscillations, Observational Constraints, and Stellar Models for Cyg, the Brightest Star Observed by the {\it Kepler} Mission1607.01035v1 · J. A. Guzik, G. Houdek, W. J. Chaplin et al.2016 · 22 citationsarXiv
Hot super-Earths stripped by their host stars.27062914 · Lundkvist, M S, Kjeldsen, H, Albrecht, S et al.2016 · 259 citationsNature communications. 2016;7:11201
Observational evidence for enhanced magnetic activity of superflare stars.27009381 · Karoff, Christoffer, Knudsen, Mads Faurschou, De Cat, Peter et al.2016 · 107 citationsNature communications. 2016;7:11058
Spin-orbit alignment of exoplanet systems: ensemble analysis using asteroseismology1601.06052v1 · T. L. Campante, M. N. Lund, J. S. Kuszlewicz et al.2016 · 77 citationsarXiv
Oscillation frequencies for 35 \Kepler solar-type planet-hosting stars using Bayesian techniques and machine learning1511.02105v1 · G. R. Davies, V. Silva Aguirre, T. R. Bedding et al.2015 · 152 citationsarXiv
On the current solar magnetic activity in the light of its behaviour during the Holocene1509.06182v1 · F. Inceoglu, R. Simoniello, M. F. Knudsen et al.2015 · 10 citationsarXiv
LAMOST observations in the Kepler field. Database of low-resolution spectra1508.06391v1 · P. De Cat, J.N. Fu, A.B. Ren et al.2015 · 149 citationsarXiv
Asteroseismology of solar-type stars with K21507.01827v1 · W. J. Chaplin, M. N. Lund, R. Handberg et al.2015 · 41 citationsarXiv
Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology1504.07992v2 · V. Silva Aguirre, G.R. Davies, S. Basu et al.2015 · 402 citationsarXiv
KOI-3158: The oldest known system of terrestrial-size planets1501.07869v1 · T. L. Campante, T. Barclay, J. J. Swift et al.2015 · 1 citationarXiv
An ancient extrasolar system with five sub-Earth-size planets1501.06227v1 · T. L. Campante, T. Barclay, J. J. Swift et al.2015 · 208 citationsarXivon Valency
The lost sunspot cycle: New support from Be10 measurements1412.2931v2 · C. Karoff, F. Inceoglu, M. F. Knudsen et al.2014 · 16 citationsarXiv
Magnetic activity, differential rotation and dynamo action in the pulsating F9IV star KIC 59551221408.3926v1 · A. Bonanno, H.-E. Frohlich, C. Karoff et al.2014 · 10 citationsA&A 569, A113 (2014)
The connection between stellar granulation and oscillation as seen by the Kepler mission1408.0817v1 · T. Kallinger, J. De Ridder, S. Hekker et al.2014 · 278 citationsA&A 570, A41 (2014)
Asteroseismic inference on the spin-orbit misalignment and stellar parameters of HAT-P-71407.7516v1 · Mikkel N. Lund, Mia Lundkvist, Victor Silva Aguirre et al.2014 · 63 citationsA&A 570, A54 (2014)
Kepler-93b: A Terrestrial World Measured to within 120 km, and a Test Case for a New Spitzer Observing Mode1405.3659v1 · Sarah Ballard, William J. Chaplin, David Charbonneau et al.2014 · 66 citationsarXiv
Rotation and magnetism of Kepler pulsating solar-like stars. Towards asteroseismically calibrated age-rotation relations1403.7155v2 · R.A. Garcia, T. Ceillier, D. Salabert et al.2014 · 116 citationsA&A 572, A34 (2014)
Properties of 42 Solar-type Kepler Targets from the Asteroseismic Modeling Portal1402.3614v3 · T.S. Metcalfe, O.L. Creevey, G. Dogan et al.2014 · 164 citationsAstrophys.J.Supp.214:27,2014
Limits on surface gravities of Kepler planet-candidate host stars from non-detection of solar-like oscillations1401.6324v1 · T. L. Campante, W. J. Chaplin, M. N. Lund et al.2014 · 56 citationsarXiv
Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets1401.4195v1 · Geoffrey W. Marcy, Howard Isaacson, Andrew W. Howard et al.2014 · 489 citationsGeoffrey W. Marcy et al. 2014 ApJS 210 20on Valency
Comparison of photometric variability before and after stellar flares1312.0487v1 · C. Karoff2013 · 4 citationsarXiv
Stellar spin-orbit misalignment in a multiplanet system.24136961 · Huber, Daniel, Carter, Joshua A, Barbieri, Mauro et al.2013 · 316 citationsScience (New York, N.Y.). 2013;342(6156):331-4
Asteroseismic fundamental properties of solar-type stars observed by the NASA Kepler Mission1310.4001v2 · W. J. Chaplin, S. Basu, D. Huber et al.2013 · 370 citationsarXiv
Kepler White Paper: Asteroseismology of Solar-Like Oscillators in a 2-Wheel Mission1309.0702v1 · W. J Chaplin, H. Kjeldsen, J. Christensen-Dalsgaard et al.2013 · 1 citationarXiv
Sounding stellar cycles with Kepler - II. Ground-based observations1306.3306v1 · C. Karoff, T. S. Metcalfe, W. J. Chaplin et al.2013 · 56 citationsarXiv
Rotation periods of 12 000 main-sequence Kepler stars: Dependence on stellar spectral type and comparison with v sin i observations1305.5721v3 · M. B. Nielsen, L. Gizon, H. Schunker et al.2013 · 258 citationsarXiv
Observations of intensity fluctuations attributed to granulation and faculae on Sun-like stars from the Kepler mission1302.5563v1 · C. Karoff, T.L. Campante, J. Ballot et al.2013 · 57 citationsarXiv
A sub-Mercury-sized exoplanet.23426260 · Barclay, Thomas, Rowe, Jason F, Lissauer, Jack J et al.2013 · 216 citationsNature. 2013;494(7438):452-4
Asteroseismic determination of obliquities of the exoplanet systems Kepler-50 and Kepler-651302.3728v1 · W. J. Chaplin, R. Sanchis-Ojeda, T. L. Campante et al.2013 · 179 citationsarXiv
Kepler-68: Three Planets, One With a Density Between That of Earth and Ice Giants1302.2596v1 · Ronald L. Gilliland, Geoffrey W. Marcy, Jason F. Rowe et al.2013 · 102 citationsarXiv
Fundamental Properties of Kepler Planet-Candidate Host Stars using Asteroseismology1302.2624v2 · Daniel Huber, William J. Chaplin, J\orgen Christensen-Dalsgaard et al.2013 · 329 citationsarXiv
Characterizing two solar-type Kepler subgiants with asteroseismology: KIC10920273 and KIC113950181211.6650v1 · G. Dogan, T. S. Metcalfe, S. Deheuvels et al.2012 · 29 citationsarXiv
Calibrating Convective properties of Solar-like Stars in the Kepler Field of View1207.2765v1 · Ana Bonaca, Joel D. Tanner, Sarbani Basu et al.2012 · 98 citationsarXiv
Kepler-36: a pair of planets with neighboring orbits and dissimilar densities.22722249 · Carter, Joshua A, Agol, Eric, Chaplin, William J et al.2012 · 388 citationsScience (New York, N.Y.). 2012;337(6094):556-9
Atmospheric parameters of 82 red giants in the Kepler field1205.5642v1 · A. O. Thygesen, S. Frandsen, H. Bruntt et al.2012 · 83 citationsarXiv
Accurate parameters of 93 solar-type Kepler targets1203.0611v1 · H. Bruntt, S. Basu, B. Smalley et al.2012 · 216 citationsarXiv
Career total: 188 works. 96 are in this corpus.Showing the 50 most recent.
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