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List of works by Christoffer Karoff

A General Overview for Localizing Short Gamma-Ray Bursts with a CubeSat Mega-Constellation

scientific article published on 12 November 2020

A Multisite Campaign to Measure Solar‐like Oscillations in Procyon. I. Observations, Data Reduction, and Slow Variations ⬇️

scientific article published in the Astrophysical Journal

A continuous ice-core 10 Be record from Mongolian mid-latitudes: Influences of solar variability and local climate

scholarly article by Fadil Inceoglu et al published March 2016 in Earth and Planetary Science Letters

A multi-site campaign to measure solar-like oscillations in procyon. II. Mode frequencies ⬇️

scientific article published in the Astrophysical Journal

A precise asteroseismic age and radius for the evolved sun-like star KIC 11026764 ⬇️

scientific article published in the Astrophysical Journal

A sub-Mercury-sized exoplanet

scientific article

A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler ⬇️

scientific article published in the Astrophysical Journal

AN INTERCOMPARISON PROJECT ON <sup>14</sup>C FROM SINGLE-YEAR TREE RINGS

scientific article published in 2021

Accurate fundamental parameters and detailed abundance patterns from spectroscopy of 93 solar-type Kepler targets

scholarly article

Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology ⬇️

scientific article (publication date: 24 July 2015)

An ancient extrasolar system with five sub-earth-size planets ⬇️

scientific article published in the Astrophysical Journal

Asteroseismic Diagrams from a Survey of Solar-Like Oscillations with KEPLER ⬇️

article

Asteroseismic determination of obliquities of the exoplanet systems Kepler-50 and Kepler-65 ⬇️

scientific article published in the Astrophysical Journal

Asteroseismic fundamental properties of solar-type stars observed by the NASA Kepler mission

scientific article

Asteroseismic inference on the spin-orbit misalignment and stellar parameters of HAT-P-7 ⬇️

scientific article published in Astronomy and Astrophysics

Asteroseismic stellar activity relations ⬇️

scientific article published in Astronomy and Astrophysics

Asteroseismology from multi-month Kepler photometry: the evolved Sun-like stars KIC 10273246 and KIC 10920273

scientific article published in Astronomy and Astrophysics

Asteroseismology of Solar-Type Stars withK2: Detection of Oscillations in C1 Data ⬇️

scientific article

Asteroseismology of solar-type stars with Kepler I: Data analysis

Asteroseismology of solar-type stars with Kepler: II. Stellar modeling

article published in 2010

Asteroseismology of solar-type stars with Kepler: III. Ground-based data

Asteroseismology of the Solar Analogs 16 Cyg A and B from KEPLER Observations ⬇️

scholarly article

Atmospheric parameters of 82 red giants in theKeplerfield

scientific article published in Astronomy and Astrophysics

BATCH PROCESSING OF TREE-RING SAMPLES FOR RADIOCARBON ANALYSIS

scientific article published in 2020

Calibrating convective properties of solar-like stars in the Kepler field of view ⬇️

article

Can beating between different dynamo modes explain multiple magnetic cycles in solar - type stars

Characterization of COROT Target Fields with BEST: Identification of Periodic Variable Stars in the IR01 Field

scientific article published in Astronomical Journal

Characterization of CoRoT target fields with the berlin exoplanet search telescope: identification of periodic variable stars in the LRa1 field

scientific article published in Astronomical Journal

Characterizing two solar-type Kepler subgiants with asteroseismology: KIC 10920273 and KIC 11395018 ⬇️

scientific article published in the Astrophysical Journal

Christian Horrebow’s Sunspot Observations – I. Life and Published Writings

scholarly article

Chromosomes emission of planet candidate host stars: a way to identify false positives ⬇️

scientific article

Comparison of photometric variability before and after stellar flares ⬇️

scientific article published in January 2014

Constructing a one-solar-mass evolutionary sequence using asteroseismic data from Kepler ⬇️

scholarly article

Corrigendum to “A continuous ice-core 10 Be record from Mongolian mid-latitudes: Influences of solar variability and local climate” [Earth Planet. Sci. Lett. 437 (2016) 47–56]

scholarly article by Fadil Inceoglu et al published May 2016 in Earth and Planetary Science Letters

Cosmic ray event in 994 C.E. recorded in radiocarbon from Danish oak

scholarly article

Decline in Etesian winds after large volcanic eruptions in the last millennium

scientific article published in 2022

Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819 ⬇️

article

Detection of solar-like oscillations, observational constraints, and stellar models for {theta} Cyg, the brightest star observed by the Kepler mission ⬇️

scientific article published in the Astrophysical Journal

Ensemble asteroseismology of solar-type stars with the NASA Kepler mission.

scientific article

Erratum: A sub-Mercury-sized exoplanet

scientific article published in Nature

Erratum: Sounding stellar cycles with Kepler – II. Ground-based observations

scholarly article published in Monthly Notices of the Royal Astronomical Society

Evidence for the impact of stellar activity on the detectability of solar-like oscillations observed by Kepler ⬇️

article

Evidence that solar flares drive global oscillations in the Sun ⬇️

First Results from the Hertzsprung SONG Telescope: Asteroseismology of the G5 Subgiant Star μHerculis ⬇️

scientific article published in the Astrophysical Journal

Fundamental properties of Kepler planet-candidate host stars using asteroseismology ⬇️

scientific article published in the Astrophysical Journal

Fundamental properties of five Kepler stars using global asteroseismic quantities and ground-based observations

scientific article published in Astronomy and Astrophysics

GRB060130: further R-band imaging

scientific article published in January 2006

GRB060130: optical imaging

scientific article published in January 2006

Global asteroseismic properties of solar-like oscillations observed by Kepler: a comparison of complementary analysis methods

article

Grand solar minima and maxima deduced from10Be and14C: magnetic dynamo configuration and polarity reversal

scientific article published in Astronomy and Astrophysics

HAYDN

scientific article published on 26 March 2021

Hemispheric progression of solar cycles in solar magnetic field data and its relation to the solar dynamo models

scientific article published in January 2017

High-frequency modes in solar-like stars

scientific article published in January 2007

Hot super-Earths stripped by their host stars ⬇️

scientific article published on 11 April 2016

Identification of variable stars in COROT's first main observing field (LRc1)

scholarly article

Is one month of observations enough? A case study on Kepler-21

scientific article published in January 2012

KEPLER-21b: A 1.6R Earth PLANET TRANSITING THE BRIGHT OSCILLATING F SUBGIANT STAR HD 179070 ⬇️

scientific article published in the Astrophysical Journal

KEPLER-93b: A TERRESTRIAL WORLD MEASURED TO WITHIN 120 km, AND A TEST CASE FOR A NEW SPITZER OBSERVING MODE ⬇️

scientific article published in the Astrophysical Journal

KOI-3158: The oldest known system of terrestrial-size planets ⬇️

Kepler observations of the asteroseismic binary HD 176465

scientific article published in Astronomy and Astrophysics

Kepler-22b: A 2.4 EARTH-RADIUS PLANET IN THE HABITABLE ZONE OF A SUN-LIKE STAR ⬇️

scientific article published in the Astrophysical Journal

Kepler-432: a red giant interacting with one of its two long-period giant planets ⬇️

scientific article published in the Astrophysical Journal

Kepler-68: three planets, one with a density between that of earth and ice giants ⬇️

scientific article published in the Astrophysical Journal

LAMOST observations in the Kepler field. I. Database of low-resolution spectra ⬇️

scientific article published in January 2015

Limits on surface gravities of Kepler planet-candidate host stars from non-detection of solar-like oscillations ⬇️

scientific article published in the Astrophysical Journal

Magnetic activity, differential rotation, and dynamo action in the pulsating F9IV star KIC 5955122 ⬇️

scientific article published in Astronomy and Astrophysics

Masses, radii, and orbits of small Kepler planets: the transition from gaseous to rocky planets ⬇️

article

Mode lifetimes of stellar oscillations. Implications for asteroseismology

scientific article published in Astronomy and Astrophysics

Modeling Kepler observations of solar-like oscillations in the red giant star HD 186355 ⬇️

scientific article published in the Astrophysical Journal

Modeling the Relationship Between Neutron Counting Rates and Sunspot Numbers Using the Hysteresis Effect

article

Modelling the autocovariance of the power spectrum of a solar-type oscillator

scientific article

New Single-Year Radiocarbon Measurements Based on Danish oak Covering the Periods AD 692–790 and 966–1057 ⬇️

scholarly article

Observational evidence for enhanced magnetic activity of superflare stars.

scientific article

Observations of intensity fluctuations attributed to granulation and faculae on sun-like stars from the Kepler mission ⬇️

scientific article published in the Astrophysical Journal

On the Current Solar Magnetic Activity in the Light of Its Behaviour During the Holocene ⬇️

Oscillation frequencies for 35 KEPLER solar-type planet-hosting stars using Bayesian techniques and machine learning ⬇️

scientific article (publication date: 30 December 2015)

Oscillations in Procyon A: First results from a multi-site campaign

Predicting the detectability of oscillations in solar-type stars observed by Kepler ⬇️

scientific article published in the Astrophysical Journal

Preparation of Kepler light curves for asteroseismic analyses

scientific article

Properties of 42 solar-type Kepler targets from the asteroseismic modeling portal ⬇️

scholarly article

Reconstruction of Subdecadal Changes in Sunspot Numbers Based on the NGRIP 10Be Record

Rotation and magnetism of Kepler pulsating solar-like stars ⬇️

scientific article published in Astronomy and Astrophysics

Rotation periods of 12000 main-sequence Kepler stars: dependence on stellar spectral type and comparison with v sin i observations

scientific article published in January 2013

SPB stars in the open SMC cluster NGC 371

scholarly article

Slowdown of the Walker circulation at solar cycle maximum

scientific article published on 29 March 2019

Solar variability between 650 CE and 1900 - Novel insights from a global compilation of new and existing high-resolution 14C records

scientific article published in 2022

Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data ⬇️

scientific article published in the Astrophysical Journal

Solar-like oscillations in cluster stars

scientific article

Solar-like oscillations in low-luminosity red giants: first results from Kepler ⬇️

article by Tim Bedding et al published 31 March 2010 in Letters of the Astrophysical Journal

Solar-like oscillations in the G8 V star τ Ceti

scientific article published in Astronomy and Astrophysics

Solar‐like Oscillations in the G2 Subgiant β Hydri from Dual‐Site Observations ⬇️

scientific article published in the Astrophysical Journal

Sounding stellar cycles with Kepler - I. Strategy for selecting targets

scientific article

Sounding stellar cycles with Kepler – II. Ground-based observations

scientific article

Sounding stellar cycles with Kepler – III. Comparative analysis of chromospheric, photometric, and asteroseismic variability

scientific article

Sounding stellar cycles with Kepler – preliminary results from ground-based chromospheric activity measurements

Spin-orbit alignment of exoplanet systems: ensemble analysis using asteroseismology ⬇️

scientific article published in the Astrophysical Journal

Starspot simulations forKepler

scientific article published in December 2012

Stellar spin-orbit misalignment in a multiplanet system

scientific article

Temporal variations in the acoustic signal from faculae

scientific article published in January 2012

The Amplitude of Solar Oscillations Using Stellar Techniques ⬇️

scientific article published in the Astrophysical Journal

The Influence of Metallicity on Stellar Differential Rotation and Magnetic Activity

scientific article published in the Astrophysical Journal

The asteroseismic potential of Kepler: first results for solar-type stars ⬇️

The connection between stellar granulation and oscillation as seen by theKeplermission ⬇️

scientific article published in Astronomy and Astrophysics

The lost sunspot cycle: New support from10Be measurements ⬇️

scientific article published in Astronomy and Astrophysics

The solar-like CoRoT target HD 170987: spectroscopic and seismic observations

scientific article published in Astronomy and Astrophysics

Using machine learning methods to forecast if solar flares will be associated with CMEs and SEPs ⬇️

scholarly article by Inceoglu F. et al published 2018 in Letters of the Astrophysical Journal

Variations of the amplitudes of oscillation of the Be star Achernar

scientific article

Verification of the Kepler input catalog from asteroseismology of solar-type stars ⬇️

scholarly article

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