WB
W. Baumjohann
astro-ph.EPphysics.space-phastro-ph.SRphysics.plasm-phastro-ph.IMphysics.geo-phastro-ph.HEcond-mat.stat-mechphysics.data-anmagnetic reconnection
On Valency
published · living versionsW_qzhza6w2·v1 · currentpublished
CHEOPS: A Transit Photometry Mission for ESA's Small Mission Programme
with C. Broeg, A. Fortier, D. Ehrenreich, Y. Alibert +16
1 version
Preprints & journals
184 papers in the corpus · 2000–2026Searching for hot water world candidates with CHEOPS: II. A low-density super-Earth orbiting the K dwarf TOI-22112610.08922v1 · J. A. Egger, P. Cort'es-Zuleta, D. Kubyshkina et al.2026 · 0 citationsarXiv
CHEOPS photometry from 2024 reveals a reversal in the transit-timing variations of AU Mic c2608.01120v1 · Z. Garai, Gy. M. Szab'o, D. Gandolfi et al.2026 · 0 citationsarXiv
An Ultra-Short Period Super-Earth and a Sub-Neptune Orbiting the K dwarf TOI-43112605.12324v1 · Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrew Collier Cameron et al.2026 · 0 citationsarXiv
The multi-planet system TOI-5624: Four transiting sub-Neptunes with an outer companion revealed by transit-timing variations2604.15035v2 · A. Bonfanti, D. Gandolfi, P. Leonardi et al.2026 · 1 citationA&A 709, A265 (2026)
Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903.41678587 · Wilson, Thomas G, Simpson, Anna M, Collier Cameron, Andrew et al.2026 · 1 citationScience (New York, N.Y.). 2026;392(6795):eadl2348
A study of solar energetic particle transport on 30 March 2022 using multi-spacecraft data assimilation2602.00765v1 · Takashi Minoshima, Yoshizumi Miyoshi, Go Murakami et al.2026 · 1 citationarXiv
HARPS-N, TESS, and CHEOPS discover a transiting sub-Neptune and two outer companions around the bright solar analogue HD 854262511.08473v1 · F. Lienhard, A. Mortier, A. Collier Cameron et al.2025 · 2 citationsarXiv
An Ultra-Short Period Super-Earth and Sub-Neptune Spanning the Radius Valley Orbiting the Kinematic Thick Disk Star TOI-23452510.12783v1 · Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrea Bonfanti et al.2025 · 0 citationsarXiv
Transit Timing Variations in HIP 41378: CHEOPS and TESS confirm a non-transiting sixth planet in the system2509.14156v3 · P. Leonardi, L. Borsato, L. Pagliaro et al.2025 · 3 citationsA&A 702, A211 (2025)
A four-planet system orbiting the old thick disk star TOI-12032509.10136v1 · D. Gandolfi, A. Alnajjarine, L. M. Serrano et al.2025 · 1 citationarXiv
Improved characterization of the TOI-2141 system: a dense sub-Neptune with non-transiting inner and outer companions2509.00762v1 · R. Luque, K. W. F. Lam, J. Cabrera et al.2025 · 0 citationsA&A 704, A174 (2025)
The CHEOPS view of HD 95338b: refined transit parameters, and a search for exomoons2507.15318v1 · Sz. K'alm'an, A. E. Simon, A. Deline et al.2025 · 1 citationA&A 701, A240 (2025)
Detection of lithium in the exosphere of Mercury.40617837 · Schmid, Daniel, Lammer, Helmut, Berezhnoy, Alexey A et al.2025 · 4 citationsNature communications. 2025;16(1):6205
The KELT-7b atmospheric thermal-inversion conundrum revisited with CHEOPS, TESS, and additional data2506.20432v1 · Z. Garai, A. Krenn, P.E. Cubillos et al.2025 · 2 citationsarXiv
Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission2505.01544v2 · A. Deline, P. E. Cubillos, L. Carone et al.2025 · 9 citationsA&A 699, A150 (2025)
Searching for Hot Water World Candidates with CHEOPS: Refining the radii and analysing the internal structures and atmospheric lifetimes of TOI-238 b and TOI-1685 b2502.07887v1 · J. A. Egger, D. Kubyshkina, Y. Alibert et al.2025 · 6 citationsA&A 696, A28 (2025)
Transit-timing variations in the AU Mic system observed with CHEOPS2501.13575v1 · 'A. Boldog, Gy. M. Szab'o, L. Kriskovics et al.2025 · 6 citationsarXiv
BepiColombo cruise science: overview of the mission contribution to heliophysics.40688465 · Sánchez-Cano, Beatriz, Hadid, Lina Z, Aizawa, Sae et al.2025 · 7 citationsEarth, planets, and space : EPS. 2025;77(1):114
CHEOPS observations confirm nodal precession in the WASP-33 system2412.08557v1 · A. M. S. Smith, Sz. Csizmadia, V. Van Grootel et al.2024 · 2 citationsA&A 2025 693 A128
A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS2412.05423v1 · T. Zingales, L. Malavolta, L. Borsato et al.2024 · 3 citationsA&A 695, A273 (2025)
In-situ observations of resident space objects with the CHEOPS space telescope2411.18326v1 · Nicolas Billot, Stephan Hellmich, Willy Benz et al.2024 · 3 citationsJournal of Space Safety Engineering, Volume 11, Issue 3, September 2024, Pages 498-506
A possible misaligned orbit for the young planet AU Mic c2411.16958v2 · H. Yu, Z. Garai, M. Cretignier et al.2024 · 13 citationsarXiv
A close outer companion to the ultra-hot Jupiter TOI-2109 b?2411.07797v1 · J.-V. Harre, A. M. S. Smith, S. C. C. Barros et al.2024 · 10 citationsA&A 692, A254 (2024)
Architecture of TOI-561 planetary system2410.18169v3 · G. Piotto, T. Zingales, L. Borsato et al.2024 · 4 citationsarXiv
The CHEOPS view on the climate of WASP-3 b2409.16268v1 · G. Scandariato, L. Carone, P. E. Cubillos et al.2024 · 3 citationsA&A 692, A129 (2024)
The K2-24 planetary system revisited by CHEOPS2409.02995v3 · V. Nascimbeni, L. Borsato, P. Leonardi et al.2024 · 5 citationsA&A 690, A349 (2024)
TOI-757 b: an eccentric transiting mini-Neptune on a 17.5-d orbit2407.20525v1 · A. Alqasim, N. Grieves, N. M. Ros'ario et al.2024 · 3 citationsarXiv
Characterisation of the Warm-Jupiter TOI-1130 system with CHEOPS and photo-dynamical approach2407.06097v1 · L. Borsato, D. Degen, A. Leleu et al.2024 · 16 citationsA&A 689, A52 (2024)
Unveiling the internal structure and formation history of the three planets transiting HIP 29442 (TOI-469) with CHEOPS2406.18653v1 · J. A. Egger, H. P. Osborn, D. Kubyshkina et al.2024 · 26 citationsA&A 688, A223 (2024)
CHEOPS in-flight performance: A comprehensive look at the first 3.5 years of operations2406.01716v1 · A. Fortier, A.E. Simon, C. Broeg et al.2024 · 1 citationarXiv
HIP 41378 observed by CHEOPS: Where is planet d?2405.20077v1 · S. Sulis, L. Borsato, S. Grouffal et al.2024 · 4 citationsA&A 686, L18 (2024)
Photo-dynamical characterisation of the TOI-178 resonant chain2405.13732v1 · A. Leleu, J.-B. Delisle, L. Delrez et al.2024 · 10 citationsA&A 688, A211 (2024)
Characterisation of the TOI-421 planetary system using CHEOPS, TESS, and archival radial velocity data2404.11074v1 · A. F. Krenn, D. Kubyshkina, L. Fossati et al.2024 · 14 citationsarXiv
Precise characterisation of HD 15337 with CHEOPS: a laboratory for planet formation and evolution2403.16621v1 · N. M. Ros'ario, O. D. S. Demangeon, S. C. C. Barros et al.2024 · 6 citationsA&A 686, A282 (2024)
The tidal deformation and atmosphere of WASP-12b from its phase curve2402.10486v2 · B. Akinsanmi, S. C. C. Barros, M. Lendl et al.2024 · 19 citationsarXiv
Discovery of two warm mini-Neptunes with contrasting densities orbiting the young K3V star TOI-8152401.15709v2 · Angelica Psaridi, Hugh Osborn, Francois Bouchy et al.2024 · 4 citationsarXiv
The EBLM Project XI. Mass, radius and effective temperature measurements for 23 M-dwarf companions to solar-type stars observed with CHEOPS2312.11339v1 · M. I. Swayne, P. F. L. Maxted, A. H. M. J. Triaud et al.2023 · 24 citationsarXiv
Characterising TOI-732 b and c: New insights into the M-dwarf radius and density valley2311.12577v2 · A. Bonfanti, M. Brady, T. G. Wilson et al.2023 · 37 citationsarXiv
CHEOPS observations of KELT-20 b/MASCARA-2 b: An aligned orbit and signs of variability from a reflective dayside2311.03264v2 · V. Singh, G. Scandariato, A. M. S. Smith et al.2023 · 0 citationsarXiv
A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067.38030780 · Luque, R, Osborn, H P, Leleu, A et al.2023 · 64 citationsNature. 2023;623(7989):932-937
No random transits in CHEOPS observations of HD 1391392310.10332v2 · R. Alonso, S. Hoyer, M. Deleuil et al.2023 · 0 citationsA&A 680, A78 (2023)
Constraining the reflective properties of WASP-178b using Cheops photometry2309.09037v1 · I. Pagano, G. Scandariato, V. Singh et al.2023 · 0 citationsarXiv
Refining the properties of the TOI-178 system with CHEOPS and TESS2308.11394v1 · L. Delrez, A. Leleu, A. Brandeker et al.2023 · 12 citationsA&A 678, A200 (2023)
CHEOPS and TESS view of the ultra-short period super-Earth TOI-561 b2308.08687v1 · J. A. Patel, J. A. Egger, T. G. Wilson et al.2023 · 12 citationsA&A 679, A92 (2023)
Investigating the visible phase-curve variability of 55 Cnc e2307.06085v2 · E. A. Meier Vald'es, B. M. Morris, B.-O. Demory et al.2023 · 23 citationsA&A 677, A112 (2023)
TOI-5678 b: A 48-day transiting Neptune-mass planet characterized with CHEOPS and HARPS2306.04295v1 · S. Ulmer-Moll, H. P. Osborn, A. Tuson et al.2023 · 23 citationsarXiv
Two Warm Neptunes transiting HIP 9618 revealed by TESS & Cheops2306.04450v1 · Hugh P. Osborn, Grzegorz Nowak, Guillaume H'ebrard et al.2023 · 23 citationsMNRAS, Vol. 523, 2023, issue 2, pp 3069-3089
Refined parameters of the HD 22946 planetary system and the true orbital period of planet d2306.04468v1 · Z. Garai, H. P. Osborn, D. Gandolfi et al.2023 · 13 citationsA&A 674, A44 (2023)
TESS and CHEOPS Discover Two Warm Sub-Neptunes Transiting the Bright K-dwarf HD 159062306.04511v1 · Amy Tuson, Didier Queloz, Hugh P. Osborn et al.2023 · 13 citationsMNRAS, volume 523, issue 2, pp 3090-3118 (2023)
Entropic Force in MHD, MHD turbulence, and the Entropy-Kinetic Equation2305.08230v1 · W. Baumjohann, R. A. Treumann2023 · 0 citationsarXiv
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