RCN Colloquia are generally scheduled for the 4th (sometimes 5th) Thursday of the month at 8a Pacific Time. If the speaker agrees, recordings are posted to our YouTube Channel and listed below for those unable to join in real time.

Fall 2026 / Winter 2027 EPRV Colloquium Schedule Coming Soon

Use this Google Form to nominate a speaker for a future EPRV colloquium!

For a list of all previous RCN Colloquia speakers and topics, see this speaker archive document.

Recordings of Past RCN Colloquia

Browse the archive below and open talks on YouTube. Newer recordings appear first.

• June 2026
  Tracing spectral signatures of stellar granulation and magnetic activity using 3D MHD simulations
  Sowmya Krishnamurthy [University of Graz]
  Watch on YouTube
• May 2026
  Chasing stellar noise with PoET: lessons from the first month of observations
  Nuno Santos [University of Porto]
  Watch on YouTube
• April 2026
  Back to the basics: using statistical linear models to clean radial velocities for exoplanet detection
  Jessi Cisewski-Kehe [University of Wisconsin-Madison]
  Watch on YouTube
• March 2026
  Magnetic Activity Diagnostics with LOST using the He I D3 Line
  Momo Ellwarth [Lowell Observatory]
  Watch on YouTube
• January 2026
  Search and Characterize Earth-like Planets with Chorus
  Sharon Wang [Tsinghua University]
  Watch on YouTube
• November 2025
  Know thy star: an introduction to stellar spectroscopy in the context of EPRV
  Cis Lagae [University of Warwick]
  Watch on YouTube
• October 2025
  Wavelength Calibration of EPRV Spectrographs
  Francesco Pepe [University of Geneva]
  Watch on YouTube
• September 2025
  NIRPS, lessons learnt and path forward in Infrared PRV
  Étienne Artigau & Neil Cook [University of Montreal]
  Watch on YouTube
• August 2025
  Red Jewels: the Challenges and Rewards of EPRV Studies of M dwarfs
  Paul Robertson [UC Irvine]
  Watch on YouTube
• May 2025 Part II
  A homogenous analysis of small planet masses
  Hannah Osborne [UCL]
  Watch on YouTube
• May 2025 Part I
  gaspery: Optimized Scheduling of Radial Velocity Follow-Up Observations for Active Host Stars
  Chris Lam [University of Florida]
  Watch on YouTube
• April 2025
  Granulation: Study on a Quiet K-Dwarf HD 166620
  Ancy Anna John [University of Birmingham]
  Watch on YouTube
• March 2025
  Status of HARPS3 and the Terra Hunting Experiment
  Samantha Thompson [University of Cambridge]
  Watch on YouTube
• February 2025
  Modeling stellar activity in the wavelength domain: data-driven and physically-motivated approaches
  Baptiste Klein [University of Oxford]
  Watch on YouTube
• September 2024
  Forward Modeling Telluric Absorption with a Variable Line Spread Function using NEID and HPF
  Danny Krolikowski [University of Arizona]
  Watch on YouTube
• August 2024
  BANZAI-NRES: A modular pipeline framework to measure radial velocities
  Curtis McCully [Las Cumbres Observatory]
  Watch on YouTube
• May 2024
  Exploring planetary system architecture with Gaia astrometry and (EP)RVs
  Jean-Baptiste Delisle [University of Geneva]
  Watch on YouTube
• April 2024
  Line-by-line radial velocities for the Sun-as-a-star
  Drake Deming [University of Maryland at College Park]
  Watch on YouTube
• February 2024
  Exploring the impact of stellar variability on high resolution spectroscopy through observations and simulations
  Heather Cegla [University of Warwick]
  Watch on YouTube
• January 2024
  Views on how to reach the 10 cm/s precision level in RV
  Xavier Dumusque [University of Geneva]
  Watch on YouTube
• November 2023
  Detector Characterization in the era of EPRV
  Joe Tufts [Semiconductor Technology Associates, Inc.] & Ashley Baker [CalTech]
  Watch on YouTube
• October 2023
  Stellar Variability in Isolation: Characterizing Resolved Stellar Signals in EPRV Timeseries
  Jacob Luhn [UC Irvine]
  Watch on YouTube
• September 2023
  Physically motivated stellar activity mitigation
  Jared Siegel [Princeton University]
  Watch on YouTube
• August 2023
  Asteroseismology in the era of EPRV instruments
  Dan Huber [University of Hawaii / University of Sydney]
  Watch on YouTube
• June 2023
  Solar Heterodyne Spectroscopy with Frequency Combs
  Connor Fredrick [NIST & CU Boulder]
  Watch on YouTube
• May 2023
  Data-Driven Methods for Achieving Extreme Precision Radial Velocities
  Megan Bedell [Center for Computational Astrophysics, Flatiron Institute]
  Watch on YouTube
• April 2023
  Data-Driven Modeling of Telluric Features and Stellar Variability with StellarSpectraObservationFitting.jl
  Christian Gilbertson [Penn State University]
  Watch on YouTube
• February 2023
  Effects of Magnetic Intensification on Stellar RVs
  Steve Saar [CfA / SAO]
  Watch on YouTube
• December 2022
  Statistical methods for radial velocity data analysis
  Nathan Hara [University of Geneva]
  Watch on YouTube
• October 2022
  Observing the Sun to learn about the stars
  Annelies Mortier [University of Birmingham]
  Watch on YouTube
• September 2022
  Impact of stellar variability on future Earth-like planets detectability
  Nadege Meunier [Institut de planétologie et d'astrophysique de Grenoble]
  Watch on YouTube
• August 2022
  Line-by-line RVs: A promising solution to the EPRV
  Michaël Cretignier [University of Geneva]
  Watch on YouTube
• July 2022
  Instrumental Challenges in the EPRV Era -- the Path Towards 10 cm/s
  Sam Halverson [JPL]
  Watch on YouTube
• June 2022
  Towards nearby Exo-Earths by way of Young Neptunes: Data-drived stellar activity models for radial velocity planet searches
  Suzanne Aigrain [Oxford University]
  Watch on YouTube
• May 2022
  The EXPRES Stellar Signals Project: Establishing the State of the Field in Disentangling Photospheric Velocities
  Lily Zhao [Center for Computational Astrophysics]
  Watch on YouTube