📊 DATA SCIENCE
Writing
- Duo Trust Monitor Is Here to Make Risk Detection Easy
This article announced the availability of Duo Trust Monitor. Duo Trust Monitor (DTM) is a feature integrated in the Duo Platform that uses a variety of ML models to provide a simple, easy to enable, high signal source of risky access behavior to our customers. A demo of Duo Trust Monitor is available. - Finding a Needle in a Haystack using Apache Spark
An interactive workshop for Duo engineers that taught how to use a Jupyter Notebook and introduced Apache SparkSQL, applied to simple outlier detection. - Debugging Apache Spark Pipelines
A collection of common tuning steps for Apache Spark.
Presentations
Duo
- Where We’re Going, We Don’t Need Labels: Anomaly Detection for 2FA (DEFCON AI Village 29, 2021)
slides, recording - Avoid Data Pitfalls in Your Threat Intelligence (Duo Webinar, 2020)
recording - Detecting and Preventing Cybersecurity Threats Using Machine Learning (Domino Popup Data Science, Austin, 2018)
slides, recording
🪐 ASTRONOMY
Research
First author
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The potential impact of groove modes on Type II planetary migration, S Meschiari, G Laughlin, The Astrophysical Journal Letters, 2008.
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Systemic: a testbed for characterizing the detection of extrasolar planets. I. The systemic console package, S Meschiari, AS Wolf, E Rivera, G Laughlin, S Vogt, P Butler, Publications of the Astronomical Society of the Pacific, 2009.
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Systemic: a testbed for characterizing the detection of extrasolar planets. II. Numerical approaches to the transit timing inverse problem, S Meschiari, GP Laughlin, The Astrophysical Journal, 2010.
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The Lick-Carnegie survey: Four new exoplanet candidates, S Meschiari, G Laughlin, SS Vogt, RP Butler, EJ Rivera, N Haghighipour, et al., The Astrophysical Journal, 2011.
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Circumbinary planet formation in the Kepler-16 system. I. N-body simulations, S Meschiari, The Astrophysical Journal, 2012.
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Planet formation in circumbinary configurations: turbulence inhibits planetesimal accretion, S Meschiari, The Astrophysical Journal Letters, 2012.
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Circumbinary planet formation in the Kepler-16 system. II. A toy model for in situ planet formation within a debris belt, S Meschiari, The Astrophysical Journal, 2014.
Collaborations
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Rapid heating of the atmosphere of an extrasolar planet, G Laughlin, D Deming, J Langton, D Kasen, S Vogt, P Butler, E Rivera, S Meschiari, et al., Nature, 2009.
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A super-Earth and two Neptunes orbiting the nearby Sun-like star 61 Virginis, SS Vogt, RA Wittenmyer, RP Butler, S O’Toole, GW Henry, EJ Rivera, S Meschiari, et al., The Astrophysical Journal, 2009.
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A super-Earth orbiting the nearby Sun-like star HD 1461, EJ Rivera, RP Butler, SS Vogt, G Laughlin, GW Henry, S Meschiari, The Astrophysical Journal, 2009.
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A Quasi-stationary Solution to Gliese 436b’s Eccentricity, K Batygin, G Laughlin, S Meschiari, E Rivera, S Vogt, P Butler, The Astrophysical Journal, 2009.
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The Lick-Carnegie Exoplanet Survey: a Uranus-mass fourth planet for GJ 876 in an extrasolar Laplace configuration, EJ Rivera, G Laughlin, RP Butler, SS Vogt, N Haghighipour, S Meschiari, The Astrophysical Journal, 2010.
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A long-period planet orbiting a nearby Sun-like star, HRA Jones, RP Butler, CG Tinney, S O’Toole, R Wittenmyer, GW Henry, S Meschiari, et al., Monthly Notices of the Royal Astronomical Society, 2010.
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The Lick-Carnegie Exoplanet Survey: a Saturn-mass planet in the habitable zone of the nearby M4V star HIP 57050, N Haghighipour, SS Vogt, RP Butler, EJ Rivera, G Laughlin, S Meschiari, et al., The Astrophysical Journal, 2010.
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Variability at the Edge: Optical near/IR Rapid-Cadence Monitoring of Newly Outbursting FU Orionis Object HBC 722, JD Green, P Robertson, G Baek, D Pooley, S Pak, M Im, JE Lee, Y Jeon, S Meschiari, et al., The Astrophysical Journal, 2013.
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The Lick-Carnegie exoplanet survey: Gliese 687 b—A Neptune-mass planet orbiting a nearby red dwarf, J Burt, SS Vogt, RP Butler, R Hanson, S Meschiari, EJ Rivera, GW Henry, et al., The Astrophysical Journal, 2014.
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A four-planet system orbiting the K0V star HD 141399, SS Vogt, RP Butler, EJ Rivera, R Kibrick, J Burt, R Hanson, S Meschiari, et al., The Astrophysical Journal, 2014.
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Six planets orbiting HD 219134, SS Vogt, J Burt, S Meschiari, RP Butler, GW Henry, S Wang, B Holden, et al., The Astrophysical Journal, 2015.
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The Lick-Carnegie Exoplanet Survey: HD 32963—A New Jupiter Analog Orbiting a Sun-like Star, D Rowan, S Meschiari, G Laughlin, SS Vogt, RP Butler, J Burt, S Wang, et al., The Astrophysical Journal, 2016.
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Two new long-period giant planets from the McDonald Observatory planet search and two stars with long-period radial velocity signals related to stellar activity cycles, M Endl, EJ Brugamyer, WD Cochran, PJ MacQueen, P Robertson, S Meschiari, et al., The Astrophysical Journal, 2016.
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A 12-year activity cycle for the nearby planet host star HD 219134, MC Johnson, M Endl, WD Cochran, S Meschiari, P Robertson, et al., The Astrophysical Journal, 2016.
Outreach
Presentations
Articles
These are articles I wrote for the general public.
- Rarity of Jupiter-like planets means planetary systems exactly like ours may be scarce – The Conversation, December 2015, republished on Space.com
- Creating Online Apps for Outreach and Education – AstroBetter, July 2014
- Telescope apps help amateurs hunt for exoplanets – The Conversation, UK, republished on Scientific American, Apr. 2014
- Star Wars planets migrate into position around stellar pairs – The Conversation, UK, republished on Scientific American, Ars Technica, and The New Statesman, Feb. 2014
- Growing planets around binary stars – Guest post on Planet Hunters blog, Nov. 2012
Press releases, media and interviews
These are articles that featured my work, or that I provided quotes for.
- Take Five: Stefano Meschiari, Creator of SuperPlanetCrash Cogito, July 2014
- Super Planet Crash’ Game Is Like An Astronomer’s Version Of ‘Angry Birds Huffington Post, Apr. 2014
- Build (and Destroy) Your Own Solar System with This Awesome Exoplanet Game VICE Motherboard, Apr. 2014
- Play this: ‘Super Planet Crash’ tests your god mode The Verge, Apr. 2014
- Forget Candy Crush — Super Planet Crash makes you a god GlobalNews, Apr. 2014
- Super Planet Crash, la gravità è un gioco with video segment on INAF-TV, INAF, Apr. 2014
- Internet Game “Super Planet Crash” Lets You, Well, Simulate Planet Collisions The Creators Project, Apr. 2014
- Super Planet Crash Kottke.org, Apr. 2014
- A Game That Lets You Build — Or Destroy — Your Own Solar System io9, Apr. 2014
- Orbital physics is child’s play with ‘Super Planet Crash’ UC Santa Cruz press release, Apr. 2014
- Texas, California Astronomers Release New Game ‘Super Planet Crash’ McDonald Observatory press release, April 2014
- Lick’s Automated Planet Finder: First robotic telescope for planet hunters UC Santa Cruz press release, March 2014
- How Did Tatooine Form? Astrobites, Oct. 2013
- A Tatooine Family Sky and Telescopes, Aug. 2012
- New planet discoveries suggest low-mass planets are common around nearby stars UC Santa Cruz press release, Dec. 2009
- Astronomers get a sizzling weather report from a distant planet UC Santa Cruz press release, Jan. 2009
- Planet hunters wanted to help astronomers in the search for new worlds UC Santa Cruz press release, Oct. 2006