RK
Ravi Kopparapu
astro-ph.EPastro-ph.IMphysics.pop-phgr-qcastro-ph.SRphysics.ao-phastro-ph.HEastro-phastro-ph.COphysics.geo-ph
On Valency
published · living versionsW_qwrjy4dk·v1 · currentpublished
Nitrogen Dioxide Pollution as a Signature of Extraterrestrial Technology
with Giada Arney, Jacob Haqq-Misra, Jacob Lustig-Yaeger, Geronimo Villanueva
1 version
W_fb5cjfkg·v1published
W_3wpy4s8w·v1published
W_kz4npcv8·v1published
W_h57s4av3·v1published
W_pymww8fp·v1published
Preprints & journals
114 papers in the corpus · 2006–2026Atmospheric Escape Rates from Mars - If it Orbited an Old M-Dwarf Star2603.11561v1 · David A. Brain, Ofer Cohen, Thomas E. Cravens et al.2026 · 1 citationarXiv
Habitable Worlds Observatory (HWO): Living Worlds Community Working Group: The Search for Life on Potentially Habitable Exoplanets2601.09766v1 · Giada Arney, Niki Parenteau, Natalie Hinkel et al.2026 · 0 citationsarXiv
NASA Decadal Astrobiology Research and Exploration Strategy (NASA-DARES 2025) White Paper -- Habitable Worlds Observatory Living Worlds Science Cases: Research Gaps and Needs2601.06386v1 · Niki Parenteau, Giada Arney, Eleanora Alei et al.2026 · 1 citationarXiv
Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets2511.20329v2 · Jacob Haqq-Misra, Ravi Kopparapu, George Profitiliotis2025 · 2 citationsThe Astrophysical Journal Letters (2025) 995: L22
Are We There Yet? Challenges in Quantifying the Frequency of Earth Analogs in the Habitable Zone2511.05660v1 · Rachel B. Fernandes, Samson Johnson, Galen J. Bergsten et al.2025 · 4 citationsarXiv
Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging2510.19956v1 · Corey Beard, Paul Robertson, Jack Lubin et al.2025 · 2 citationsarXiv
Chemistry, Climate, and Transmission Spectra of TRAPPIST-1 e Explored with a Multimodel Sparse Sampled Ensemble2510.18704v1 · Eric T. Wolf, Edward W. Schwieterman, Jacob Haqq-Misra et al.2025 · 0 citationsPlanet. Sci. J. 6 231, 2025
K2-18b Does Not Meet The Standards of Evidence For Life2508.05961v2 · Kevin B. Stevenson, Jacob Lustig-Yaeger, E. M. May et al.2025 · 11 citationsarXiv
From Global Climate Models (GCMs) to Exoplanet Spectra with the Global Emission Spectra (GlobES)2507.09048v1 · Thomas J. Fauchez, Geronimo L. Villanueva, Vincent Kofman et al.2025 · 4 citationsPublished in Astronomy and Computing Volume 53, October 2025, 100982
Strong link between Earth's oxygen level and geomagnetic dipole revealed since the last 540 million years.40512863 · Kuang, Weijia, Kopparapu, Ravi, Krissansen-Totton, Joshua et al.2025 · 6 citationsScience advances. 2025;11(24):eadu8826
The climates and thermal emission spectra of prime nearby temperate rocky exoplanet targets2504.00978v2 · Tobi Hammond, Thaddeus D. Komacek, Ravi K. Kopparapu et al.2025 · 1 citationHammond et al 2025 ApJ 984 181
Earth as an Exoplanet: Investigating the effects of cloud variability on the direct-imaging of atmospheres2503.09136v1 · Soumil Kelkar, Prabal Saxena, Ravi Kopparapu et al.2025 · 4 citationsarXiv
Earth Detecting Earth: At what distance could Earth's constellation of technosignatures be detected with present-day technology?2502.02614v1 · Sofia Z. Sheikh, Macy J. Huston, Pinchen Fan et al.2025 · 10 citationsAJ 169 118 (2025)
Polycyclic Aromatic Hydrocarbons (PAHs) as an Extraterrestrial Atmospheric Technosignature2501.06462v1 · Dwaipayan Dubey, Ravi Kopparapu, Barbara Ercolano et al.2025 · 3 citationsarXiv
Potential Interior Structures and Habitability of Super-Earth Exoplanets LHS 1140 b, K2-18 b, TOI-1452 b and TOI-1468 c2412.08476v1 · Mangesh Daspute, Amri Wandel, Ravi Kumar Kopparapu et al.2024 · 8 citationsarXiv
Projections of Earth's technosphere: Scenario modeling, worldbuilding, and overview of remotely detectable technosignatures2409.00067v3 · Jacob Haqq-Misra, George Profitiliotis, Ravi Kopparapu2024 · 8 citationsTechnological Forecasting and Social Change (2025) 218: 124194
The challenge of detecting remote spectroscopic signatures from radionuclides2408.04467v1 · Jacob Haqq-Misra, Vincent Kofman, Ravi K. Kopparapu2024 · 1 citationApJ (2024) 973: 161
Interpolation and synthesis of sparse samples in exoplanet atmospheric modeling2405.14693v1 · Jacob Haqq-Misra, Eric T. Wolf, Thomas J. Fauchez et al.2024 · 2 citationsPSJ (2024) 5: 140
Artificial Greenhouse Gases as Exoplanet Technosignatures2405.11149v2 · Edward W. Schwieterman, Thomas J. Fauchez, Jacob Haqq-Misra et al.2024 · 3 citationsApJ, 969, 20 (2024)
Detectability of Solar Panels as a Technosignature2405.04560v1 · Ravi Kopparapu, Vincent Kofman, Jacob Haqq-Misra et al.2024 · 2 citationsarXiv
Inner Edge Habitable Zone Limits Around Main Sequence Stars: Cloudy Estimates2401.12204v1 · James D. Windsor, Tyler D. Robinson, Ravi kumar Kopparapu et al.2024 · 0 citationsarXiv
The Prospect of Detecting Volcanic Signatures on an ExoEarth Using Direct Imaging2309.15972v1 · Colby M. Ostberg, Scott D. Guzewich, Stephen R. Kane et al.2023 · 11 citationsarXiv
RoSETZ: Roman Survey of the Earth Transit Zone -- a SETI-optimized survey for habitable-zone exoplanets2306.10202v1 · Eamonn Kerins, Supachai Awiphan, Kathryn Edmondson et al.2023 · 0 citationsarXiv
Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-20952304.09189v1 · Elisa V. Quintana, Emily A. Gilbert, Thomas Barclay et al.2023 · 1 citationarXiv
Sporadic Spin-Orbit Variations in Compact Multi-planet Systems and their Influence on Exoplanet Climate2302.11561v1 · Howard Chen, Gongjie Li, Adiv Paradise et al.2023 · 20 citationsarXiv
Absence of extended atmospheres in low-mass star radius-gap planets GJ 9827 b, GJ 9827 d and TOI-1235 b2302.01479v2 · Vigneshwaran Krishnamurthy, Teruyuki Hirano, Eric Gaidos et al.2023 · 13 citationsarXiv
The transmission spectrum of the potentially rocky planet L 98-59 c2301.10866v2 · Thomas Barclay, Kyle B. Sheppard, Natasha Latouf et al.2023 · 8 citationsarXiv
The CARMENES search for exoplanets around M dwarfs, Wolf 1069 b: Earth-mass planet in the habitable zone of a nearby, very low-mass star2301.02477v2 · D. Kossakowski, M. Kurster, T. Trifonov et al.2023 · 33 citationsA&A 670, A84 (2023)
Community Report from the Biosignatures Standards of Evidence Workshop2210.14293v2 · Victoria Meadows, Heather Graham (NASA-GFCS), Victor Abrahamsson (JPL NASA) et al.2022 · 14 citationsarXiv
A Radiative-Convective Model for Terrestrial Planets with Self-Consistent Patchy Clouds2210.10004v1 · James D. Windsor, Tyler D. Robinson, Ravi kumar Kopparapu et al.2022 · 12 citationsarXiv
A transmission spectrum of the sub-Earth planet L98-59~b in 1.1-1.7 m2210.10008v1 · Mario Damiano, Renyu Hu, Thomas Barclay et al.2022 · 25 citationsarXiv
A Catalog of Habitable Zone Exoplanets2210.02484v2 · Michelle L. Hill, Kimberly Bott, Paul A. Dalba et al.2022 · 77 citationsarXiv
The Sparse Atmospheric MOdel Sampling Analysis (SAMOSA) intercomparison: Motivations and protocol version 1.0. A CUISINES model intercomparison project2209.10480v1 · Jacob Haqq-Misra, Eric T. Wolf, Thomas J. Fauchez et al.2022 · 13 citationsPSJ (2022) 3: 260
Opportunities for Technosignature Science in the Planetary Science and Astrobiology Decadal Survey2209.11685v1 · Jacob Haqq-Misra, Reza Ashtari, James Benford et al.2022 · 4 citationsarXiv
The K2-3 system revisited: testing photoevaporation and core-powered mass loss with three small planets spanning the radius valley2207.12755v2 · Hannah Diamond-Lowe, Laura Kreidberg, C. E. Harman et al.2022 · 35 citationsarXiv
Searching for technosignatures in exoplanetary systems with current and future missions2206.00030v1 · Jacob Haqq-Misra, Edward W. Schwieterman, Hector Socas-Navarro et al.2022 · 0 citationsActa Astronautica (2022) 198: 194-207
The Outer Edge of the Venus Zone Around Main-Sequence Stars2204.10919v1 · Monica R. Vidaurri, Sandra T. Bastelberger, Eric T. Wolf et al.2022 · 8 citationsarXiv
Disruption of a Planetary Nitrogen Cycle as Evidence of Extraterrestrial Agriculture2204.05360v1 · Jacob Haqq-Misra, Thomas J. Fauchez, Edward W. Schwieterman et al.2022 · 15 citationsApJL (2022) 929: L28
The Case for Technosignatures: Why They May Be Abundant, Long-lived, Highly Detectable, and Unambiguous2203.10899v1 · Jason T. Wright, Jacob Haqq-Misra, Adam Frank et al.2022 · 54 citations2022 ApJL 927 L30on Valency
Opportunities for Technosignature Science in the Astro2020 Report2203.08968v1 · Jacob Haqq-Misra, Sofia Sheikh, Manasvi Lingam et al.2022 · 1 citationarXiv
The Habitable Zones of Rapidly Rotating Main Sequence A/F Stars2202.06918v1 · John P. Ahlers, Emeline F. Fromont, Ravi Kopparappu et al.2022 · 7 citationsarXiv
Detectability of Chlorofluorocarbons in the Atmospheres of Habitable M-dwarf Planets2202.05858v1 · Jacob Haqq-Misra, Ravi Kopparapu, Thomas J. Fauchez et al.2022 · 29 citationsPlanet. Sci. J. (2022) 3: 60
ExoCAM: A 3D Climate Model for Exoplanet Atmospheres2201.09797v1 · Eric Wolf, Ravi Kopparapu, Jacob Haqq-Misra et al.2022 · 67 citationsarXiv
Final Report for SAG 22: A Target Star Archive for Exoplanet Science2112.04517v1 · Natalie R. Hinkel, Joshua Pepper, Christopher C. Stark et al.2021 · 0 citationsarXiv
A hot Mars-sized exoplanet transiting an M dwarf2112.03958v1 · Caleb I. Canas, Suvrath Mahadevan, William D. Cochran et al.2021 · 10 citationsAJ, 163, 3 (2022)
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part I: Dry Cases -- The fellowship of the GCMs2109.11457v2 · Martin Turbet, Thomas J. Fauchez, Denis E. Sergeev et al.2021 · 70 citationsMartin Turbet et al 2022 Planet. Sci. J. 3 211
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part II: Moist Cases -- The Two Waterworlds2109.11459v2 · Denis E. Sergeev, Thomas J. Fauchez, Martin Turbet et al.2021 · 77 citationsPlanet. Sci. J. (2022) 3 212
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part III: Simulated Observables -- The return of the spectrum2109.11460v2 · Thomas J. Fauchez, Geronimo L. Villanueva, Denis E. Sergeev et al.2021 · 66 citationsarXiv
A Snowball in Hell: The Potential Steam Atmosphere of TOI-1266c2109.10838v1 · C. E. Harman, Ravi Kumar Kopparapu, Gu\dhmundur Stef'ansson et al.2021 · 9 citationsarXiv
TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M dwarf host2107.13670v2 · Shubham Kanodia, Gudmundur Stefansson, Caleb I. Canas et al.2021 · 25 citationsAstronomical Journal, 162, 135, 2021
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