All Stories

  1. Space Weather Impact of Three Solar Flares Observed by the POEMAS Telescope at 45 and 90 GHz

    Article • Journal of Geophysical Research Space Physics, November 2025, American Geophysical Union (AGU)

    Adriana Valio

  2. Starspot Temperature of CoRoT-2 from Multiwavelength Observations with SPARC4

    Article • The Astrophysical Journal, October 2025, American Astronomical Society

    Adriana Valio

  3. Extracting starspot structures from exoplanet transit photometry

    Article • EAS Publications Series, October 2025, EDP Sciences

    Adriana Valio

  4. Starspot Area Coverage: Correlation with Age and Spectral Type in FGK and M Stars

    Article • The Astrophysical Journal Letters, May 2025, American Astronomical Society

    Adriana Valio

  5. The PLATO mission

    Article • Experimental Astronomy, April 2025, Springer Science + Business Media

    Tim Lichtenberg, Adriana Valio, João MP Coelho

  6. Particle Acceleration in Solar Flares From Radio and Hard X‐Ray Spectra

    Article • Astronomische Nachrichten, December 2024, Wiley

    Adriana Valio

  7. Probing the magnetic fields of starspots with transit mapping

    Article • EAS Publications Series, November 2024, EDP Sciences

    Adriana Valio

  8. Sob a influência do Sol: como o clima espacial afeta nosso planeta

    Article • Cadernos de Astronomia, September 2024, Universidade Federal do Espirito Santo

    Adriana Valio

  9. Differential Rotation of CoRoT Stars and a Kepler Binary Star from Starspot Transit Mapping

    Article • The Astrophysical Journal, August 2024, American Astronomical Society

    Adriana Valio

  10. TOI-1173 A b: The First Inflated Super-Neptune in a Wide Binary System

    Article • The Astronomical Journal, July 2024, American Astronomical Society

    Adriana Valio

  11. Hydrogen recombination continuum as the radiative model for stellar optical flares

    Article • Monthly Notices of the Royal Astronomical Society, January 2024, Oxford University Press (OUP)

    Adriana Valio

  12. Differential rotation of stars from spot transit mapping: dependence on rotation period and effective temperature

    Article • Proceedings of the International Astronomical Union, December 2023, Cambridge University Press

    Adriana Valio

  13. Exploring the Relation Between Magnetic Fields, Starspots, and CMEs

    Article • Proceedings of the International Astronomical Union, December 2023, Cambridge University Press

    Adriana Valio

  14. Dependence of Stellar Differential Rotation on Effective Temperature and Rotation: An Analysis from Starspot Transit Mapping

    Article • The Astrophysical Journal, October 2023, American Astronomical Society

    Adriana Valio

  15. Impact of M-dwarf stellar wind and photoevaporation on the atmospheric evolution of small planets

    Article • Monthly Notices of the Royal Astronomical Society, September 2023, Oxford University Press (OUP)

    Adriana Valio

  16. Solar Submillimeter Telescope next generation

    Article • August 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Adriana Valio

  17. Statistical analysis of the onset temperature of solar flares in 2010–2011

    Article • Monthly Notices of the Royal Astronomical Society, August 2023, Oxford University Press (OUP)

    Adriana Valio

  18. Automatic detection of solar flares observed at 45 GHz by the POEMAS telescope

    Article • Astronomy and Computing, July 2023, Elsevier

    Adriana Valio

  19. Trajectories of coronal mass ejection from solar-type stars

    Article • Monthly Notices of the Royal Astronomical Society, May 2023, Oxford University Press (OUP)

    Adriana Valio

  20. Photometric variations from stellar activity as an age indicator for solar-twins

    Article • Monthly Notices of the Royal Astronomical Society, April 2023, Oxford University Press (OUP)

    Adriana Valio

  21. The connection between starspots and superflares: a case study of two stars

    Article • Monthly Notices of the Royal Astronomical Society Letters, March 2023, Oxford University Press (OUP)

    Adriana Valio

  22. The effect of stellar contamination on low-resolution transmission spectroscopy: needs identified by NASA’s Exoplanet Exploration Program Study Analysis Group 21

    Article • RAS Techniques and Instruments, January 2023, Oxford University Press (OUP)

    Chuanfei Dong, Adriana Valio

  23. Stellar Obliquity from Spot Transit Mapping of Kepler-210

    Article • The Astrophysical Journal, November 2022, American Astronomical Society

    Adriana Valio

  24. Highlights of Solar Observations with Two Brazilian Radio Telescopes

    Article • Brazilian Journal of Geophysics, October 2022, Sociedade Brasileira de Geologia

    Adriana Valio

  25. A Genetic Algorithm to Model Solar Radio Active Regions From 3D Magnetic Field Extrapolations

    Article • Frontiers in Astronomy and Space Sciences, June 2022, Frontiers

    Adriana Valio

  26. Dynamo activity of the K dwarf KOI-883 from transit photometry mapping

    Article • Monthly Notices of the Royal Astronomical Society, January 2022, Oxford University Press (OUP)

    Adriana Valio

  27. Superflares and Starspots: when size does not matter

    Article • December 2021, Springer Science + Business Media

    Adriana Valio

  28. Kepler-411 Star Activity: Connection between Starspots and Superflares

    Article • The Astrophysical Journal Letters, November 2021, American Astronomical Society

    Adriana Valio

  29. Subterahertz radius and limb brightening of the Sun derived from SST and ALMA

    Article • Monthly Notices of the Royal Astronomical Society, October 2021, Oxford University Press (OUP)

    Adriana Valio

  30. Detection of Aerosols at Microbar Pressures in an Exoplanet Atmosphere

    Article • The Astronomical Journal, August 2021, American Astronomical Society

    Adriana Valio

  31. Broken Power-law Energy Spectra of the Accelerated Electrons Detected in Radio and Hard X-Rays during the SOL2013-05-13 Event

    Article • The Astrophysical Journal Letters, June 2021, American Astronomical Society

    Adriana Valio

  32. Detection of an Atmosphere on a Rocky Exoplanet

    Article • The Astronomical Journal, April 2021, American Astronomical Society

    Adriana Valio

  33. The Subterahertz Solar Cycle: Polar and Equatorial Radii Derived from SST and ALMA

    Article • The Astrophysical Journal, March 2021, American Astronomical Society

    Adriana Valio

  34. Kepler-411 Differential Rotation from Three Transiting Planets

    Article • The Astrophysical Journal Letters, January 2021, American Astronomical Society

    Adriana Valio

  35. Superflares UV impact on the habitability of exoplanets

    Article • January 2021, Elsevier

    Adriana Valio

  36. Surface and Oceanic Habitability of Trappist-1 Planets under the Impact of Flares

    Article • Astrobiology, December 2020, Mary Ann Liebert Inc

    Adriana Valio

  37. Spectral signature of solar active region in millimetre and submillimetre wavelengths

    Article • Monthly Notices of the Royal Astronomical Society, October 2020, Oxford University Press (OUP)

    Adriana Valio

  38. The Submillimeter Active Region Excess Brightness Temperature during Solar Cycles 23 and 24

    Article • The Astrophysical Journal, October 2020, American Astronomical Society

    Adriana Valio

  39. Correlations of Sunspot Physical Characteristics during Solar Cycle 23

    Article • Solar Physics, September 2020, Springer Science + Business Media

    Adriana Valio

  40. The Evolutionary Track of H/He Envelopes of the Observed Population of Sub-Neptunes and Super-Earths

    Article • The Astrophysical Journal, July 2020, American Astronomical Society

    Adriana Valio

  41. Inferring the Magnetic Field Asymmetry of Solar Flares from the Degree of Polarisation at Millimetre Wavelengths

    Article • Solar Physics, June 2020, Springer Science + Business Media

    Adriana Valio

  42. Planetary Transits at Radio Wavelengths: Secondary Eclipses of Hot Jupiter Extended Atmospheres

    Article • The Astrophysical Journal, May 2020, American Astronomical Society

    Adriana Valio

  43. HATS: A Ground-Based Telescope to Explore the THz Domain

    Article • Solar Physics, April 2020, Springer Science + Business Media

    Adriana Valio

  44. Optical depth measurements at 45 and 90 GHz in CASLEO

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, March 2020, Elsevier

    Adriana Valio

  45. Stellar magnetic activity and the butterfly diagram of Kepler-63

    Article • EAS Publications Series, March 2020, EDP Sciences

    Adriana Valio

  46. Activity and differential rotation of the early M dwarf Kepler-45 from transit mapping

    Article • Monthly Notices of the Royal Astronomical Society, January 2020, Oxford University Press (OUP)

    Adriana Valio

  47. The Solar Radius at 37 GHz Through Cycles 22 to 24

    Article • Solar Physics, December 2019, Springer Science + Business Media

    Adriana Valio

  48. The effect of stellar activity on the spectroscopic stellar parameters of the young solar twin HIP 36515

    Article • Monthly Notices of the Royal Astronomical Society Letters, October 2019, Oxford University Press (OUP)

    Adriana Valio

  49. Center-to-Limb Variation of Solar Bursts Polarization at Millimeter Wavelengths

    Article • Solar Physics, August 2019, Springer Science + Business Media

    Adriana Valio

  50. Characterization of stellar activity using transits and its impact on habitability

    Article • Proceedings of the International Astronomical Union, June 2019, Cambridge University Press

    Adriana Valio

  51. CME deflections due to magnetic forces from the Sun and Kepler-63

    Article • Proceedings of the International Astronomical Union, June 2019, Cambridge University Press

    Adriana Valio

  52. Stellar activity and rotation of the planet host Kepler-17 from long-term space-borne photometry

    Article • EAS Publications Series, May 2019, EDP Sciences

    Adriana Valio

  53. Solar Polar Brightening and Radius at 100 and 230 GHz Observed by ALMA

    Article • The Astrophysical Journal, January 2019, American Astronomical Society

    Adriana Valio

  54. Differential rotation of Kepler-71 via transit photometry mapping of faculae and starspots

    Article • Monthly Notices of the Royal Astronomical Society, January 2019, Oxford University Press (OUP)

    Adriana Valio

  55. Estudo da atividade estelar da Kepler-289 a partir da modelagem de trânsitos planetários

    Article • Revista Brasileira de Ensino de Física, January 2019, FapUNIFESP (SciELO)

    Adriana Valio

  56. Superflare Ultraviolet Impact on Kepler-96 System: A Glimpse of Habitability When the Ozone Layer First Formed on Earth

    Article • Astrobiology, November 2018, Mary Ann Liebert Inc

    Adriana Valio

  57. The 6 September 2017 X9 Super Flare Observed From Submillimeter to Mid‐IR

    Article • Space Weather, September 2018, American Geophysical Union (AGU)

    Adriana Valio

  58. The biological impact of superflares on planets in the Habitable Zone

    Article • Proceedings of the International Astronomical Union, August 2018, Cambridge University Press

    Adriana Valio

  59. The Best Planets to Harbor Detectable Exomoons

    Article • The Astronomical Journal, July 2018, American Astronomical Society

    Adriana Valio

  60. Correction to: Solar Radius at Subterahertz Frequencies and Its Relation to Solar Activity

    Article • Solar Physics, June 2018, Springer Science + Business Media

    Adriana Valio

  61. Association of Radio Polar Cap Brightening with Bright Patches and Coronal Holes

    Article • The Astrophysical Journal, December 2017, American Astronomical Society

    Adriana Valio

  62. Solar Radius at Subterahertz Frequencies and Its Relation to Solar Activity

    Article • Solar Physics, December 2017, Springer Science + Business Media

    Adriana Valio

  63. Activity and Rotation of Kepler-17

    Article • The Astrophysical Journal, February 2017, American Astronomical Society

    Adriana Valio

  64. Spectral Trends of Solar Bursts at Sub-THz Frequencies

    Article • Solar Physics, January 2017, Springer Science + Business Media

    Adriana Valio

  65. STELLAR MAGNETIC CYCLES IN THE SOLAR-LIKE STARS KEPLER-17 AND KEPLER-63

    Article • The Astrophysical Journal, October 2016, American Astronomical Society

    Adriana Valio

  66. Differential rotation of stars with multiple transiting planets

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Adriana Valio

  67. Interaction of extra solar planets with their host star

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Douglas Silva , Adriana Valio

  68. Using planetary transits to estimate magnetic cycles lengths in Kepler stars

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Adriana Valio

  69. The influence of eclipses in the stellar radio emission

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Caius Selhorst, Adriana Valio

  70. Solar Radius at Sub-Terahertz Frequencies

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Adriana Valio

  71. Starspots properties and stellar activity from planetary transits

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Adriana Valio

  72. IAU volume 12 issue S328 Cover and Front matter

    Article • Proceedings of the International Astronomical Union, October 2016, Cambridge University Press

    Adriana Valio

  73. New Suns in the Cosmos II: differential rotation inKeplerSun-like stars

    Article • Monthly Notices of the Royal Astronomical Society, August 2016, Oxford University Press (OUP)

    Adriana Valio

  74. Rotation Profile of Kepler-63 from Planetary Transits

    Article • Proceedings of the International Astronomical Union, November 2015, Cambridge University Press

    Adriana Valio

  75. The PLATO 2.0 mission

    Article • Experimental Astronomy, September 2014, Springer Science + Business Media

    Adriana Valio, giuliano giuffrida

  76. THE 17 GHz ACTIVE REGION NUMBER

    Article • The Astrophysical Journal, July 2014, Institute of Physics Publishing

    Adriana Valio

  77. PLANETARY TRANSITS WITH THE ATACAMA LARGE MILLIMETER/SUBMILLIMETER ARRAY RADIO INTERFEROMETER

    Article • The Astrophysical Journal Letters, October 2013, Institute of Physics Publishing

    Adriana Valio

  78. Starspots Magnetic field by transit mapping

    Article • Proceedings of the International Astronomical Union, August 2013, Cambridge University Press

    Adriana Valio

  79. Overview of semi-sinusoidal stellar variability with the CoRoT satellite

    Article • EAS Publications Series, June 2013, EDP Sciences

    Adriana Valio

  80. A BRIGHT IMPULSIVE SOLAR BURST DETECTED AT 30 THz

    Article • The Astrophysical Journal, April 2013, Institute of Physics Publishing

    Adriana Valio

  81. POlarization Emission of Millimeter Activity at the Sun (POEMAS): New Circular Polarization Solar Telescopes at Two Millimeter Wavelength Ranges

    Article • Solar Physics, February 2013, Springer Science + Business Media

    Adriana Valio

  82. SOLAR-T: terahertz photometers to observe solar flare emission on stratospheric balloon flights

    Article • August 2012, SPIE

    Adriana Valio

  83. Detection of Exomoons Inside the Habitable Zone

    Article • Proceedings of the International Astronomical Union, August 2012, Cambridge University Press

    Adriana Valio

  84. TRANSIT MODEL OF PLANETS WITH MOON AND RING SYSTEMS

    Article • The Astrophysical Journal, November 2011, Institute of Physics Publishing

    Adriana Valio

  85. Semi-empirical modelling of stellar magnetic activity

    Article • Proceedings of the International Astronomical Union, October 2011, Cambridge University Press

    Adriana Valio

  86. The Relationship Between Solar Radio and Hard X-ray Emission

    Article • Space Science Reviews, July 2011, Springer Science + Business Media

    Adriana Valio

  87. THE BEHAVIOR OF THE 17 GHz SOLAR RADIUS AND LIMB BRIGHTENING IN THE SPOTLESS MINIMUM XXIII/XXIV

    Article • The Astrophysical Journal, May 2011, Institute of Physics Publishing

    Adriana Valio

  88. A Method to Identify and Characterize Binary Candidates—A Study of CoRoT1 Data

    Article • Publications of the Astronomical Society of the Pacific, May 2011, Institute of Physics Publishing

    Adriana Valio

  89. Time evolution and rotation of starspots on CoRoT-2 from the modelling of transit photometry

    Article • EAS Publications Series, March 2011, EDP Sciences

    Adriana Valio

  90. Photospheric activity, rotation, and star-planet interaction of the planet-hosting star CoRoT-6

    Article • EAS Publications Series, November 2010, EDP Sciences

    Adriana Valio

  91. Search for continuum solar flare radiation in the terahertz range

    Article • September 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Adriana Valio

  92. Study of stellar activity through transit mapping of starspots

    Article • Proceedings of the International Astronomical Union, August 2010, Cambridge University Press

    Adriana Valio

  93. Properties of starspots on CoRoT-2

    Article • EAS Publications Series, February 2010, EDP Sciences

    Adriana Valio

  94. Selection of most promising CoRoT candidates for radial-velocity follow-up

    Article • Proceedings of the International Astronomical Union, November 2009, Cambridge University Press

    Adriana Valio

  95. Submillimeter and X-ray observations of an X class flare

    Article • EAS Publications Series, August 2009, EDP Sciences

    Adriana Valio

  96. The influence of spicules in the solar radius at multiple radio wavelengths

    Article • Proceedings of the International Astronomical Union, August 2009, Cambridge University Press

    Adriana Valio

  97. The influence of starspots activity on the determination of planetary transit parameters

    Article • Proceedings of the International Astronomical Union, August 2009, Cambridge University Press

    Adriana Valio

  98. Variability of the solar spectral irradiance and energetic particles

    Article • Proceedings of the International Astronomical Union, August 2009, Cambridge University Press

    Adriana Valio

  99. RAPID PULSATIONS IN SUB-THz SOLAR BURSTS

    Article • The Astrophysical Journal, May 2009, Institute of Physics Publishing

    Adriana Valio

  100. Magnetic activity in the photosphere of CoRoT-Exo-2a

    Article • EAS Publications Series, November 2008, EDP Sciences

    Adriana Valio

  101. New telescopes for ground-based solar observations at submillimeter and mid-infrared

    Article • August 2008, SPIE

    Adriana Valio

  102. Estimating Stellar Rotation from Starspot Detection during Planetary Transits

    Article • The Astrophysical Journal, July 2008, Institute of Physics Publishing

    Adriana Valio

  103. Solar atmospheric model over a highly polarized 17 GHz active region

    Article • EAS Publications Series, July 2008, EDP Sciences

    Adriana Valio

  104. Evidence that Synchrotron Emission from Nonthermal Electrons Produces the Increasing Submillimeter Spectral Component in Solar Flares

    Article • Solar Physics, October 2007, Springer Science + Business Media

    Adriana Valio

  105. A very narrow gyrosynchrotron spectrum during a solar flare

    Article • EAS Publications Series, September 2006, EDP Sciences

    Adriana Valio

  106. Physical conditions of the acceleration region of a solar flare with an unusually narrow gyrosynchrotron spectrum

    Article • Proceedings of the International Astronomical Union, August 2006, Cambridge University Press

    Adriana Valio

  107. Search for Planetary Candidates within the OGLE Stars

    Article • The Astrophysical Journal, May 2006, Institute of Physics Publishing

    Adriana Valio

  108. What determines the radio polar brightening?

    Article • EAS Publications Series, August 2005, EDP Sciences

    Adriana Valio

  109. Diffuse Component Spectra of Solar Active Regions at Submillimeter Wavelengths

    Article • Solar Physics, April 2005, Springer Science + Business Media

    Adriana Valio

  110. Solar atmospheric model with spicules applied to radio observation

    Article • EAS Publications Series, March 2005, EDP Sciences

    Adriana Valio

  111. Solar Radio Astronomy

    Article • January 2005, American Institute of Physics

    Adriana Valio

  112. Study of active region temporal evolution at 17GHz

    Article • January 2005, American Institute of Physics

    Adriana Valio

  113. The Relationship between Synchrotron and Bremsstrahlung Emission of Nonthermal Electrons during a Solar Flare. A detailed study during the August 30, 2002 X1.5 event

    Article • January 2005, American Institute of Physics

    Adriana Valio

  114. Radius variations over a solar cycle

    Article • EAS Publications Series, June 2004, EDP Sciences

    Adriana Valio

  115. A New Solar Burst Spectral Component Emitting Only in the Terahertz Range

    Article • The Astrophysical Journal, February 2004, Institute of Physics Publishing

    Adriana Valio

  116. Temporal and angular variation of the solar limb brightening at 17 GHz

    Article • EAS Publications Series, April 2003, EDP Sciences

    Adriana Valio

  117. Method for Spot Detection on Solar-like Stars

    Article • The Astrophysical Journal, March 2003, Institute of Physics Publishing

    Adriana Valio

  118. Solar Submillimeter and Gamma‐Ray Burst Emission

    Article • The Astrophysical Journal, August 2002, Institute of Physics Publishing

    Adriana Valio

  119. Beam profile determination by tomography of solar scans

    Article • EAS Publications Series, May 2002, EDP Sciences

    Adriana Valio

  120. Article • Solar Physics, January 2002, Springer Science + Business Media

    Adriana Valio

  121. Rapid Submillimeter Brightenings Associated with a Large Solar Flare

    Article • The Astrophysical Journal, February 2001, Institute of Physics Publishing

    Adriana Valio

  122. Correlation of Microwave and Hard X‐Ray Spectral Parameters

    Article • The Astrophysical Journal, December 2000, Institute of Physics Publishing

    Adriana Valio

  123. Time Variability in the Radio Brightness Distribution of Saturn

    Article • Icarus, November 1999, Elsevier

    Adriana Valio

  124. Multiple Components in the Millimeter Emission of a Solar Flare

    Article • The Astrophysical Journal, September 1999, Institute of Physics Publishing

    Adriana Valio

  125. Solar Radius Variations at 48 GH[CLC]z[/CLC] Correlated with Solar Irradiance

    Article • The Astrophysical Journal, July 1999, Institute of Physics Publishing

    Adriana Valio

  126. Article • Solar Physics, January 1998, Springer Science + Business Media

    Adriana Valio

  127. Article • Solar Physics, January 1998, Springer Science + Business Media

    Adriana Valio

  128. Imaging the Chromospheric Evaporation of the 1994 June 30 Solar Flare

    Article • The Astrophysical Journal, June 1997, Institute of Physics Publishing

    Adriana Valio

  129. Article • Solar Physics, January 1997, Springer Science + Business Media

    Adriana Valio

  130. Comprehensive Multiwavelength Observations of the 1992 January 7 Solar Flare

    Article • The Astrophysical Journal Supplement Series, October 1996, Institute of Physics Publishing

    Adriana Valio

  131. First Images of a Solar Flare at Millimeter Wavelengths

    Article • The Astrophysical Journal, February 1996, Institute of Physics Publishing

    Adriana Valio