En los últimos años, hemos descubierto que los planetas son compañeros muy comunes en sistemas estelares. Esto plantea automáticamente la cuestión de cómo se originan estos objetos de roca sólida o gas voluminoso. Como Postdoctorado, mi investigación se centra en investigar los lugares de nacimiento de dichos planetas y conectar nuestra comprensión de la física y la hidrodinámica con lo que aprendemos de las observaciones más avanzadas. Para ello, utilizo cálculos numéricos, simulando la presencia de planetas jóvenes en discos protoplanetarios y prediciendo las huellas que producen.
Email:
cristobal.espinoza.r@usach.cl
Grados académicos:
2006-2010 PhD in Astronomy and Astrophysics, University of Manchester, UK
2003-2005 Magíster en Astronomía, Universidad de Chile
1998-2002 Licenciatura en Ciencia m/Física, Universidad de Chile
Línea de investigación:
Astrofísica de estrellas de neutrones. Pulsar timing. Física espacial. Física de la magnetósfera terrestre.
Actividad:
Mi línea principal de investigación son los pulsares. Usamos datos tomados con radio telescopios o satélites de rayos-X para estudiar cómo rotan y qué procesos físicos alteran su rotación. De esta manera aprendemos sobre lo que ocurre dentro y fuera de los pulsares.
Desde hace poco he estado también trabajando en Física espacial. En particular, hemos estado usado datos tomados en la magnetósfera terrestre para estudiar cómo se distribuye la eneregía entre las partículas y los efectos de la turbulencia en el transporte de energía en la cola de la magnetósfera.
2023-RCM Modeling of Bubble Injections Into the Inner Magnetosphere: Spectral Properties of Plasma Sheet Particles-Journal of Geophysical Research: Space Physics-https://doi.org/10.1029/2022JA030673
2023-Formation of the Outer Radiation Belt: Adiabatic Effect and Stochastic Acceleration-Springer Proceedings in Earth and Environmental Sciences-https://doi.org/10.1007/978-3-031-40728-4_23
2023-A new small glitch in Vela discovered with a hidden Markov model-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stad1335
2022-VLA proper motion constraints on the origin, age, and potential magnetar future of PSR J1734-3333-Astronomy and Astrophysics-https://doi.org/10.1051/0004-6361/202142598
2022-Narrowband Searches for Continuous and Long-duration Transient Gravitational Waves from Known Pulsars in the LIGO-Virgo Third Observing Run-Astrophysical Journal-https://doi.org/10.3847/1538-4357/ac6ad0
2022-Timing Six Energetic Rotation-powered X-Ray Pulsars, Including the Fast-spinning Young PSR J0058-7218 and Big Glitcher PSR J0537-6910-Astrophysical Journal-https://doi.org/10.3847/1538-4357/ac8743
2022-Spontaneous Magnetic Fluctuations and Collisionless Regulation of Turbulence in the Earth's Magnetotail-Astrophysical Journal-https://doi.org/10.3847/1538-4357/ac33a2
2021-Ion Kappa Distribution Parameters in the Magnetosphere of the Earth at Geocentric Distances Smaller Than 20 RE During Quiet Geomagnetic Conditions-Journal of Geophysical Research-https://doi.org/10.1029/2021JA029409
2021-Influence of MHD Turbulence on Ion Kappa Distributions in the Earth's Plasma Sheet as a Function of Plasma β Parameter-Frontiers in Astronomy and Space Sciences-https://doi.org/10.3389/fspas.2021.647121
2021-Constraints from LIGO O3 Data on Gravitational-wave Emission Due to R-modes in the Glitching Pulsar PSR J0537-6910-Astrophysical Journal Letters-https://doi.org/10.3847/2041-8213/abffcd
2021-Diving below the Spin-down Limit: Constraints on Gravitational Waves from the Energetic Young Pulsar PSR J0537-6910-Astrophysical Journal, Supplement Series-https://doi.org/10.3847/1538-4365/abdec9
2021-On the Relation between Kappa Distribution Functions and the Plasma Beta Parameter in the Earth's Magnetosphere: THEMIS Observations-Astrophysical Journal-https://doi.org/10.3847/1538-4357/ac0d52
2021-Corrigendum: Small glitches and other rotational irregularities of the Vela pulsar (Astronomy and Astrophysics (2021) 647 (A25) DOI: 10.1051/0004-6361/202039044)-https://doi.org/10.1051/0004-6361/202039044e
2020-Proper motion, spectra, and timing of PSR J1813-1749 using Chandra and NICER-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/staa2653
2020-Return of the Big Glitcher: NICER timing and glitches of PSR J0537-6910-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/staa2640
2024-2026-EMISION EN MULTIPLES BANDAS DE ENERGIA DESDE EL CENTRO GALACTICO PRODUCIDA POR RAYOS COSMICOS-Académico Patrocinante-042431ER_Postdoc
2021-2025-Revealing dynamical processes in isolated neutron stars through pulsar timing-Investigador Responsable-FONDECYT
2021-2022-Sobre la vida de una estrella: un viaje de luz y sonido por el cosmos-Asesor Científico-Astronomy Funds 2020. ANID/Gemini
2021-Role of turbulent transport and total pressure balance in the dynamics of the magnetosphere of the earth-Co-Investigador-FONDECYT
Email:
sebastian.perez.ma@usach.cl
Sitio web:
https://seba-perez.github.io/
Grados académicos:
2002-2006: Licenciatura en ciencias mención Astronomía, Universidad de Chile
2006-2009: PhD in Astrophysics, Oxford University
Línea de investigación:
Actualmente investiga los orígenes de los planetas y trabaja en la interacción arte-ciencia a través de vehículos como el arte, la divulgación científica y la educación
Actividad:
Doctor en Astrofísica de la Universidad de Oxford, actualmente director del Núcleo Milenio sobre Exoplanetas Jóvenes y sus Lunas (milenioyems.cl) y del Centro interdisciplinario CIRAS (ciras.cl). También dirige el proyecto astrodiálogos (astrodialogos.cl) de encuentros interculturales de diálogos entre comunidades de pueblos originarios y científicas. Fundador y director de la iniciativa Concierto Cielos (conciertocielos.cl) y autor de "Bitácora Planetaria: Cazadores de Eclipses", novela de astronomía que busca motivar a niñas a descubrir la ciencia.
Proyectos adjudicados
Dusting for the fingerprints of young exoplanets, Fondecyt Regular 1231663, 2023-2027
Potenciando el diálogo de saberes científicos y de pueblos originarios en astrofísica a través de la exploración en realidad virtual, Proyecto ANID-ALMA ASTRO21-0045, 2022-2024
Potenciando el diálogo de saberes científicos y mapuche en astrofísica a través de la exploración en realidad virtual, Proyecto Ciencia Pública CP21-P100, 2021-2022
RESUMEN PUBLICACIONES:
2023-The SPHERE view of three interacting twin disc systems in polarized light-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stac3478
2023-Spirals and Clumps in V960 Mon: Signs of Planet Formation via Gravitational Instability around an FU Ori Star?-Astrophysical Journal Letters-https://doi.org/10.3847/2041-8213/ace186
2023-Inner edges of planetesimal belts: collisionally eroded or truncated?-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stad1221
2023-The ALMA view of MP Mus (PDS 66): A protoplanetary disk with no visible gaps down to 4 au scales-Astronomy and Astrophysics-https://doi.org/10.1051/0004-6361/202245637
2023-Resolving the binary components of the outbursting protostar HBC 494 with ALMA-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stad1614
2022-The protoplanetary disc around HD 169142: Circumstellar or circumbinary?-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stab3474
2022-High-resolution ALMA observations of V4046 Sgr: A circumbinary disc with a thin ring-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stab3440
2022-The steady-state hydrodynamics of a long-lived disc: planetary system architecture and prospects of observing a circumplanetary disc shadow in V4046 Sgr-MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY-https://doi.org/10.1093/mnras/stab3438
2021-The effect of stellar multiplicity on protoplanetary discs: A near-infrared survey of the Lupus star-forming region-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/staa3674
2021-Millimeter-sized Dust Grains Surviving the Water-sublimating Temperature in the Inner 10 au of the FU Ori Disk-Astrophysical Journal-https://doi.org/10.3847/1538-4357/ac31b9
2021-A faint companion around CrA-9: Protoplanet or obscured binary?-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stab480
2021-Limits on the presence of planets in systems with debris discs: HD 92945 and HD 107146-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stab438
2021-Near-IR Observations of the Young Star [BHB2007]-1: A Substellar Companion Opening the Gap in the Disk-Astrophysical Journal-https://doi.org/10.3847/1538-4357/abec42
2021-The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - III. The evolution of substructures in massive discs at 3-5 au resolution-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/staa3787
2021-Non-Keplerian spirals, a gas-pressure dust trap, and an eccentric gas cavity in the circumbinary disc around HD 142527-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stab800
2021-A dusty filament and turbulent CO spirals in HD 135344B - SAO 206462-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stab2359
2020-The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-II. The effect of stellar multiplicity on disc properties-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/staa1886
2020-Subaru Near-infrared Imaging Polarimetry of Misaligned Disks around the SR 24 Hierarchical Triple System-Astronomical Journal-https://doi.org/10.3847/1538-3881/ab5850
2020-A Tale of Two Transition Disks: ALMA Long-baseline Observations of ISO-Oph 2 Reveal Two Closely Packed Nonaxisymmetric Rings and a ∼2 au Cavity-Astrophysical Journal Letters-https://doi.org/10.3847/2041-8213/abbcce
2020-Insights into the planetary dynamics of HD 206893 with ALMA-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/staa2386
2020-Erratum: Cooling in the shade of warped transition disks (Monthly Notices of the Royal Astronomical Society: Letters (2020) 491 (L17))-Monthly Notices of the Royal Astronomical Society: Letters-https://doi.org/10.1093/mnrasl/slz159
2020-Disks around T Tauri Stars with SPHERE (DARTTS-S): II. Twenty-one new polarimetric images of young stellar disks-Astronomy and Astrophysics-https://doi.org/10.1051/0004-6361/201936946
2019-Dust traps in the protoplanetary disc MWC 758: Two vortices produced by two giant planets?.-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stz802
2019-The Ophiuchus DIsk Survey Employing ALMA (ODISEA): Disk Dust Mass Distributions across Protostellar Evolutionary Classes-Astrophysical Journal Letters-https://doi.org/10.3847/2041-8213/ab1338
2019-Erratum: Kinematic Detections of Protoplanets: A Doppler Flip in the Disk of HD 100546 (Astrophysical Journal Letters (2019) 883 (L41) DOI: 10.3847/2041-8213/ab4425)-Astrophysical Journal Letters-https://doi.org/10.3847/2041-8213/ab4f77
2019-Predicting the Observational Signature of Migrating Neptune-sized Planets in Low-viscosity Disks-Astrophysical Journal-https://doi.org/10.3847/1538-4357/ab412f
2019-Cm-wavelength observations of MWC 758: Resolved dust trapping in a vortex-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/sty3269
2019-Cooling in the shade of warped transition discs-Monthly Notices of the Royal Astronomical Society: Letters-https://doi.org/10.1093/mnrasl/slz059
2019-The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - I: Project description and continuum images at 28 au resolution-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/sty2653
2019-Upper limits on protolunar disc masses using ALMA observations of directly imaged exoplanets-Monthly Notices of the Royal Astronomical Society-https://doi.org/10.1093/mnras/stz1775
2019-A data science model on production level pillar stability at el teniente mine-Mining Goes Digital - Proceedings of the 39th international symposium on Application of Computers and Operations Research in the Mineral Industry, APCOM 2019-https://doi.org/10.1201/9780429320774-36
RESUMEN PROYECTOS:
2024-2026-PROYECTOS DE INVESTIGACION-3240612
2023-2026-Dusting for the fingerprints of young exoplanets-ANID- Investigador Responsable — FONDECYT REGULAR
2022-2025-Millennium Nucleus on Young Exoplanets and their Moons-ANID — Director- Iniciativa Científica Milenio
