Julián David Alvarado Gómez
ASTROPHYSICIST
ASTROPHYSICIST
I am a Postdoctoral Fellow at the High Energy Astrophysics (HEA) division of the Center for Astrophysics | Harvard & Smithsonian. My research is mainly focused on magnetic fields and their influence over activity, winds, and the environment around the Sun and other late-type stars. For this I use space and ground-based observations, in combination with detailed plasma and magneto-hydrodynamics (MHD) numerical simulations.
I studied physics (B.Sc.) and astrophysics (M.Sc.) at the Universidad Nacional de Colombia and the Observatorio Astronómico Nacional. I performed my doctoral studies (Dr. rer. nat.) at the European Southern Observatory (ESO), as part of the International Max Planck Research School (IMPRS) on Astrophysics. You can find more details about my work in the next pages.
The Sun is our natural astrophysical laboratory. By studying it in detail, we have gained most of our understanding of the various plasma processes in the Universe. In particular, it provides an unprecedent view of the interactions and phenomena associated with astrophysical magnetic fields. The complexity of such phenomena can only be matched by their beauty.
Magnetic and activity cycles, solar corona, transient events (flares/CMEs), solar wind and space weather.
EUV, SXR, HXR, Magnetic-Doppler data | 3D MHD numerical simulations.
The large number of stars in the night sky offers endless possibilities in astrophysics. In recent years, advanced instrumentation and observational techniques have expanded our knowledge on stellar magnetism dramatically. This, combined with the ever-growing field of exoplanets, provides new synergies between solar and stellar systems science.
Solar-Stellar connection, coronae and winds, exo-space weather.
Spectro-polarimetry with NARVAL, ESPaDOnS and HARPS | 3D MHD numerical simulations.
Scroll down to find more information about refereed publications and current research projects.
Click on images/visualizations for short descriptions.
Garraffo, C.; Drake, J. J.; Alvarado-Gómez, J. D.; Moschou, S. P.; Cohen, O.
Keywords: Binaries: Close — Stars: Activity — Stars: Magnetic Fields — Stars: Laye-Type — Stars: Rotation
This work has been published in The Astrophysical Journal.
Moschou, S. P.; Sokolov, I. V.; Cohen, O.; Drake, J. J.; Borovikov, D.; Kasper, J. C.; Alvarado-Gómez, J. D.; Garraffo, C.
Keywords: Sun: Activity — Sun: Corona — Sun: Coronal Mass Ejections (CMEs) — Sun: Flares — Radio Emission
This work has been published in The Astrophysical Journal.
Cohen, O.; Moschou, S. P.; Glocer, A.; Sokolov, I. V.; Mazeh, T.; Drake, J. J.; Garraffo, C.; Alvarado-Gómez, J. D.
Keywords: Star-Planet Interactions — Planets and Satellites: Magnetic Fields — Plasmas — Radio Continuum: Planetary Systems
This work has been published in The Astronomical Journal.
Alvarado-Gómez, J. D.; Drake, J. J.; Cohen, O.; Moschou S. P.; Garraffo, C.
Keywords: Magnetic Fields — Magnetohydrodynamics (MHD) — Stellar Activity — Stellar Winds — Coronal Mass Ejections (CME)
This work has been published in The Astrophysical Journal.
Garraffo, C.; Drake, J. J.; Dotter, A.; Choi, J.; Burke, D. J.; Moschou S. P.; Alvarado-Gómez, J. D.; Kashyap, V. L.; Cohen, O.
Keywords: Stellar Evolution — Stellar Rotation — Magnetic Fields
This work has been published in The Astrophysical Journal.
Moschou S. P.; Drake, J. J.; Cohen, O.; Alvarado-Gómez, J. D.; Garraffo, C.
Keywords: Eclipsing Binaries — Stellar Flares — Late-Type Stars — Coronal Mass Ejections (CME) — X-rays
This work has been published in The Astrophysical Journal.
Alvarado-Gómez, J. D.; Hussain, G. A. J.; Drake, J. J.; Donati, J.-F.; Sanz-Forcada, J.; Stelzer, B.; Cohen, O.; Amazo-Gómez E. M.; Grunhut, J. H.; Garraffo, C.; Moschou S. P.; Silvester, J.; Oksala M. E.
Keywords: Magnetic Fields — Exoplanet Host — Solar-Type Stars — Spectropolarimetry — Stellar Activity
This work has been published in Monthly Notices of the Royal Astronomical Society.
Garraffo, C.; Drake, J. J.; Cohen, O.; Alvarado-Gómez, J. D.; Moschou S. P.
Keywords: Magnetic Fields — Magnetohydrodynamics (MHD) — Stellar Activity — Stellar Winds
This work has been published in The Astrophysical Journal Letters.
Alvarado-Gómez, J. D.; Hussain, G. A. J.; Cohen, O.; Drake, J. J.; Garraffo, C.; Grunhut, J.; Gombosi, T.I.
Keywords: Stellar Winds — Mass-Loss — Magnetic Fields — Late-Type — Magnetohydrodynamics (MHD)
This work has been published as cover of Volume 594 of Astronomy & Astrophysics.
Alvarado-Gómez, J. D.; Hussain, G. A. J.; Cohen, O.; Drake, J. J.; Garraffo, C.; Grunhut, J.; Gombosi, T.I.
Keywords: Coronae — Magnetic Fields — Late-Type — Magnetohydrodynamics (MHD)
This work has been published in Astronomy & Astrophysics.
Fajardo-Mendieta W. G.; Martínez-Oliveros, J. C.; Alvarado-Gómez, J. D.; Calvo-Mozo, B.
Keywords: Solar Flares — Impulsive Phase — Hard X-ray
This work has been published in The Astrophysical Journal.
Hussain, G. A. J.; Alvarado-Gómez, J. D.; Grunhut, J.; Donati, J.-F.; Alecian, E.; Oksala, M.; Morin, J.; Fares, R.; Jardine, M.; Drake, J. J.; Cohen, O.; Matt, S.; Petit, P.; Redfield, S.; Walter, F. M.
Keywords: Activity — Magnetic Fields — Solar Type — Spectropolarimetry — Radial Velocities
This work has been published in Astronomy & Astrophysics.
Alvarado-Gómez, J. D.; Hussain, G. A. J.; Grunhut, J.; Fares, R.; Donati, J.-F.; Alecian, E.; Kochukhov, O.; Oksala, M.; Morin, J.; Redfield, S.; Cohen, O.; Drake, J. J.; Jardine, M.; Matt, S.; Petit, P.; Walter, F. M.
Keywords: Activity — Magnetic Fields — Solar Type — Spectropolarimetry — Zeeman Doppler Imaging (ZDI)
This work has been published in Astronomy & Astrophysics.
Alvarado-Gómez, J. D.; Buitrago-Casas, J. C.; Martínez-Oliveros, J. C.; Lindsey, C.; Hudson, H.; Calvo-Mozo, B.
Keywords: Magnetic Field Variation — Flares— Local Helioseismology — Sunquakes
This work has been published in Solar Physics.
Type: Observing Time Proposal | P.I.: Julián D. Alvarado-Gómez
Co-Investigators: Amazo-Gómez, E. M.; Cohen, O.; Drake, J. J.; Garraffo, C.; Hussain, G. A. J.; Moschou, S. P.; Redfield, S.; Sanz-Forcada, J.; Stelzer, B.; Wood, B. E.
Telescope/Instrument: HST/STIS
Allocated time: 15 Orbits
Cycles: 25 & 26
Type: Observing Time Proposal | P.I.: Brian E. Wood
Co-Investigators: Alvarado-Gómez, J. D.; Cohen, O.; Drake, J. J.; Garraffo, C.; Jardine, M.; Linsky, J.; Redfield, S.; Vidotto, A.
Telescope/Instrument: HST/STIS
Allocated time: 36 Orbits
Cycle: 25
Type: Observing Time Proposal | P.I.: Seth Redfield
Co-Investigators: Alvarado-Gómez, J. D.; Cauley, P.; France, K.; Gandolfi, D.; Guenther, E.; Hussain, G. A. J.; Linsky, J.; Livingston, J.; Narita, N.; Niraula, P.; Shkolnik, E.; Wood, B.; Youngblood, A.
Telescope/Instrument: HST/STIS
Allocated time: 9 Orbits
Cycle: 25 (Mid-cycle proposal)
Type: Observing Time Proposal | P.I.: Julián D. Alvarado-Gómez
Co-Investigators: Drake, J. J.; Redfield, S.; Sanz-Forcada, J.; Stelzer, B.; Wood, B. E.
Telescope/Instrument: XMM-Newton/EPIC
Allocated time: 20 ks
Period: AO-17
Type: Observing Time Proposal | P.I.: Jeremy J. Drake
Co-Investigators: Alvarado-Gómez, J. D.; Hussain, G. A. J.; Redfield, S.; Cohen, O.; Garraffo, C.; Moschou, S. P.
Telescope/Instrument: XMM-Newton/EPIC
Allocated time: 30 ks
Period: AO-17
Type: Observing Time Proposal | P.I.: Jorge Sanz-Forcada
Co-Investigators: Stelzer, B.; Alvarado-Gómez, J. D.; Amazo-Gómez, E. M.
Telescope/Instrument: XMM-Newton/EPIC
Allocated time: 20 ks
Period: AO-16
Type: Observing Time Proposal | P.I.: Gaitee A. J. Hussain
Co-Investigators: Alvarado-Gómez, J. D.; Gandolfi, D.; Prieto-Arranz, J.; Redfield, S.; Niraula, P.; Drake, J. J.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 40.0 Hours | Top-Ranked proposal
Period: P102
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Drake, J. J.; Sanz-Forcada, J.; Stelzer, B.; Cohen, O.; Amazo-Gómez, E. M.; Grunhut, J.; Donati, J.-F.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 45.0 Hours | Top-Ranked proposal
Period: P101
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Drake, J. J.; Sanz-Forcada, J.; Stelzer, B.; Cohen, O.; Amazo-Gómez, E. M.; Grunhut, J.; Donati, J.-F.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 36.0 Hours | Top-Ranked proposal
Period: P100
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Drake, J. J.; Sanz-Forcada, J.; Stelzer, B.; Cohen, O.; Amazo-Gómez, E. M.; Grunhut, J.; Donati, J.-F.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 45.0 Hours | Top-Ranked proposal
Period: P99
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Cohen, O.; Sanz-Forcada, J.; Stelzer, B.; Amazo-Gómez, E. M.; Grunhut, J.; Drake, J. J.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 40.0 Hours | Top-Ranked proposal
Period: P98
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Grunhut, J.; Stelzer, B.; Sanz-Forcada, J.; Cohen, O.; Drake, J. J.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 37.0 Hours | Top-Ranked proposal
Period: P97
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Grunhut, J.; Stelzer, B.; Sanz-Forcada, J.; Cohen, O.; Drake, J. J.
Telescope/Instrument: ESO 3.6m/HARPSpol
Allocated time: 33.6 Hours
Period: P96
Type: Observing Time Proposal
Co-Investigators: Hussain, G. A. J.; Morin, J.; Donati, J.-F.; Folsom, C.; Petit, P.; Hebrard, E.
Telescope/Instrument: Télescope Bernard Lyot/NARVAL
Allocated time: 19.0 Hours
Period: 2015-A
Type: Computing Time Proposal
Co-Investigator: Drake, J. J.
Facility/Cluster: NASA Advanced Supercomputing Division/Pleiades cluster
Allocated time: 140k core hours
Period: 2018-2020
Type: Computing Time Proposal
Co-Investigator: Drake, J. J.
Facility/Cluster: XSEDE Ecosystem/Comet + superMIC clusters
Allocated time: 100k core hours
Period: 2017-2018
Type: Computing Time Proposal
Co-Investigators: Hussain, G. A. J.; Drake, J. J.; Cohen, O.
Facility/Cluster: Leibniz Supercomputing Centre (LRZ)/Computational Center for Particle and Astrophysics (C2PAP)
Allocated time: 840k core hours
Period: 2015-2017
The balance between body and mind is fundamental. While Astrophysics puts my mind to the test, I have found in the discipline of Calisthenics a natural path for developing body strength, agility, and resistance. You can check some of my progress below.
«No man has the right to be an amateur in the matter of physical training.
It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable»
Center for Astrophysics | Harvard & Smithsonian
60 Garden Street, MS 06
Cambridge, MA 02138
United States of America
Phone: (+1) (617) 496 2592
E-mail: julian.alvarado-gomez@cfa.harvard.edu