JA-Vazquez

Welcome to Cosmos

We are a team of talented cosmologists making the Universe looks better

Bio

Observational Cosmologist at the Instituto de Ciencias Fisicas - UNAM (2017 - )

I started my career as a theoretical cosmologist and slowly moving to statistics, data science and machine learning.

My research focuses on the exploration and analysis of astrophysical and cosmological observations; on the study of Dark energy, Dark Matter and Inflationary models through Bayesian statistics and scientific computation (Machine Learning).

I am co-author of several codes, including the SimpleMC code developed for the BOSS collaboration and initially released at .

Full CV

Current position

SNII 3: 2025.
Cátedra M. Moshinsky: 2024.
PRIDE C: 2023.
Member of AMC: 2024;

2022.

Titular A: 2022.
LSST (2022) and SDSS (2013) collaborations.

Current Projects

2023. PAPIIT - DGAPA IN117723.
2021. Ciencia de Frontera, FORDECYT-PRONACES.
2021. PAPIIT - DGAPA IA-104221.
2019. Ciencia Basica, SEP - CONACYT A1-S-21925.

Work Experience

2016-2017. Fellowship - Catedrático CONACYT, CINVESTAV.
2013-2016. Postdoctoral Research Associate, Brookhaven National Lab (BNL), U.S. Department of Energy (DoE), USA.

Education

Ph.D. Kavli Institute for Cosmology, Cambridge UK.
MASt. Centre for Mathematical Sciences, Cambridge UK.
M.Sc. Centro de Investigación y de Estudios Avanzados, MX.
B.Sc. Universidad Autónoma del Estado de Morelos, MX.

ICF

BNL

KICC

Cambridge

Cinvestav

UAEM

All Papers

60

Papers JCR

78

Total Papers Including Outreach and Proceedings

12,812

Citations Google-scholar

33

h-index
i10-index: 56

Preprints

--

ΛsCDM cosmology from a type-II minimally modified gravity.

Ozgur Akarsu, Antonio De Felice, Eleonora Di Valentino, Suresh Kumar, Rafael C. Nunes, Emre Ozulker, JAV, Anita Yadav.

ΛsCDM model: A promising scenario for alleviation of cosmological tensions

Ozgur Akarsu, Eleonora Di Valentino, Suresh Kumar, Rafael C. Nunes, JAV, Anita Yadav.

Do we need wavelets in the late Universe?

Luis A. Escamilla, Emre Özülker, Özgür Akarsu, Eleonora Di Valentino, JAV.

Scalar field emulator via anisotropically deformed vacuum energy

Ozgur Akarsu, Nihan Katirci, Anjan A. Sen, JAV.

Reconstructing rotation curves with artificial neural networks

Gabriela Garcia-Arroyo, Isidro Gómez-Vargas, JAV.

Publications (2025)

--

Testing an oscillatory behavior of dark energy

Phys. Rev. D.
Luis A. Escamilla, Supriya Pan, Eleonora Di Valentino, Andronikos Paliathanasis, JAV, Weiqiang Yang

2024

--

Deep Learning and genetic algorithms for cosmological Bayesian inference speed-up

Phys. Rev. D.
Isidro Gómez-Vargas, JAV.

Cosmological parameter estimation with Genetic Algorithms.

Universe
Ricardo Medel-Esquivel, Isidro Gomez-Vargas, Alejandro A. Morales, Ricardo Garcia-Salcedo, JAV.

Coupled Multi Scalar Field Dark Energy.

Phys. Rev. D.
JAV, David Tamayo, Gabriela Garcia, Isidro Gómez, Israel Quiros, Anjan A. Sen

Cosmology on a Gravitational Wave Background.

MNRAS
Tonatiuh Matos, Luis A. Escamilla, Maribel Hernandez, JAV.

Interacting Scalar fields: Dark Matter--Early Dark Energy.

Phys. Rev. D.
Gabriela Garcia-Arroyo, L. Arturo Ureña-López, JAV.

Cosmological constraints on ΛsCDM scenario in a type II minimally modified gravity

Phys. Rev. D.
Ozgur Akarsu, Antonio De Felice, Eleonora Di Valentino, Suresh Kumar, Rafael C. Nunes, Emre Ozulker, JAV, Anita Yadav.

Non-parametric reconstruction of cosmological observables using Gaussian Processes Regression

Universe
J. Jesús Velázquez, Luis A. Escamilla, Purba Mukherjee, JAV.

2023

Neural Networks Optimized by Genetic Algorithms in Cosmology.

Phys. Rev. D.
Isidro Gómez-Vargas, Joshua Briones Andrade, JAV.

Neural network reconstructions for the Hubble parameter, growth rate and distance modulus.

Eur. Phys. J. C
Isidro Gómez-Vargas, JAV, Ricardo Medel Esquivel, Ricardo García-Salcedo.

Model selection applied to non-parametric reconstructions of the Dark Energy.

Eur. Phys. J. C
Luis A. Escamilla, JAV.

Analysis of Dark Matter Halo Structure Formation in N-body Simulations with Machine Learning.

Phys. Rev. D.
Jazhiel Chacón, Isidro Gómez-Vargas, Ricardo Menchaca Méndez, JAV.

Relaxing cosmological tensions with a sign switching cosmological constant: Improved results.

Phys. Rev. D.
Ozgur Akarsu, Suresh Kumar, Emre Ozulker, JAV, Anita Yadav.

Bayesian analysis for rotational curves with l-boson stars as a dark matter component.

JCAP
Atalia Navarro-Boullosa, Argelia Bernal, JAV.

Model independent reconstruction of the Interacting Dark Energy Kernel: Binned and Gaussian process.

JCAP
Luis A. Escamilla, Ozgur Akarsu, Eleonora Di Valentino, JAV.

2022

Cosmology Intertwined: A Review of the Cosmology Associated with Tensions and Anomalies.

J. High En. Astrophys
Elcio Abdalla, et al.

Observational cosmology with Artificial Neural Networks.

Universe
Juan de Dios Rojas Olvera, Isidro Gomez-Vargas, JAV.

Classification algorithms applied to structure formation simulations.

Astronomy & Computing
Jazhiel Chacón JAV, Erick Almaraz.

Cosmological constraints on the Multi Scalar Field Dark Matter model.

Phys. Rev. D.
L.O. Tellez-Tovar, Tonatiuh Matos JAV.

2021

Relaxing cosmological tensions with a sign switching cosmological constant.

Phys. Rev. D.
Ozgur Akarsu, Suresh Kumar, Emre Ozulker, JAV.

Simple-graduated dark energy and spatial curvature.

Phys. Rev. D.
Giovanni Acquaviva, O. Akarsu, Nihan Katirci, JAV.

Core-Halo Mass Relation in Scalar Field Dark Matter Models and its Consequences.

Phys. Rev. D.
Luis E. Padilla, Tanja Rindler, Paul R. Shapiro, Tonatiuh Matos, JAV.

Bayesian model selection on Scalar e-Field Dark Energy.

Phys. Rev. D.
JAV, David Tamayo, Anjan A. Sen, Israel Quiros.

Cosmological parameter inference with Bayesian statistics.

Universe.
Luis E Padilla, Luis O Tellez, Luis A Escamilla, JAV.

Reconstructing the Universe: Testing the Mutual Consistency with Gaussian Processes.

Astron. J.
Ryan E. Keeley, Arman Shafieloo, Gong-Bo Zhao, JAV, Hanwool Koo.

Neural network within a Bayesian inference framework.

J.Phys.Conf.Ser.
Isidro Gomez, Ricardo Medel, Ricardo Garcia, JAV.

A simple estimation of the size of the molecules using a pencil lead.

The physics Teacher
Ricardo Medel, Isidro Gómez, JAV, Ricardo García.

The inverse problem of a dynamical system solved with genetic algorithms.

J.Phys.Conf.Ser.
Ricardo Medel, Isidro Gomez, Ricargo Garcia, JAV.

An introduction to Markov Chain Monte Carlo.

BEIO.
Ricardo Medel, Isidro Gómez, JAV, Ricardo García.

2020

Graduated dark energy: observational hints of a spontaneous sign switch in the cosmological constant.

Phys. Rev. D
Ozgur Akarsu, John D. Barrow, Luis A. Escamilla, JAV.

A simple supergravity model of inflation constrained with Planck 2018 data.

Phys. Rev. D
Gabriel Germán, Juan C Hidalgo, Francisco X. Linares, Ariadna Montiel, JAV.

Anisotropic massive Brans-Dicke gravity extension of standard CDM model.

Eur. Phys. J. C
Ozgur Akarsu, Nihan Katirci, Nese Ozdemir, JAV.

Dark Matter with N-Body Numerical Simulations.

Rev. Mex. Fís.
Jazhiel Chacón, JAV, Ruslan Gabbasov.

Inflationary Cosmology: From Theory to Observations.

Rev. Mex. Fís.
JAV, Luis E. Padilla, Tonatiuh Matos.

2019

Screening Λ with Energy-Momentum Log Gravity.

Eur. Phys. J. C
Ozgur Akarsu, John D Barrow, Charles VR Board, N Merve Uzun, JAV.

Fourier series expansion of the dark energy equation of state.

MNRAS
D Tamayo, JAV.

Scalar Field Dark Matter Spectator During Inflation: The Effect of Self-interaction.

JCAP
Luis E. Padilla, JAV, Tonatiuh Matos, Gabriel Germán.

Una Aplicación de las Redes Neuronales Artificiales en la Cosmología.

Rev. Mex. Inteligencia Artificial
Isidro Gómez, Ricardo Medel, Ricardo García, JAV.

Cosmología Observacional con redes Neuronales Artificiales.

ISSN 2594-2697, UNAM
JAV, Ricardo Medel, Isidro Gomez.

Astrobiología: origen de la vida en el Planeta Tierra.

El Faro - UNAM
Alejandro Prieto de los Monteros, JAV.

Working group

Theses

Reseach Topics include: Dark Energy , Dark Matter, Bayesian Statistics, Artificial Neural Networks, Genetic Algorithms .

All
Posdoc
PhD
MSc
BSc

Isidro

Current

2

Postdoc

3

PhD

4

MSc

2

BSc

3 Social Service

Former

1

Postdoc

5

PhD

5

MSc

10

BSc

17 Social Service

Scholarships - Research Stays

Interested in joining the research group.

Call To Action

Social Service, Beca PAPIIT, Beca Conacyt (Travel), Postdoc.

Events Organized

- 33 -

2do Congreso de Estudiantes.

ICF-UNAM, MX.

Diciembre 09-11, 2024

[30]

IX Scalar Field Dark Matter Workshop.

U de Guanajuato, MX.

Octubre 25-26, 2024

[30]

V Taller de Métodos numéricos y estadísticos en cosmología.

ICF-UNAM, MX.

Julio 31 - Agosto 2, 2024

[30]

3er Mini Workshop on High Performance Computing.

ICF-UNAM, MX.

Julio 29-30

[29]

Cosmo4s. Cosmo-Meeting V.

Tlaquepaque, Guadalajara, MX.

Diciembre 15-18, 2023

[28]

VIII Scalar Field Dark Matter Workshop.

Playa del Carmen, Cancún, MX.

Septiembre 26-29, 2023

[27]

II Mini Workshop on High Performance Computing.

ICF-UNAM, Morelos.

Agosto 16-18, 2023

[26]

Mexican Cosmo Astrostatistics.

Leon, Guanajuato.

Junio 19-25, 2023

[25]

Cosmo4s. Cosmo-Meeting IV.

Cuernavaca Morelos.

December 9-12, 2022

[24]

Mini Workshop on High Performance Computing.

Universidad Autonoma del Estado de Hidalgo.

November 23-25, 2022

[23]

VII Scalar Field Workshop.

Leon Guanajuato.

October 26-27, 2022

[22]

Cosmo Meeting III.

Cuernavaca Mor.

November 26-27, 2021

[21]

VI Scalar Field Dark Matter Workshop.

U Guanajuato

October 28-29, 2021

[20]

Mexican Astro Cosmo Statistics School.

U Guanajuato

June 29 - July 2, 2021

[19]

Cosmo4s. Cosmo-Meeting II.

ICF-UNAM

December 14-15, 2020

[18]

V Taller de Materia Oscura Escalar.

Zoom

October 22-23, 2020

[17]

Taller de Cosmología, SimpleMC.

Zoom

June 3-5, 2020

[16]

Cosmo-Meeting I.

ICF-UNAM

December 12-13, 2019

[15]

VII Taller de Gravitacion y Cosmologia.

ICF-UNAM

June 27-28, 2019

[14]

I Taller de Relatividad Numerica y Agujeros Negros.

ICF-UNAM

June 25-26, 2019

[13]

3rd Mexican Astro Cosmo Statistics School.

Leon, Guanajuato

June 10-14, 2019

[12]

IV Taller de Materia Oscura Escalar.

Queretaro, Qro.

May 30-31, 2019

[11]

MX Dark Matter.

Rivera Maya

November 3-5, 2018

[10]

Reunion en honor de Tonatiuh Matos.

CINVESTAV

September 20-21, 2018

[9]

VI Taller de Gravitacion y Cosmologia.

ICF-UNAM

August 2-3, 2018

[8]

IV Taller de Metodos Numericos y Estadisticos en Cosmologia.

ICF-UNAM

July 30-31, 1 August, 2018

[7]

Taller Cinvespy.

CINVESTAV

November 21-22, 2017

[6]

Advanced Summer School in Physics.

CINVESTAV

July 24-28, 2017

[5]

XXV Reunion Anual de la DGFM, de la SMF.

CINVESTAV

June 8-9, 2017

[4]

III Taller de Metodos Numericos y Estadisticos.

CINVESTAV

April 6-7, 2017

[3]

II Taller de Metodos Numericos y Estadisticos.

IF-UNAM

September 24-26, 2013

[2]

Mini Taller de CAMB.

ININ

January 21-22, 2011

[1]

References

--

Anthony Lasenby

KICC, Cambridge

Mike Hobson

KICC, Cambridge

Anže Slosar

Brookhaven National Laboratory

Tonatiuh Matos

CINVESTAV

Contact

Instituto de Ciencias Fisicas

Universidad Nacional Autonoma de Mexico

Address

Instituto de Ciencias Fisicas
Universidad Nacional Autonoma de Mexico
Av. Universidad 2001, 62210
Cuernavaca, Morelos
¿how to get there?

Email

javazquez@icf.unam.mx

Phone

+52 (777) 329-17-77

Loading

Your message has been sent. Thank you!

Visitors: