Garrelt Mellema

professor

Stockholm University

Sweden

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About

Garrelt Mellema is a professor at Stockholm University in Sweden. His research focuses on astrophysical phenomena, particularly related to the Epoch of Reionization and its effects on the intergalactic medium, as well as ionized astrophysical plasmas. Recent publications include studies on Lyman-alpha feedback during Cosmic Dawn and advancements in 21-cm signal analysis using machine learning techniques.

Articles (22)

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2025

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2021

Collaborators (9)

Åsa Larson

Professor in theoretical molecular physics

Stockholm University

SWEDEN

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Ilian Iliev

University of Sussex

UNITED KINGDOM

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Miguel Morales

Professor

University of Washington

UNITED STATES

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C M Trott

Curtin University

AUSTRALIA

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Bradley Greig

University of Melbourne

AUSTRALIA

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Rajesh Mondal

Stockholm University

SWEDEN

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Jonathan Pritchard

Professor of Astrostatistics

Imperial College London

UNITED KINGDOM

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Aurel Schneider

University of Zurich

SWITZERLAND

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Sambit K Giri

SWEDEN

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Garrelt Mellema

Research Interests

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About

Articles (22)

Exploring the effect of different cosmologies on the Epoch of Reionization 21-cm signal with polar

A multi-ion non-equilibrium solver for ionised astrophysical plasmas with arbitrary elemental abundances

Lyman-α feedback prevails at Cosmic Dawn: implications for the first galaxies, stars, and star clusters

The forest at EndEoR: the effect of Lyman limit systems on the end of reionization

The 21-cm signal during the end stages of reionization

Probing the intergalactic medium during the Epoch of Reionization using 21 cm signal power spectra

Constraining cosmic reionization by combining the kinetic Sunyaev–Zel’dovich and the 21 cm power spectra

Impact of the Epoch of Reionization sources on the 21-cm bispectrum

Starbursts in low-mass haloes at Cosmic Dawn. I. The critical halo mass for star formation

POLAR - I: linking the 21-cm signal from the epoch of reionization to galaxy formation

Studying the multifrequency angular power spectrum of the cosmic dawn 21-cm signal

21-cm signal from the Epoch of Reionization: a machine learning upgrade to foreground removal with Gaussian process regression

CONCERTO: Simulating the CO, [CII], and [CI] line emission of galaxies in a 117 deg<sup>2</sup> field and the impact of field-to-field variance

The large-scale 21-cm power spectrum from reionization

The multi-frequency angular power spectrum in parameter studies of the cosmic 21-cm signal

Multi-frequency angular power spectrum of the 21 cm signal from the Epoch of Reionisation using the Murchison Widefield Array

Redshifted 21-cm bispectrum: impact of the source models on the signal and the IGM physics from the Cosmic Dawn

The Epoch of Reionization 21-cm bispectrum: the impact of light-cone effects and detectability

Redshift-space distortions in simulations of the 21-cm signal from the cosmic dawn

Deep learning approach for identification of H ii regions during reionization in 21-cm observations

Measuring the topology of reionization with Betti numbers

Constraining the state of the intergalactic medium during the Epoch of Reionization using MWA 21-cm signal observations

Collaborators (9)

Åsa Larson

Ilian Iliev

Miguel Morales

C M Trott

Bradley Greig

Rajesh Mondal

Jonathan Pritchard

Aurel Schneider

Sambit K Giri

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