G
Garrelt Mellema
Researcher at Stockholm University
Publications - 265
Citations - 12481
Garrelt Mellema is an academic researcher from Stockholm University. The author has contributed to research in topics: Reionization & Redshift. The author has an hindex of 61, co-authored 256 publications receiving 11372 citations. Previous affiliations of Garrelt Mellema include University of Manchester & University of Toronto.
Papers
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Journal ArticleDOI
Discovery of a double ring in the core of eta Carinae
Sacha Hony,Carsten Dominik,L. B. F. M. Waters,Vincent Icke,Garrelt Mellema,R. van Boekel,A. de Koter,P. M. Morris,M. J. Barlow,Pierre Cox,Hans-Ulrich Käufl +10 more
TL;DR: In this article, the authors reported the discovery of a double ring structure in the waist of the nebula surrounding eta Carinae, which is reminiscent of that seen in SN1987A and some planetary nebulae.
Journal Article
Photo-evaporation of clumps in planetary nebulae
Garrelt Mellema,Alejandro C. Raga,Jorge Cantó,Peter Lundqvist,Bruce Balick,Wolfgang Steffen,Alberto Noriega-Crespo +6 more
TL;DR: In this paper, the evolution of dense neutral clumps in the outer parts of planetary nebulae is studied and an analytic model for the shock and accelerating phases and also the results of numeri- cal simulations which include detailed microphysics.
Journal ArticleDOI
The Epoch of Reionization 21-cm bispectrum: the impact of light-cone effects and detectability
TL;DR: In this article, the spherically averaged bispectrum of the 21-cm signal from the Epoch of Reionization (EoR) was calculated using a semi-numerical light-cone simulation and an ensemble of 50 independent realisations of the signal to estimate the cosmic variance errors.
Posted Content
Astro2020 Science White Paper: A proposal to exploit galaxy-21cm synergies to shed light on the Epoch of Reionization
Anne Hutter,Pratika Dayal,Sangeeta Malhotra,James E. Rhoads,Tirthankar Roy Choudhury,Benedetta Ciardi,Christopher J. Conselice,Asantha Cooray,Jean-Gabriel Cuby,Kanan K. Datta,Xiaohui Fan,Steven L. Finkelstein,Christopher M. Hirata,Ilian T. Iliev,Rolf A. Jansen,Koki Kakiichi,Anton M. Koekemoer,Umberto Maio,Suman Majumdar,Garrelt Mellema,Rajesh Mondal,Casey Papovich,Jason Rhodes,Martin Sahlén,Anna T. P. Schauer,Keitaro Takahashi,Graziano Ucci,Rogier A. Windhorst,Erik Zackrisson +28 more
TL;DR: In this article, the authors highlight the crucial and urgent synergies required between WFIRST, Subaru Hyper Suprime-Cam or other >25m-class telescopes galaxy observations and SKA 21cm measurements to constrain the nature of reionization (ionization history and topology) and its sources.