Gas filaments of the cosmic web located around active galaxies in a protocluster

Umehata, H.; Fumagalli, M.; Smail, I.; Matsuda, Y.; Swinbank, A.M.; Cantalupo, S.; Sykes, C.; Ivison, R.J.; Steidel, C.C.; Shapley, A.E.; Vernet, J.; Yamada, T.; Tamura, Y.; Kubo, M.; Nakanishi, K.; Kajisawa, M.; Hatsukade, B.; Kohno, K.

doi:10.1126/science.aaw5949

Gas filaments of the cosmic web located around active galaxies in a protocluster

Umehata, H.; Fumagalli, M.; Smail, I.; Matsuda, Y.; Swinbank, A.M.; Cantalupo, S.; Sykes, C.; Ivison, R.J.; Steidel, C.C.; Shapley, A.E.; Vernet, J.; Yamada, T.; Tamura, Y.; Kubo, M.; Nakanishi, K.; Kajisawa, M.; Hatsukade, B.; Kohno, K.

Authors

H. Umehata

Professor Michele Fumagalli michele.fumagalli@durham.ac.uk
Academic Visitor

Ian Smail ian.smail@durham.ac.uk
Emeritus Professor

Y. Matsuda

Professor Mark Swinbank a.m.swinbank@durham.ac.uk
Professor

S. Cantalupo

Calvin Verrier Sykes calvin.v.sykes@durham.ac.uk
PGR Student Doctor of Philosophy

R.J. Ivison

C.C. Steidel

A.E. Shapley

J. Vernet

T. Yamada

Y. Tamura

M. Kubo

K. Nakanishi

M. Kajisawa

B. Hatsukade

K. Kohno

Abstract

Cosmological simulations predict the Universe contains a network of intergalactic gas filaments, within which galaxies form and evolve. However, the faintness of any emission from these filaments has limited tests of this prediction. We report the detection of rest-frame ultraviolet Lyman-alpha radiation from multiple filaments extending more than one megaparsec between galaxies within the SSA 22 proto-cluster at a redshift of 3.1. Intense star formation and supermassive black-hole activity is occurring within the galaxies embedded in these structures, which are the likely sources of the elevated ionizing radiation powering the observed Lyman-alpha emission. Our observations map the gas in filamentary structures of the type thought to fuel the growth of galaxies and black holes in massive proto-clusters.

Citation

Umehata, H., Fumagalli, M., Smail, I., Matsuda, Y., Swinbank, A., Cantalupo, S., Sykes, C., Ivison, R., Steidel, C., Shapley, A., Vernet, J., Yamada, T., Tamura, Y., Kubo, M., Nakanishi, K., Kajisawa, M., Hatsukade, B., & Kohno, K. (2019). Gas filaments of the cosmic web located around active galaxies in a protocluster. Science, 366(6461), 97-100. https://doi.org/10.1126/science.aaw5949

Journal Article Type	Article
Acceptance Date	Sep 2, 2019
Online Publication Date	Oct 4, 2019
Publication Date	Oct 4, 2019
Deposit Date	Oct 16, 2019
Publicly Available Date	Oct 16, 2019
Journal	Science
Print ISSN	0036-8075
Electronic ISSN	1095-9203
Publisher	American Association for the Advancement of Science
Peer Reviewed	Peer Reviewed
Volume	366
Issue	6461
Pages	97-100
DOI	https://doi.org/10.1126/science.aaw5949
Public URL	https://durham-repository.worktribe.com/output/1287921

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Copyright Statement
This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science, Volume 366 October 2019, DOI: 10.1126/science.aaw5949.