Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure

Journal Article · Thu Jul 01 00:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.670· OSTI ID:365887

Perlmutter, S ^[1]; Turner, M S; Turner, M S ^[2]; Turner, M S ^[3]; White, M; White, M ^[4]

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1. Institute for Nuclear and Particle Astrophysics, E.O. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
2. Department of Physics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433 (United States)
3. NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States)
4. Department of Physics, University of Illinois at Urbana Champaign, Urbana, Illinois 61801 (United States)

Measurements of the distances to type Ia supernovae have produced strong evidence that the expansion of the Universe is accelerating, implying the existence of a nearly uniform component of dark energy with negative pressure. We show that constraints to this mysterious component based upon large-scale structure nicely complement the SN Ia data, and that together they require {Omega}{sub X}={rho}{sub X}/{rho}{sub crit}{element_of}(0.6,thinsp0.7) and w=p{sub X}/{rho}{sub X}{lt}{minus}0.6 (95{percent} C.L.), for the favored flat Universe. Other cosmological data support this conclusion. The simplest explanation, a cosmological constant, is consistent with this, while some of the other possibilities are not. {copyright} {ital 1999} {ital The American Physical Society }

• OSTI ID: 365887
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 83; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COSMOLOGICAL CONSTANT
COSMOLOGICAL MODELS
COSMOLOGY
GRAVITATION
INFLATIONARY UNIVERSE
LIMITING VALUES
NONLUMINOUS MATTER
RED SHIFT
SUPERNOVAE