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Cited by 1,758Cosmology and Gravitation TheoriesGamma-ray bursts and supernovaeGalaxies: Formation, Evolution, Phenomena

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New Hubble Space Telescope Discoveries of Type Ia Supernovae at z≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy

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Riess, Adam G., Strolger, Louis‐Gregory, Casertano, Stefano, Ferguson, Henry C., Mobasher, Bahram, Gold, Ben, Challis, Peter J., Filippenko, Alexei V., Jha, Saurabh, Li, Weidong, Tonry, John, Foley, Ryan, Kirshner, Robert P., Dickinson, Mark, MacDonald, Emily, Eisenstein, Daniel, Livio, Mario, Younger, Josh, Xu, Chun, Dahlen, Tomas, Stern, Daniel·2007·The Astrophysical Journal
DOI 10.1086/510378
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Abstract

We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope ( HST ) and have used them to trace the history of cosmic expansion over the last 10 billion yr. These objects, which include 13 spectroscopically confirmed SNe Ia at z ≥ 1, were discovered during 14 epochs of reimaging of the GOODS fields North and South over 2 yr with the Advanced Camera for Surveys on HST . Together with a recalibration of our previous HST -discovered SNe Ia, the full sample of 23 SNe Ia at z ≥ 1 provides the highest redshift sample known. Combining these data with previous SN Ia data sets, we measured H ( z ) at discrete, uncorrelated epochs, reducing the uncertainty of H ( z > 1) from 50% to under 20%, strengthening the evidence for a cosmic jerk—the transition from deceleration in the past to acceleration in the present. The unique leverage of the HST high-redshift SNe Ia provides the first meaningful constraint on the dark energy equation-of-state parameter at z ≥ 1. The result remains consistent with a cosmological constant [ w ( z ) = −1] and rules out rapidly evolving dark energy ( dw / dz ≫ 1). The defining property of dark energy, its negative pressure, appears to be present at z > 1, in the epoch preceding acceleration, with ~98% confidence in our primary fit. Moreover, the z > 1 sample-averaged spectral energy distribution is consistent with that of the typical SN Ia over the last 10 Gyr, indicating that any spectral evolution of the properties of SNe Ia with redshift is still below our detection threshold.

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Research works printed but not linked: 12

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  2. Bond J. R., 1997, MNRAS, 291, L33
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Metadata

Authors
Riess, A. G., Strolger, L., Casertano, S., Ferguson, H. C., Mobasher, B., Gold, B., Challis, P. J., Filippenko, A. V., Jha, S., Li, W., Tonry, J., Foley, R., Kirshner, R. P., Dickinson, M., MacDonald, E., Eisenstein, D., Livio, M., Younger, J., Xu, C., Dahlen, T., & Stern, D.
Affiliations
  • Space Telescope Science Institute (US)
  • Western Kentucky University (US)
  • Johns Hopkins University (US)
  • Center for Astrophysics Harvard & Smithsonian (US)
  • University of California, Berkeley (US)
  • University of Hawaiʻi at Mānoa (US)
  • University of Arizona (US)
  • California Institute of Technology (US)
ORCID
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2007-04-10
Volume
659
Issue
1
Pages
98-121
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/510378
OpenAlex
W2099827831
Cited by
1,758
References
101
Citations by year
2026: 28 · 2025: 51 · 2024: 75 · 2023: 64 · 2022: 68 · 2021: 60 · 2020: 76 · 2019: 57 · 2018: 67 · 2017: 63 · 2016: 77 · 2015: 65 · 2014: 87 · 2013: 104 · 2012: 108
FWCI
116.60
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • National Aeronautics and Space Administration
  • W. M. Keck Foundation
  • California Institute of Technology
  • McMaster University
  • Space Telescope Science Institute
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Gamma-ray bursts and supernovae
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
Keywords
Type Ia supernovae, high-redshift supernovae, dark energy, dark energy equation of state, cosmic acceleration, spectral energy distribution, GOODS fields, cosmological constant

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