Results 1 to 10 of about 351,980 (147)

Information Dark Energy Can Resolve the Hubble Tension and Is Falsifiable by Experiment

Entropy, 2022
We consider the role information energy can play as a source of dark energy. Firstly, we note that if stars and structure had not formed in the universe, elemental bits of information describing the attributes of particles would have exhibited properties
Michael Paul Gough
doaj   +3 more sources

The dark matter and dark energy [PDF]

SHS Web of Conferences, 2023
The dark matter and dark energy are one of the biggest challenges facing contemporary physics and astronomy. Dark energy and dark matter play an important role the universe.
Wu Yumiao
doaj   +1 more source

Using Dark Energy Explorers and Machine Learning to Enhance the Hobby–Eberly Telescope Dark Energy Experiment

The Astrophysical Journal, 2023
Abstract We present analysis using a citizen science campaign to improve the cosmological measures from the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX). The goal of HETDEX is to measure the Hubble expansion rate, H(z), and angular diameter distance, D A(z), at z = 2.4, each to percent-level accuracy.
Lindsay R. House, Karl Gebhardt, Keely Finkelstein, Erin Mentuch Cooper, Dustin Davis, Robin Ciardullo, Daniel J Farrow, Steven L. Finkelstein, Caryl Gronwall, Donghui Jeong, L. Clifton Johnson, Chenxu Liu, Benjamin P. Thomas, Gregory Zeimann   +13 more
openaire   +5 more sources

Reducing zero-point systematics in dark energy supernova experiments [PDF]

Astroparticle Physics, 2011
We study the effect of filter zero-point uncertainties on future supernova dark energy missions. Fitting for calibration parameters using simultaneous analysis of all Type Ia supernova standard candles achieves a significant improvement over more traditional fit methods.
Faccioli, Lorenzo, Kim, Alex G, Miquel, Ramon, Bernstein, Gary, Bonissent, Alain, Brown, Matthew, Carithers, William, Christiansen, Jodi, Connolly, Natalia, Deustua, Susana, Gerdes, David, Gladney, Larry, Kushner, Gary, Linder, Eric, McKee, Shawn, Mostek, Nick, Shukla, Hemant, Stebbins, Albert, Stoughton, Chris, Tucker, David   +19 more
openaire   +5 more sources

Searching for dark matter signals in timing spectra at neutrino experiments

Journal of High Energy Physics, 2022
The sensitivity to dark matter signals at neutrino experiments is fundamentally challenged by the neutrino rates, as they leave similar signatures in their detectors.
Bhaskar Dutta, Doojin Kim, Shu Liao, Jong-Chul Park, Seodong Shin, Louis E. Strigari, Adrian Thompson   +6 more
doaj   +1 more source

Experiment to Detect Dark Energy Forces Using Atom Interferometry [PDF]

Physical Review Letters, 2019
6 pages, 4 ...
D. O. Sabulsky, I. Dutta, E. A. Hinds, B. Elder, C. Burrage, Edmund J. Copeland   +5 more
openaire   +3 more sources

Spectroscopic needs for imaging dark energy experiments [PDF]

Astroparticle Physics, 2015
Ongoing and near-future imaging-based dark energy experiments are critically dependent upon photometric redshifts (a.k.a. photo-z's): i.e., estimates of the redshifts of objects based only on flux information obtained through broad filters. Higher-quality, lower-scatter photo-z's will result in smaller random errors on cosmological parameters; while ...
Newman, J., Abate, A., Abdalla, F., Allam, S., Allen, S., Ansari, R., Bailey, S., Barkhouse, W., Beers, T., Blanton, M., Brodwin, M., Brownstein, J., Brunner, R., Carrasco-Kind, M., Cervantes-Cota, J., Cheu, E., Chisari, E., Colless, M., Comparat, J., Coupon, J., Cunha, C., de La Macorra, A., Dell'Antonio, I., Frye, B., Gawiser, E., Gehrels, N., Grady, K., Hagen, A., Hall, P., Hearin, A., Hildebrandt, H., Hirata, C., Ho, S., Honscheid, K., Huterer, D., Ivezic, Z., Kneib, J. -P., Kruk, J., Lahav, O., Mandelbaum, R., Marshall, J., Matthews, D., Ménard, B., Miquel, R., Moniez, M., Moos, W., Moustakas, J., Papovich, C., Peacock, J., Park, C., Rhodes, J., Ricol, J.S., Sadeh, I., Slozar, A., Schmidt, S., Stern, D., Tyson, T., von Der Linden, A., Wechsler, R., Wood-Vasey, W., Zentner, A., Myers, A.D., Rahman, M.   +62 more
openaire   +2 more sources

Heavy neutral leptons at beam dump experiments of future lepton colliders

Journal of High Energy Physics, 2023
A new beam dump experiment that utilizes the beam of future high energy electron-positron colliders could be an excellent avenue to search for dark sector particles due to its unprecedented high energy and intensity.
Pierce Giffin, Stefania Gori, Yu-Dai Tsai, Douglas Tuckler   +3 more
doaj   +1 more source

Direct detection of pseudo-Nambu-Goldstone dark matter with light mediator

Physics Letters B, 2021
It has been found that a pseudo-Nambu-Goldstone boson dark matter suppresses the amplitude for elastic scattering with nuclei in non-relativistic limit, and thus can naturally evade the strong constraint of dark matter direct detection experiments.
Yoshihiko Abe, Takashi Toma
doaj   +1 more source

Investigating dark energy experiments with principal components [PDF]

Journal of Cosmology and Astroparticle Physics, 2009
A significantly expanded version with an added PCA for weak lensing, a new detailed discussion of the correlation prior proposed in this work, and a new discussion outlining the differences between the Bayesian and the frequentist approaches to reconstructing w(z). Matches the version accepted to JCAP.
Crittenden, Robert, Pogosian, L., Zhao, Gong-bo   +2 more
openaire   +4 more sources