Results 11 to 20 of about 9,248,821 (298)

Optimizing New Dark Energy Experiments [PDF]

, 2013
Next generation “Stage IV” dark energy experiments under design during this grant, and now under construction, will enable the determination of the properties of dark energy and dark matter to unprecedented precision using multiple complementary probes ...
Tyson, J. Anthony
core   +4 more sources

Spectroscopic Needs for Imaging Dark Energy Experiments: Photometric Redshift Training and Calibration

, 2013
Large sets of objects with spectroscopic redshift measurements will be needed for imaging dark energy experiments to achieve their full potential, serving two goals:_training_, i.e., the use of objects with known redshift to develop and optimize ...
"Dark Energy and CMB" working group
core   +4 more sources

Optimizing New Dark Energy Experiments - Final Scientific Report [PDF]

, 2012
This is the final scientific report for the University of Pittsburgh portion of the collaborative grant, 'Optimizing New Dark Energy ...
Newman, Jeffrey A.
core   +3 more sources

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

Limits on spin-dependent WIMP-proton cross-sections using the DRIFT-IId directional dark matter detector [PDF]

, 2011
The nature of dark matter remains one of the biggest questions in physics today. Weakly Interacting Massive Particles (WIMPs) are a particularly well motivated candidate for the missing matter that makes up 85% of the mass of the Universe.
Pipe, Mark
core   +6 more sources

DEMON: a proposal for a satellite-borne experiment to study dark matter and dark energy [PDF]

SPIE Proceedings, 2006
12 pages, 3 figures, accepted for publication in the SPIE conference ...
Berciano Alba, A., Borges de Silva, P., Eichelberger, H., Giovacchini, F., Godolt, M., Hasinger, G., Lerchster, M., Lusset, V., Mattana, F., Mellier, Y., Michalowski, M., Monteserin-Sanchez, C., Noviello, F., Persson, C., Santovincenzo, A., Schneider, P., Zhang, M., Östman, L.   +17 more
openaire   +3 more sources

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   +3 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

Artwork contributed to publication 'Dark Mountain' (issue 21) [PDF]

, 2022
Artwork contributed to publication 'Dark Mountain' (issue 21) "Our twenty-first issue revolves around the theme of confluence. The image of watersmeet, of two streams merging into one, has long had sacred connotations, as shown by the votive ...
Carter, Justin
core   +5 more sources