Results 41 to 50 of about 6,544,802 (296)

What’s the Difference? The Potential for Convolutional Neural Networks for Transient Detection without Template Subtraction

The Astronomical Journal, 2023
We present a study of the potential for convolutional neural networks (CNNs) to enable separation of astrophysical transients from image artifacts, a task known as “real–bogus” classification, without requiring a template-subtracted (or difference) image,
Tatiana Acero-Cuellar, Federica Bianco, Gregory Dobler, Masao Sako, Helen Qu, The LSST Dark Energy Science Collaboration   +5 more
doaj   +1 more source

Unified Dark Matter scalar field models with fast transition [PDF]

, 2011
We investigate the general properties of Unified Dark Matter (UDM) scalar field models with Lagrangians with a non-canonical kinetic term, looking specifically for models that can produce a fast transition between an early Einstein-de Sitter CDM-like era
Bertacca, Daniele, Piattella, Oliver F., Davide Pietrobon, Bruni, Marco, Oliver F Piattella, Piattella, O., Pietrobon, Davide, Marco Bruni, PIATTELLA O, Daniele Bertacca   +9 more
core   +1 more source

Dark energy in the dark ages [PDF]

Astroparticle Physics, 2006
6 pages, 5 figures; figure added, minor edits to match Astropart.Phys ...
openaire   +4 more sources

Dark energy: Staring into darkness [PDF]

Nature, 2016
The path to understanding dark energy begins with a single question: has it always been the same throughout the history of the Universe?
openaire   +2 more sources

Thermal dark energy [PDF]

Physical Review D, 2020
16 pages, 8 ...
Edward Hardy, Susha Parameswaran
openaire   +3 more sources

The Dark Energy Survey [PDF]

, 2005
We describe the Dark Energy Survey (DES), a proposed optical-near infrared survey of 5000 sq. deg of the South Galactic Cap to ~24th magnitude in SDSS griz, that would use a new 3 sq.
The Dark Energy Survey Collaboration
core   +1 more source

Dipolar dark matter and dark energy [PDF]

Physical Review D, 2009
In previous work [L. Blanchet and A. Le Tiec, Phys. Rev. D 78, 024031 (2008)], a model of dark matter and dark energy based on the concept of gravitational polarization was investigated. This model was shown to recover the concordance cosmological scenario (Lambda-CDM) at cosmological scales, and the phenomenology of the modified Newtonian dynamics ...
Blanchet, Luc, Le Tiec, Alexandre
openaire   +2 more sources

Designing a space-based galaxy redshift survey to probe dark energy [PDF]

, 2010
A space-based galaxy redshift survey would have enormous power in constraining dark energy and testing general relativity, provided that its parameters are suitably optimized.
Cimatti, A., James E. Geach, Geach, J.E., Carbone, Carmelita, Wang Yun, Orsi, A., Samushia, L., Garilli, Bianca, Franzetti, P., Zamorani, Giovanni, Paolo Franzetti, Rosati Piero, Rosati, P., Mukherjee, P., Zamorani Giovanni, Mukherjee Pia, Garilli Bianca, Piero Rosati, Cimatti A, Pia Mukherjee, Wang Y, Lacey Cedric G., Garilli B, Baugh CM, Geach, James E., Percival Will, Mukherjee, Pia, Rosati, Piero, Lacey, C.G., Percival, Will, Carmelita Carbone, Geach James E., Zamorani, G., Lacey, Cedric G., Franzetti, Paolo, Carbone, C., Orsi A, Percival, W., Mukherjee P, Wang, Yun, Wang, Y., Majerotto E, Guzzo L, Baugh, C.M., Samushia, Lado, Franzetti P, Will Percival, Orsi, Alvaro, Baugh, Carlton M., Luigi Guzzo, Guzzo, L., Percival W, Guzzo, Luigi, Samushia L, Samushia Lado, Lado Samushia, Carbone C, Franzetti Paolo, Majerotto, Elisabetta, Cimatti, Andrea, Majerotto Elisabetta, Geach JE, Andrea Cimatti, Alvaro Orsi, Orsi Alvaro, Garilli, B., Baugh Carlton M., Lacey CG, Giovanni Zamorani, Yun Wang, Majerotto, E., Bianca Garilli, Cedric G. Lacey, Guzzo Luigi, Elisabetta Majerotto, Carlton M. Baugh, Zamorani G.   +76 more
core   +1 more source

Modified Gravity and Dark Energy models Beyond w(z)CDM Testable by LSST [PDF]

, 2019
One of the main science goals of the Large Synoptic Survey Telescope (LSST) is to uncover the nature of cosmic acceleration. In the base analysis, possible deviations from the Lambda-Cold-Dark-Matter (λCDM) background evolution will be probed by fitting ...
Linder, Eric, Ferreira, Pedro G., Leonard, C. Danielle, Lin, Weikang, Valogiannis, Georgios, Bull, Philip; id_orcid, Pedersen, Eske M., Baker, Tessa, Blazek, Jonathan, Pardo, Kris, Ishak, Mustapha   +10 more
core   +7 more sources

Thermodynamic parametrization of dark energy [PDF]

, 2022
We propose a model-independent parametrization of dark energy motivated by thermodynamics. To this aim, we consider Pad\'e polynomials to reconstruct the form of deceleration parameter adequate to describe different epochs of cosmic history and ...
D’Agostino, Rocco, Salvatore Capozziello, Luongo, Orlando, Orlando Luongo, Capozziello, Salvatore, Rocco D'Agostino, D'Agostino, Rocco, Rocco D’Agostino   +7 more
core   +1 more source