Results 91 to 100 of about 1,722,078 (332)

Testing the Interacting Dark Energy Model with Cosmic Microwave Background Anisotropy and Observational Hubble Data

Entropy, 2017
The coupling between dark energy and dark matter provides a possible approach to mitigate the coincidence problem of the cosmological standard model. In this paper, we assumed the interacting term was related to the Hubble parameter, energy density of ...
Weiqiang Yang, Lixin Xu, Hang Li, Yabo Wu, Jianbo Lu   +4 more
doaj   +1 more source

Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter

, 2006
Cluster number counts can be used to test dark energy models. We investigate dark energy candidates which are coupled to dark matter. We analyze the cluster number counts dependence on the amount of dark matter coupled to dark energy.
Amendola, Amendola, Amendola, Annis, Arbey, Bagla, Bahcall, Barreiro, Barrow, Bertolami, Bond, Brax, Brax, Brookfield, Carroll, Carroll, Causse, Clifton, Copeland, D. F. Mota, Damour, Damour, Doran, Dvali, Ellis, Farrar, Ferreira, Freese, Governato, Gross, Haiman, Holden, Horellou, Jassal, Jenkins, Khoury, Khoury, Lacey, Le Delliou, Lima, Lima, Lopes, M. Manera, Ma, Mainini, Maor, Mota, Mota, Mota, Multamaki, Nunes, Padmanabhan, Padmanabhan, Padmanabhan, Perlmutter, Press, Ratra, Ratra, Riess, Riess, Ruhl, Sarkar, Schuecker, Sheth, Solevi, Spergel, Springel, Steinhardt, Steinhardt, Sugiyama, Tocchini-Valentini, Viana, Wang, Wang, Wetterich, Wetterich, Wetterich, Zehavi, Zlatev   +78 more
core   +3 more sources

DARK ENERGY, WITH SIGNATURES [PDF]

International Journal of Modern Physics D, 2010
We propose a class of simple dark energy models which predict a late-time dark radiation component and a distinctive time-dependent equation of state w(z) for redshift z < 3. The dark energy field can be coupled strongly enough to standard model particles to be detected in colliders, and the model requires only modest additional particle content ...
Sourish Dutta, Stephen D. H. Hsu, Robert J. Scherrer   +2 more
openaire   +3 more sources

An approach for coherent periodogram averaging of tilt‐series data for improved contrast transfer function estimation

FEBS Open Bio, EarlyView.
The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley   +1 more source

Constraints on the Coupling between Dark Energy and Dark Matter from CMB data

, 2016
We investigate a phenomenological non-gravitational coupling between dark energy and dark matter, where the interaction in the dark sector is parameterized as an energy transfer either from dark matter to dark energy or the opposite.
Fornengo, Nicolao, Gariazzo, Stefano, Murgia, Riccardo   +2 more
core   +1 more source

Development of 4T1 breast cancer mouse model system for preclinical carbonic anhydrase IX studies

FEBS Open Bio, EarlyView.
Carbonic anhydrase IX (CAIX) is a well‐recognised therapeutic target and prognostic biomarker in cancer. We developed and characterised a robust murine breast cancer model system that is suitable for CAIX studies in vitro and in vivo—it comprises both CAIX‐positive and CAIX‐negative controls and provides a solid platform for the comprehensive ...
Zane Kalniņa, Ilva Liekniņa, Svetlana Koteloviča, Ramona Petrovska, Gediminas Žvinys, Agne Petrosiute, Asta Zubrienė, Matīss Toms Laugalis, Vendija Skeltona, Juris Jansons, Madara Kreishmane, Edita Čapkauskaitė, Daumantas Matulis, Kaspars Tārs   +13 more
wiley   +1 more source

Dark Energy: The Shadowy Reflection of Dark Matter?

Entropy, 2016
In this article, we review a series of recent theoretical results regarding a conventional approach to the dark energy (DE) concept. This approach is distinguished among others for its simplicity and its physical relevance.
Kostas Kleidis, Nikolaos K. Spyrou
doaj   +1 more source

Dark energy and key physical parameters of clusters of galaxies

, 2012
We study physics of clusters of galaxies embedded in the cosmic dark energy background. Under the assumption that dark energy is described by the cosmological constant, we show that the dynamical effects of dark energy are strong in clusters like the ...
A. Chernin, A. D. Chernin, A.D. Chernin, A.D. Chernin, A.D. Chernin, A.D. Chernin, A.D. Chernin, A.G. Riess, D.N. Spergel, E. Abdalla, E.B. Gliner, G. S. Bisnovatyi-Kogan, G.G. Byrd, G.L. Hoffman, G.S. Bisnovatyi-Kogan, I.D. Karachentsev, I.D. Karachentsev, J. Einasto, J.-H. He, J.F. Navarro, L.A. Kofman, P. Creminelli, P. Creminelli, P. Creminelli, P. Teerikorpi, P. Teerikorpi, P. Teerikorpi, R.B. Tully, S. Perlmutter, T. Ekholm, T. Ekholm, V.A. Antonov, Y.V. Baryshev   +32 more
core   +1 more source

Pole dark energy [PDF]

Physical Review D, 2020
Theories with a pole in the kinetic term have been used to great effect in studying inflation, owing to their quantum stability and attractor properties. We explore the use of such pole kinetic terms in dark energy theories, finding an interesting link between thawing and freezing models, and the possibility of enhanced plateaus with ``superattractor''-
openaire   +3 more sources

Knockout of the mitoribosome rescue factors Ict1 or Mtrfr is viable in zebrafish but not mice: compensatory mechanisms underlying each factor's loss

FEBS Open Bio, EarlyView.
Mitochondria contain two mitoribosome rescue factors, ICT1 and MTRFR (C12orf65). ICT1 also functions as a mitoribosomal protein in mice and humans, and its loss is lethal. Although Mtrfr knockout mice could not be generated, knockout zebrafish lines for ict1 and mtrfr were established.
Nobukazu Nameki, Chika Tomisawa, Soichiro Hoshino, Hidehiko Shimizu, Masashi Abe, Sho Arai, Kanako Kuwasako, Naoki Asakawa, Yusuke Inoue, Takuro Horii, Izuho Hatada, Masakatsu Watanabe   +11 more
wiley   +1 more source