Results 21 to 30 of about 1,630,167 (297)

An r−process macronova/kilonova in GRB 060614: evidence for the merger of a neutron star-black hole binary

open access: yesEPJ Web of Conferences, 2016
After the jet break at t ~ 1.4 days, the optical afterglow emission of the long-short burst GRB 060614 can be divided into two components. One is the power-law decaying forward shock afterglow emission.
Jin Zhi-Ping, Fan Yi-Zhong, Wei Da-Ming
doaj   +1 more source

A real triplet-singlet extended Standard Model: dark matter and collider phenomenology

open access: yesJournal of High Energy Physics, 2021
We examine the collider and dark matter phenomenology of the Standard Model extended by a hypercharge-zero SU(2) triplet scalar and gauge singlet scalar.
Nicole F. Bell   +4 more
doaj   +1 more source

The Possibility of Mirror Planet as Planet Nine in the Solar System

open access: yesUniverse, 2022
A series of dynamical anomalies in the orbits of distant trans-Neptunian objects points to a new celestial body (usually named Planet Nine) in the solar system.
Pei Wang   +4 more
doaj   +1 more source

Dark Matter [PDF]

open access: yesBrazilian Journal of Physics, 2011
Abstract I give a review of the development of the concept of dark matter. The dark matter story passed through several stages from a minor observational puzzle to a major challenge for theory of elementary particles. Modern data suggest that dark matter is the dominant matter component in the Universe, and that it consists of some ...
openaire   +6 more sources

Energy-releasing Process for the 2013 May 13 X1.7 Limb Flare: A Continued Study

open access: yesThe Astrophysical Journal, 2023
In this paper, we reanalyze the X1.7 class limb flare that occurred on 2013 May 13 (SOL2013-05-13T01:56 UT), concentrating on the energy-releasing process using microwave observations mainly made by Nobeyama and X-ray observations made by RHESSI.
Jinhua Shen   +5 more
doaj   +1 more source

DARK MATTER INTERFERENCE [PDF]

open access: yesModern Physics Letters A, 2012
We study different patterns of interference in WIMP-nuclei elastic scattering that can accommodate the DAMA and CoGeNT experiments via an isospin violating ratio fn/fp = -0.71. We study interference between the following pairs of mediators: Z and Z′, Z′ and Higgs, and two Higgs fields. We show under what conditions interference works.
Del Nobile, Eugenio   +3 more
openaire   +2 more sources

Dark sector unifications: Dark matter-phantom energy, dark matter - constant w dark energy, dark matter-dark energy-dark matter

open access: yesPhysics Letters B, 2019
The paper brings a novel approach to unification of dark matter and dark energy in terms of a cosmic fluid. A model is introduced in which the cosmic fluid speed of sound squared is defined as a function of its equation of state (EoS) parameter. It is shown how logarithmic part of this function results in dynamical regimes previously not observed in ...
Dalibor Perković, Hrvoje Štefančić
openaire   +3 more sources

‘Excess’ of primary cosmic ray electrons

open access: yesPhysics Letters B, 2015
With the accurate cosmic ray (CR) electron and positron spectra (denoted as Φe− and Φe+, respectively) measured by AMS-02 Collaboration, the difference between the electron and positron fluxes (i.e., ΔΦ=Φe−−Φe+), dominated by the propagated primary ...
Xiang Li   +7 more
doaj   +1 more source

One-Minute Quasi-Periodic Pulsations during an M-Class Solar Flare

open access: yesUniverse, 2022
We study the Quasi-Periodic Pulsations (QPPs) of an M4.4 class solar flare, which occurred in active region NOAA 11165 on 8 March 2011. With the Fast Fourier Transform (FFT) method, we decompose the flare light curve into fast- and slowly-varying ...
Fanpeng Shi, Dong Li, Zongjun Ning
doaj   +1 more source

Charming dark matter [PDF]

open access: yesJournal of High Energy Physics, 2017
46 pages, 22 figures.
Thomas Jubb   +2 more
openaire   +6 more sources

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