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17 papers · 2 filters
General treatment for dark energy thermodynamics
H. H. B. Silva, R. Silva, R. S. Gonçalves +2
In this work we discuss a general approach for the dark energy thermodynamics considering a varying equation of state (EoS) parameter of the type and taking into ac…
Constraints on a CDM model from strong gravitational lensing and updated Hubble parameter measurements
Yun Chen, Chao-Qiang Geng, Shuo Cao +2
We constrain the scalar field dark energy model with an inverse power-law potential, i.e., (), from a set of recent cosmological observations by compiling…
Observational constraint on the interacting dark energy models including the Sandage-Loeb test
Ming-Jian Zhang, Wen-Biao Liu
Two types of interacting dark energy models are investigated using the type Ia supernova (SNIa), observational data (OHD), cosmic microwave background (CMB) shift parameter…
Supermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign
P. Du, C. Hu, K. -X. Lu +7
We report first results from a large project to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). Such objects may be different from other AGNs in…
Nonparametric reconstruction of dynamical dark energy via observational Hubble parameter data
Hao-Ran Yu, Shuo Yuan, Tong-Jie Zhang
We study the power of current and future observational Hubble parameter data (OHD) on non-parametric estimations of the dark energy equation of state, . We propose a new meth…
Method for Direct Measurement of Cosmic Acceleration by 21-cm Absorption Systems
Hao-Ran Yu, Tong-Jie Zhang, Ue-Li Pen
So far there is only indirect evidence that the Universe is undergoing an accelerated expansion. The evidence for cosmic acceleration is based on the observation of different objec…