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6 papers · 2 filters
Dark Energy-Dark Matter Interaction from the Abell Cluster A586
Orfeu Bertolami, Francisco Gil Pedro, Morgan Le Delliou
We find that deviation from the virial equilibrium of the Abell Cluster A586 yields evidence of the interaction between dark matter and dark energy. We argue that this interaction…
Intergalactic absorption and blazar gamma-ray spectra
Massimo Persic, Alessandro De Angelis
The distribution of TeV spectral slopes versus redshift for currently known TeV blazars (16 sources with z<0.21, and one with z>0.25) is essentially a scatter plot with hardly any…
Magnetized strange quark matter and magnetized strange quark stars
R. Gonzalez Felipe, A. Perez Martinez, H. Perez Rojas +1
Strange quark matter could be found in the core of neutron stars or forming strange quark stars. As is well known, these astrophysical objects are endowed with strong magnetic fiel…
Do f(R) theories matter?
O. Bertolami, J. Paramos
We consider a modified action functional with a non-minimum coupling between the scalar curvature and the matter Lagrangian, and study its consequences on stellar equilibrium. Part…
First season QUaD CMB temperature and polarization power spectra
QUaD Collaboration, P. Ade, J. Bock +27
QUaD is a bolometric CMB polarimeter sited at the South Pole, operating at frequencies of 100 and 150 GHz. In this paper we report preliminary results from the first season of oper…
Dark Energy-Dark Matter Interaction and putative violation of the Equivalence Principle from the Abell Cluster A586
O. Bertolami, F. Gil Pedro, M. Le Delliou
We show that the Abell Cluster A586 exhibits evidence of the interaction between dark matter and dark energy and argue that this interaction implies a violation of the Equivalence…