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11 papers · 2 filters
What is the probability that direct detection experiments have observed Dark Matter?
Nassim Bozorgnia, Thomas Schwetz
In Dark Matter direct detection we are facing the situation of some experiments reporting positive signals which are in conflict with limits from other experiments. Such conclusion…
Primordial star clusters at extreme magnification
Erik Zackrisson, Juan Gonzalez, Simon Eriksson +4
Gravitationally lensed galaxies with magnification ~10-100 are routinely detected at high redshifts, but magnifications significantly higher than this are hampered by a combination…
Extending the supernova Hubble diagram to z~1.5 with the Euclid space mission
P. Astier, C. Balland, M. Brescia +25
We forecast dark energy constraints that could be obtained from a new large sample of Type Ia supernovae where those at high redshift are acquired with the Euclid space mission. We…
Cosmological viability of massive gravity with generalized matter coupling
Adam R. Solomon, Jonas Enander, Yashar Akrami +3
There is a no-go theorem forbidding flat and closed FLRW solutions in massive gravity on a flat reference metric, while open solutions are unstable. Recently it was shown that this…
The effect of non-Gaussianity on error predictions for the Epoch of Reionization (EoR) 21-cm power spectrum
Rajesh Mondal, Somnath Bharadwaj, Suman Majumdar +2
The Epoch of Reionization (EoR) 21-cm signal is expected to become increasingly non-Gaussian as reionization proceeds. We have used semi-numerical simulations to study how this aff…
Cosmic expansion histories in massive bigravity with symmetric matter coupling
Jonas Enander, Adam R. Solomon, Yashar Akrami +1
We study the cosmic expansion history of massive bigravity with a viable matter coupling which treats both metrics on equal footing. We derive the Friedmann equation for the effect…