Search Publications
Candidate detection of GRB221009A by Yangbajing muon telescope
Nozzoli, F.
Long gamma-ray bursts (GRBs) can be generated by the collapse of a rapidly rotating massive star into a black hole and are the brightest known explosive events in the Universe. GRB221009A is the most energetic gamma-ray burst ever recorded, providing delayed detection of very high energy photons that challenge the standard propagation mechanisms, …
Dual MeV gamma-ray and dark matter observatory - GRAMS Project
Odaka, Hirokazu; Aramaki, Tsuguo; Karagiorgi, Georgia +1 more
GRAMS (Gamma-Ray and AntiMatter Survey) is a novel project that can simultaneously target both astrophysical observations with MeV gamma rays and an indirect dark matter search with antimatter. The GRAMS instrument is designed with a cost-effective, large-scale LArTPC (Liquid Argon Time Projection Chamber) detector surrounded by plastic scintillat…
Probing a steep EoS for dark energy with latest observations
Jaber, Mariana; Macorra, Axel de la
We present a parametrization for the Dark Energy Equation of State "EoS" which has a rich structure, performing a transition at pivotal redshift zT between the present day value w0 to an early time wi =wa +w0 ≡ w(z ≫ 0) with a steepness given in terms of q parameter. The proposed parametrizati…
Measuring the Galactic Cosmic Ray flux with the LISA Pathfinder radiation monitor
Mendes, L.; Russano, G.; Lloro, I. +76 more
Test mass charging caused by cosmic rays will be a significant source of acceleration noise for space-based gravitational wave detectors like LISA. Operating between December 2015 and July 2017, the technology demonstration mission LISA Pathfinder included a bespoke monitor to help characterise the relationship between test mass charging and the l…
Actuation crosstalk in free-falling systems: Torsion pendulum results for the engineering model of the LISA pathfinder gravitational reference sensor
Grado, A.; Cavalleri, A.; Dolesi, R. +17 more
In this paper we report on measurements on actuation crosstalk, relevant to the gravitational reference sensors for LISA Pathfinder and LISA. In these sensors, a Test Mass (TM) falls freely within a system of electrodes used for readout and control. These measurements were carried out on ground with a double torsion pendulum that allowed us to est…
On the concordance of cosmological data in the case of the generalized Chaplygin gas
Aurich, R.; Lustig, S.
The generalized Chaplygin gas cosmology provides a prime example for the class of unified dark matter models, which substitute the two dark components of the standard cosmological ΛCDM concordance model by a single dark component. The equation of state of the generalized Chaplygin gas is characterised by a parameter α such that the standard ΛCDM m…
Borexino's search for low-energy neutrino and antineutrino signals correlated with gamma-ray bursts
Wang, H.; Meyer, M.; Smirnov, O. +98 more
A search for neutrino and antineutrino events correlated with 2350 gamma-ray bursts (GRBs) is performed with Borexino data collected between December 2007 and November 2015. No statistically significant excess over background is observed. We look for electron antineutrinos (νbare) that inverse beta decay on protons with energies from 1.…
Neutrino physics from the cosmic microwave background and large scale structure
Hu, W.; Bond, J. R.; Borrill, J. +74 more
This is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the Cosmic Frontier of the Division of Particles and Fields Community Summer Study long-term planning exercise. Experiments planned and underway are prepared to study the cosmological neutrino background in det…
Growth of cosmic structure: Probing dark energy beyond expansion
Mandelbaum, Rachel; Sehgal, Neelima; Connolly, Andrew +18 more
The quantity and quality of cosmic structure observations have greatly accelerated in recent years, and further leaps forward will be facilitated by imminent projects. These will enable us to map the evolution of dark and baryonic matter density fluctuations over cosmic history. The way that these fluctuations vary over space and time is sensitive…
Inflation physics from the cosmic microwave background and large scale structure
Hu, W.; Bond, J. R.; Borrill, J. +91 more
Fluctuations in the intensity and polarization of the cosmic microwave background (CMB) and the large-scale distribution of matter in the universe each contain clues about the nature of the earliest moments of time. The next generation of CMB and large-scale structure (LSS) experiments are poised to test the leading paradigm for these earliest mom…