Publications (50)
Kink solitons in DNA
S. ZdravkoviÄ, M. V. SatariÄ, M. Daniel
We here examine the nonlinear dynamics of artificial homogeneous DNA chain relying on the plain-base rotator model. It is shown that such dynamics can exhibit kink and antikink sol…
Perturbed soliton excitations in DNA molecular chain
M. Daniel, V. Vasumathi
We study nonlinear dynamics of a periodic inhomogeneous DNA double helical chain under dynamic plane-base rotator model by considering angular rotation of bases in a plane normal t…
Science with the Cherenkov Telescope Array
The Cherenkov Telescope Array Consortium, :, B. S. Acharya +580
The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA i…
CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)
The CTA Consortium, :, A. Abchiche +1305
List of contributions from the CTA Consortium presented at the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands.
Perturbed soliton-like molecular excitations in a deformed DNA chain
V. Vasumathi, M. Daniel
We study the nonlinear dynamics of a deformed Deoxyribonucleic acid (DNA) molecular chain which is governed by a perturbed sine-Gordon equation coupled with a linear wave equation…
Multiwavelength Observations of 1ES 1959+650, One Year After the Strong Outburst of 2002
K. Gutierrez, H. M. Badran, S. M. Bradbury +33
In April-May 2003, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telesco…
Analytical soliton solution for the Landau-Lifshitz equation of one dimensional magnonic crystal
D. Giridharan, M. Daniel, P. Sabareesan
Nonlinear localized magnetic excitations in one dimensional magnonic crystal is investigated under periodic magntic field. The governing Landau-Lifshitz equation is transformed int…
First results on light readout from the 1-ton ArDM liquid argon detector for dark matter searches
C. Amsler, A. Badertscher, V. Boccone +38
ArDM-1t is the prototype for a next generation WIMP detector measuring both the scintillation light and the ionization charge from nuclear recoils in a 1-ton liquid argon target. T…
Design and construction of a new detector to measure ultra-low radioactive-isotope contamination of argon
The DarkSide Collaboration, C. E. Aalseth, S. Abdelhakim +328
Large liquid argon detectors offer one of the best avenues for the detection of galactic weakly interacting massive particles (WIMPs) via their scattering on atomic nuclei. The liq…
Dark matter annihilation and decay in dwarf spheroidal galaxies: The classical and ultrafaint dSphs
V. Bonnivard, C. Combet, M. Daniel +8
Dwarf spheroidal (dSph) galaxies are prime targets for present and future gamma-ray telescopes hunting for indirect signals of particle dark matter. The interpretation of the data…
Dynamics of Current and Field Driven Domain Wall Motion under the Influence of Transverse Magnetic Field
R. Arun, P. Sabareesan, M. Daniel
The dynamics of transverse Neel domain wall in a ferromagnetic nanostrip in the presence of driving field, current and transverse magnetic field is investigated by the Landau-Lifsh…
Nonlinear molecular excitations in a completely inhomogeneous DNA chain
M. Daniel, V. Vasumathi
We study the nonlinear dynamics of a completely inhomogeneous DNA chain which is governed by a perturbed sine-Gordon equation. A multiple scale perturbation analysis provides pertu…
Separating Ar from Ar by cryogenic distillation with Aria for dark matter searches
DarkSide Collaboration, P. Agnes, S. Albergo +309
The Aria project consists of a plant, hosting a 350 m cryogenic isotopic distillation column, the tallest ever built, which is currently in the installation phase in a mine shaft a…
Dark matter profiles and annihilation in dwarf spheroidal galaxies: prospectives for present and future gamma-ray observatories - I. The classical dSphs
A. Charbonnier, C. Combet, M. Daniel +8
Due to their large dynamical mass-to-light ratios, dwarf spheroidal galaxies (dSphs) are promising targets for the indirect detection of dark matter (DM) in gamma-rays. We examine…
Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)
The CTA Consortium, :, A. Abchiche +1387
List of contributions from the Cherenkov Telescope Array (CTA) Consortium presented at the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016), July 11-15,…
Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel
P. Agnes, I. Ahmad, S. Albergo +296
Dark matter lighter than 10 GeV/c encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50…
Quantifying structural damage from self-irradiation in a plutonium superconductor
C. H. Booth, E. D. Bauer, M. Daniel +5
The 18.5 K superconductor PuCoGa5 has many unusual properties, including those due to damage induced by self-irradiation. The superconducting transition temperature decreases sharp…
On a new approach to optical solitons in dielectric fibers
V. Veerakumar, M. Daniel
In this letter we describe a new and simple approach for modulating the electromagnetic wave propagating in a dielectric medium in the form of solitons by considering the torque de…
A general splitting formula for the spectral flow
M. Daniel, P. Kirk
We derive a decomposition formula for the spectral flow of a 1-parameter family of self-adjoint Dirac operators on an odd-dimensional manifold split along a hypersurface (…
Nuclear Magnetic Resonance and Magnetization Studies of the Ferromagnetic Ordering Temperature Suppression in Ru Deficient SrRuO3
Z. H. Han, J. I. Budnick, M. Daniel +7
The synthesis of SrRuO3 under high-pressure oxygen produces a nonstoichiometric form with randomly distributed vacancies on the Ru-sites, along with a significantly reduced ferroma…
Towards the Intensity Interferometry Stellar Imaging System
M. Daniel, W. J. de Wit, D. Dravins +4
The imminent availability of large arrays of large light collectors deployed to exploit atmospheric Cherenkov radiation for gamma-ray astronomy at more than 100GeV, motivates the g…
CTA contributions to the 33rd International Cosmic Ray Conference (ICRC2013)
The CTA Consortium, :, O. Abril +1102
Compilation of CTA contributions to the proceedings of the 33rd International Cosmic Ray Conference (ICRC2013), which took place in 2-9 July, 2013, in Rio de Janeiro, Brazil
SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range
The DarkSide collaboration, C. E. Aalseth, S. Abdelhakim +312
Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle…
Status of ArDM-1t: First observations from operation with a full ton-scale liquid argon target
ArDM Collaboration, J. Calvo, C. Cantini +23
ArDM-1t is the first operating ton-scale liquid argon detector for direct search of Dark Matter particles. Developed at CERN as Recognized Experiment RE18, the experiment has been…
Soliton-like base pair opening in a helicoidal DNA: An analogy with helimagnet and cholesterics
M. Daniel, V. Vasumathi
We propose a model for DNA dynamics by introducing the helical structure through twist deformation in analogy with the structure of helimagnet and cholesteric liquid crystal system…
DarkSide-20k: A 20 Tonne Two-Phase LAr TPC for Direct Dark Matter Detection at LNGS
C. E. Aalseth, F. Acerbi, P. Agnes +282
Building on the successful experience in operating the DarkSide-50 detector, the DarkSide Collaboration is going to construct DarkSide-20k, a direct WIMP search detector using a tw…
Multiwavelength Observations of LS I +61 303 with VERITAS, Swift and RXTE
VERITAS Collaboration, V. A. Acciari, E. Aliu +83
We present results from a long-term monitoring campaign on the TeV binary LSI +61 303 with VERITAS at energies above 500 GeV, and in the 2-10 keV hard X-ray bands with RXTE and Swi…
Local studies of the ferromagnetic ordering temperature suppression in SrRuO3
Z. H. Han, J. I. Budnick, M. Daniel +7
In order to gain insight into suppression of the ferromagnetic ordering temperature, local studies utilizing 99,101Ru zero-field spin-echo NMR, along with complimentary magnetizati…
Status of the ArDM Experiment: First results from gaseous argon operation in deep underground environment
ArDM Collaboration, A. Badertscher, F. Bay +26
The Argon Dark Matter (ArDM-1t) experiment is a ton-scale liquid argon (LAr) double-phase time projection chamber designed for direct Dark Matter searches. Such a device allows to…
Backgrounds and pulse shape discrimination in the ArDM liquid argon TPC
ArDM Collaboration, J. Calvo, C. Cantini +21
The ArDM experiment completed a single-phase commissioning run in 2015 with an active liquid argon target of nearly one tonne in mass. The analysis of the data and comparison to si…
Base pair opening and bubble transport in a DNA double helix induced by a protein molecule in a viscous medium
V. Vasumathi, M. Daniel
We study the nonlinear dynamics of a protein-DNA molecular system by treating DNA as a set of two coupled linear chains and protein in the form of a single linear chain sliding alo…
Prospects for CTA observations of the young SNR RX J1713.7-3946
The CTA Consortium, :, F. Acero +381
We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX~J1713.73946, a young supernova remnant (SNR) and one of the brightest sources ever discovere…
Effect of Transverse Magnetic Field on Dynamics of Current Driven Domain Wall Motion in the Presence of Spin-Hall Effect
R. Arun, P. Sabareesan, M. Daniel
Theoretically, we study the dynamics of a current induced domain wall in the bi-layer structure consists of a ferromagnetic layer and a non-magnetic metal layer with strong spin-or…
The dual-mirror Small Size Telescope for the Cherenkov Telescope Array
G. Pareschi, G. Agnetta, L. A. Antonelli +111
In this paper, the development of the dual mirror Small Size Telescopes (SST) for the Cherenkov Telescope Array (CTA) is reviewed. Up to 70 SST, with a primary mirror diameter of 4…
Cherenkov Telescope Array Contributions to the 35th International Cosmic Ray Conference (ICRC2017)
F. Acero, B. S. Acharya, V. AcÃn Portella +1137
List of contributions from the Cherenkov Telescope Array Consortium presented at the 35th International Cosmic Ray Conference, July 12-20 2017, Busan, Korea.
Impact of Current on Static and Kinetic Depinning Fields of Domain Wall in Ferromagnetic Nanostrip
R. Arun, P. Sabareesan, M. Daniel
The impact of current on static and kinetic depinning fields of a domain wall in an one dimensional ferromagnetic nanostrip is investigated by solving the Landau-Lifshitz-Gilbert e…
Magnetization Reversal in Ferromagnetic Film Through Solitons by Electromagnetic Field
V. Veerakumar, M. Daniel
We study the reversal of magnetization in an isotropic ferromagnetic film free from charges by exposing it to a circularly polarized electromagnetic (EM) field. The magnetization e…
Characterisation and Testing of CHEC-M - a camera prototype for the Small-Sized Telescopes of the Cherenkov Telescope Array
J. Zorn, R. White, J. J. Watson +42
The Compact High Energy Camera (CHEC) is a camera design for the Small-Sized Telescopes (SSTs; 4 m diameter mirror) of the Cherenkov Telescope Array (CTA). The SSTs are focused on…
AVOLAR. A high voltage generator for liquid argon time projection chambers
L. Romero, J. M. Cela, E. Sanchez Garcia +2
Some of the main neutrino oscillation and dark matter experiments have chosen time projection chambers (TPC) filled with liquid argon (LAr) as their technology for the next generat…
Measurement of the attenuation length of argon scintillation light in the ArDM LAr TPC
ArDM Collaboration, J. Calvo, C. Cantini +21
We report on a measurement of the attenuation length for the scintillation light in the tonne size liquid argon target of the ArDM dark matter experiment. The data was recorded in…
Observations and asteroseismic analysis of the rapidly pulsating hot B subdwarf PG 0911+456
S. K. Randall, E. M. Green, V. Van Grootel +11
The principal aim of this project is to determine the structural parameters of the rapidly pulsating subdwarf B star PG 0911+456 from asteroseismology. Our work forms part of an on…
Stellar Intensity Interferometry with Air Cherenkov Telescope arrays
S. Le Bohec, M. Daniel, W. J. de Wit +5
The present generation of ground-based Very High Energy (VHE) gamma-ray observatories consist of arrays of up to four large (> 12m diameter) light collectors quite similar to those…
Development of wavelength shifter coated reflectors for the ArDM argon dark matter detector
The ArDM Collaboration, V. Boccone, P. K. Lightfoot +38
To optimise the design of the light readout in the ArDM 1-ton liquid argon dark matter detector, a range of reflector and WLS coating combinations were investigated in several smal…
Cryogenic Characterization of FBK RGB-HD SiPMs
C. E. Aalseth, F. Acerbi, P. Agnes +268
We report on the cryogenic characterization of Red Green Blue - High Density (RGB-HD) SiPMs developed at Fondazione Bruno Kessler (FBK) as part of the DarkSide program of dark matt…
The ArDM Liquid Argon Time Projection Chamber at the Canfranc Underground Laboratory: a ton-scale detector for Dark Matter Searches
ArDM Collaboration, J. Calvo, C. Cantini +20
The Argon Dark Matter (ArDM) experiment consists of a liquid argon (LAr) time projection chamber (TPC) sensitive to nuclear recoils resulting from scattering of hypothetical Weakly…
ArDM: a ton-scale LAr detector for direct Dark Matter searches
ArDM Collaboration, A. Marchionni, C. Amsler +41
The Argon Dark Matter (ArDM-1t) experiment is a ton-scale liquid argon (LAr) double-phase time projection chamber designed for direct Dark Matter searches. Such a device allows to…
Strategy Implementation for the CTA Atmospheric Monitoring Program
M. Doro, M. Daniel, R. de los Reyes +2
The Cherenkov Telescope Array (CTA) is the next generation facility of Imaging Atmospheric Cherenkov Telescopes. It will reach unprecedented sensitivity and energy resolution in ve…
ArDM: first results from underground commissioning
A. Badertscher, F. Bay, N. Bourgeois +26
The Argon Dark Matter experiment is a ton-scale double phase argon Time Projection Chamber designed for direct Dark Matter searches. It combines the detection of scintillation ligh…
Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos
P. Agnes, S. Albergo, I. F. M. Albuquerque +273
Future liquid-argon DarkSide-20k and ARGO detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutr…
Self-contained Kondo effect in single molecules
C. H. Booth, M. D. Walter, M. Daniel +2
Kondo coupling of f and conduction electrons is a common feature of f-electron intermetallics. Similar effects should occur in carbon ring systems(metallocenes). Evidence for Kondo…