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Measurement of the time delay between multiple images of a gravitational lens system is potentially an accurate method of determining the Hubble constant over cosmological distances. One of the most promising candidates for an application…

An upgrade to the IceCube Neutrino Telescope is currently under construction. For this IceCube Upgrade, seven new strings will be deployed in the central region of the 86 string IceCube detector to enhance the capability to detect neutrinos…

Instrumentation and Methods for Astrophysics · Physics 2021-07-27 Woosik Kang , Jiwoong Lee , Gerrit Roellinghoff , Carsten Rott , Christoph Tönnis

The Hubble constant value is currently known to 10% accuracy unless assumptions are made for the cosmology (Sandage et al. 2006). Gravitational lens systems provide another probe of the Hubble constant using time delay measurements.…

Instrumentation and Methods for Astrophysics · Physics 2010-12-01 G. Gürkan , N. Jackson , I. W. A. Browne , L. V. E. Koopmans , C. D. Fassnacht , A. Berciano Alba

High resolution MERLIN observations of a newly-discovered four-image gravitational lens system, B0128+437, are presented. The system was found after a careful re-analysis of the entire CLASS dataset. The MERLIN observations resolve four…

A method to synchronise, at the sub-nanosecond level, clocks used for neutrino time-of-flight measurements is proposed. Clocks situated near the neutrino source and target are compared with a moveable clock that is transported between them.…

High Energy Physics - Phenomenology · Physics 2015-06-12 J. H. Field

For the first time, we have introduced the Tetrahedron Constellation of Gravitational Wave Observatory (TEGO) composed of four identical spacecrafts (S/Cs). The laser telescopes and their pointing structures are mounted on the S/C platform…

General Relativity and Quantum Cosmology · Physics 2024-09-27 Hong-Bo Jin , Cong-Feng Qiao

A GAGG detector capable of dissecting a multi-coincidence solar neutrino interaction on ${}^{71}$Ga is under development for potential space-based applications. We identify three distinct detection signatures when ${}^{71}$Ge$^*$ is…

High Energy Physics - Experiment · Physics 2025-05-01 Brooks Hartsock , Nickolas Solomey , Jonathan Folkerts , Brian Doty

We have observed the gravitational lens system Q2237+0305 from the Maidanak Observatory over the period from August 2002 to November 2003. Here we report the results of our observations. We implemented a two-stage technique that has been…

Photometric and astrometric monitoring of directly imaged exoplanets will deliver unique insights into their rotational periods, the distribution of cloud structures, weather, and orbital parameters. As the host star is occulted by the…

Instrumentation and Methods for Astrophysics · Physics 2020-07-01 Steven P. Bos

Stencil computations represent a very common class of nested loops in scientific and engineering applications. Exploiting vector units in modern CPUs is crucial to achieving peak performance. Previous vectorization approaches often consider…

Mathematical Software · Computer Science 2020-10-13 Liang Yuan , Hang Cao , Yunquan Zhang , Kun Li , Pengqi Lu , Yue Yue

The complex ten-component gravitational lens system B1933+503 has been monitored with the VLA during the period February to June 1998 with a view to measuring the time delay between the four compact components and hence to determine the…

Astrophysics · Physics 2009-10-31 A. D. Biggs , E. Xanthopoulos , I. W. A. Browne , L. V. E. Koopmans , C. D. Fassnacht

Astronomical facilities at the high-altitude observatory Terskol in the Northern Caucasus include optical telescopes with diameters up to 2 m, their instrumentation (high-resolution spectrometers, high-speed photometers, CCDs, etc.), as…

Instrumentation and Methods for Astrophysics · Physics 2010-03-26 V. Tarady , O. Sergeev , M. Karpov , B. Zhilyaev , V. Godunova

The multiple system V505 Sagittarii is composed of at least three stars: a compact eclipsing pair and a distant component, which orbit is measured directly using speckle interferometry. In order to explain the observed orbit of the third…

Solar and Stellar Astrophysics · Physics 2010-04-21 M. Broz , P. Mayer , T. Pribulla , P. Zasche , D. Vokrouhlicky , R. Uhlar

This article develops a protocol to synchronize clocks on board a network of satellites equipped with quantum resources. We show that, in such a constellation, satellites reinforce each other's sync capabilities, forming a common clock that…

Quantum Physics · Physics 2023-11-21 Sage Ducoing , Ivan Agullo , James E. Troupe , Stav Haldar

UNIT (The Ukrainian synchronous Network of small Internet Telescopes) is a system of automated telescopes that search for simultaneous optical activity of transient objects associated with variable stars, small bodies of the Solar system,…

Astrophysics · Physics 2007-11-02 B. E. Zhilyaev , M. V. Andreev , Ya. O. Romanyuk , A. V. Sergeev , V. K. Tarady

We describe the readout electronics for the STAR Time Projection Chamber. The system is made up of 136,608 channels of waveform digitizer, each sampling 512 time samples at 6-12 Mega-samples per second. The noise level is about 1000…

Nuclear Experiment · Physics 2008-11-26 M. Anderson , R. Bossingham , F. Bieser , D. Cebra , E. L. Hjort , S. R. Klein , C. Q. Vu , H. Wieman

Temporal imaging systems are outstanding tools for single-shot observation of optical signals that have irregular and ultrafast dynamics. They allow long time windows to be recorded with femtosecond resolution, and do not rely on complex…

Ultralight vector dark matter induces metric fluctuations that generate timing residuals in the arrival times of pulsar emissions through two distinct modes: a fast mode, sourced by coherent field oscillations, and a slow mode, arising from…

High Energy Physics - Phenomenology · Physics 2025-10-27 Jeff A. Dror , Qiushi Wei

Space objects in Geostationary Earth Orbit (GEO) present significant detection challenges in optical imaging due to weak signals, complex stellar backgrounds, and environmental interference. In this paper, we enhance high-frequency features…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Xiaoqing Lan , Biqiao Xin , Bingshu Wang , Han Zhang , Rui Zhu , Laixian Zhang

Here we describe the first light of the novel 9-channel wide-field optical monitoring system with sub-second temporal resolution, Mini-MegaTORTORA, which is being tested now at Special Astrophysical Observatory on Russian Caucasus. The…

Instrumentation and Methods for Astrophysics · Physics 2018-03-14 A. Biryukov , G. Beskin , S. Karpov , S. Bondar , E. Ivanov , E. Katkova , A. Perkov , V. Sasyuk
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