A5075207477- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- Atmospheric Ozone and Climate
- SAS software applications and methods
- Astronomical Observations and Instrumentation
- Calibration and Measurement Techniques
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Atmospheric aerosols and clouds
- Adaptive optics and wavefront sensing
- Infrared Target Detection Methodologies
- CCD and CMOS Imaging Sensors
- Radiation Detection and Scintillator Technologies
- Astrophysical Phenomena and Observations
- Pulsars and Gravitational Waves Research
- Stellar, planetary, and galactic studies
- Photocathodes and Microchannel Plates
- Atmospheric and Environmental Gas Dynamics
- History and Developments in Astronomy
- Solar and Space Plasma Dynamics
Czech Academy of Sciences, Institute of Physics
2016-2025
Universitat de Barcelona
2024
Institut d'Estudis Espacials de Catalunya
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2023
Czech Academy of Sciences
2013-2023
Tokai University
2023
University of Geneva
2023
Czech Academy of Sciences, Astronomical Institute
2023
Charles University
2023
National Academy of Sciences of Ukraine
2023
ABSTRACT GRANDMA (Global Rapid Advanced Network Devoted to the Multi-messenger Addicts) is a network of 25 telescopes different sizes, including both photometric and spectroscopic facilities. The aims coordinate follow-up observations gravitational-wave (GW) candidate alerts, especially those with large localization uncertainties, reduce delay between initial detection optical confirmation. In this paper, we detail GRANDMA’s observational performance during LIGO/Advanced Virgo Observing Run...
The puzzle of ultra-high energy cosmic rays (UHECRs) still remains unresolved. With the progress in preparation next generation experiments (AUGER, EUSO, OWL), importance directional analysis existing and future events is increasing. Galactic Magnetic Field (GMF) plays key role source identification even this range. We first analyze current status our experimental theoretical knowledge about GMF introduce a complex up-to-date model GMF. Then we present two examples simple applications...
We present our follow-up observations with GRANDMA of transient sources revealed by the Zwicky Transient Facility (ZTF). Over a period six months, all ZTF triggers were examined in real time dedicated science module implemented Fink broker, which will be used for data processing Vera C. Rubin Observatory. In this article, we three selection methods to identify kilonova candidates. Out more than 35 million candidates, hundred have passed criteria. Six then followed-up (by both professional...
We present a discovery and observation of an extraordinarily bright prompt optical emission the GRB 060117 obtained by wide-field camera atop robotic telescope FRAM Pierre Auger Observatory from 2 to 10 minutes after GRB. found rapid average temporal flux decay alpha = -1.7 +- 0.1 peak brightness R 10.1 mag. Later observations other instruments set strong limit on radio transient fluxes, unveiling unexpectedly further decay. interpretation featuring relatively steep electron-distribution...
FRAM—F/(Ph)otometric Robotic Atmospheric Monitor is one of the atmospheric monitoring instruments at Pierre Auger Observatory in Argentina. FRAM an optical telescope equipped with CCD cameras and photometer, it automatically observes a set selected standard stars. Primarily, observations are used to obtain wavelength dependence light extinction. also able observe secondary astronomical targets, namely detection counterparts gamma‐ray bursts has already proven be successful. Finally,...
Future wide field astronomical surveys, like Large Synoptic Survey Telescope (LSST), require photometric precision on the percent level. The accuracy of sensor calibration procedures should match these requirements. Pixel size variations found in CCDs from different manufacturers are source systematic errors flat procedure. To achieve required to meet most demanding science goals this effect be taken into account. study pixel area was performed for fully depleted, thick produced a technology...
A FRAM (F/(Ph)otometric Robotic Atmospheric Monitor) telescope is a system of robotic mount, large-format CCD camera and fast telephoto lens that can be used for atmospheric monitoring at any site when information about the transparency required with high spatial or temporal resolution where continuous use laser-based methods this purpose would interfere other observations. The original has been operated Pierre Auger Observatory in Argentina more than decade, while three FRAMs are foreseen...
The Cherenkov Telescope Array (CTA) is a project to build new generation ground-based gammaray observatory. FRAM – F(/Ph)otometric Robotic Atmospheric Monitor device, which can provide it with the Vertical Aerosol Optical Depth (VAOD) maps in field of view CTA almost real time (delay minutes). small fast robotic astronomical telescope large and sensitive CCD camera. It uses stellar photometry measure atmospheric extinction across calculate VAOD. In this contribution, results first few months...
The idea of using stellar photometry for atmospheric monitoring optical experiments in highenergy astrophysics is seemingly straightforward, but reaching high precision the order 0.01 determination vertical aerosol depth (VAOD) has proven difficult. Wide-field over a large span altitudes allows fast VAOD independently absolute calibration system, while providing this as useful by-product. Using several years data taken by FRAM (F/(Ph)otometric Robotic Atmospheric Monitor) telescope at Pierre...
Following the detection of a long GRB 190919B by INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory), we obtained an optical photometric sequence its counterpart. The light curve emission exhibits unusually steep rise ~100 s after initial trigger. This behaviour is not expected from 'canonical' afterglow. As explanation, propose scenario consisting two superimposed flares: flare originating inner engine activity followed hydrodynamic peak external shock. inner-engine nature first...
FRAM - F/(Ph)otometric Robotic Atmospheric Monitor is the latest addition to atmospheric monitoring instruments of Pierre Auger Observatory. An optical telescope equipped with CCD camera and photometer, it automatically observes a set selected standard stars calibrated terrestrial source. Primarily, wavelength dependence attenuation derived comparison between its vertical values (for stars) horizontal source) made. Further, integral aerosol depth can be obtained. A secondary program...
Remote Telescope System 2nd version (RTS2) is an open source project aimed at developing a software environment to control fully robotic observatory. RTS2 consists of various components, which communicate via ASCII based protocol. As the protocol was from beginning designed as observatory system, it provides some unique features, are hard find in other communication systems. These features include advanced synchronisation mechanisms and strategies for setting variables. This presentation...
The All Sky Camera (ASC) was developed as a universal device for the monitoring of night sky quality. Eight ASCs are already installed and measure parameters at eight candidate sites Cherenkov Telescope Array (CTA) gamma-ray observatory. ACS system consists an astronomical CCD camera, fish eye lens, control computer associated electronics. measurement is carried out during night. images automatically taken every 5 minutes processed using device. analysis results cloud fraction (the...
GRANDMA is an international project that coordinates telescope observations of transient sources with large localization uncertainties. Such include gravitational wave events, gamma-ray bursts and neutrino events. currently 25 telescopes (70 scientists), the aim optimizing imaging strategy to maximize probability identifying optical counterpart a source. This paper describes motivation for project, organizational structure, methodology initial results.
The air fluorescence detectors (FDs) of the Pierre Auger Observatory are vital for determination shower energy scale. To compensate variations in atmospheric conditions that affect measurement, operates an array monitoring instruments to record hourly across detector site, area exceeding 3,000 square km. This paper presents results from four used characterize aerosol component atmosphere: Central Laser Facility (CLF), which provides FDs with calibrated laser shots; scanning backscatter...
Scientific CMOS image sensors are a modern alternative for typical CCD detectors, as they offer both low read-out noise, large sensitive area, and high frame rates. All these makes them promising devices wide-field sky surveys. However, the peculiarities of technology have to be properly taken into account when analyzing data. In order characterize these, we performed an extensive laboratory testing two Andor cameras based on sCMOS chips -- Neo Marana. Here report its results, especially...
The All Sky Camera (ASC) is a passive non-invasive imaging system for rapid night sky atmosphere monitoring. By design, the operation of ASC will not affect measurement procedure CTA observatory, which we discuss its application in this report. data collected should enable improved productivity and increased time observatory. goal to identify cloud position, attenuation evolution condition, working within Central Calibration Facilities (CCF) group. Clouds monitoring may allow near-future...
RTS2, or Remote Telescope System 2nd Version, is an open-source, distributed and modular observatory control system. During the course of its development lasting over a decade, original goal to develop software capable searches for optical transients γ-ray bursts changed system full large observatories executing complex observing scenarios. In this presentation, we would like share our experience with meta-queues scheduling, developed primarily automation FLWO 1.2m telescope. Meta-queues...
Precision stellar photometry using a telescope equipped with CCD camera is an obvious way to measure the total aerosol content of atmosphere as apparent brightness every star affected by scattering. Achieving high precision in vertical optical depth (at level 0.01) presents series interesting challenges. Using 3.5 years data taken FRAM instrument at Pierre Auger Observatory, we have developed set methods and tools overcome most these We use wide-field stars over large span airmass eliminate...