R. Inasaridze
A5089392598- Gamma-ray bursts and supernovae
- SAS software applications and methods
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Pulsars and Gravitational Waves Research
- Space Satellite Systems and Control
- Geophysics and Gravity Measurements
- Astrophysics and Cosmic Phenomena
- Calibration and Measurement Techniques
- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Spectroscopy and Chemometric Analyses
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
- Adaptive optics and wavefront sensing
- CCD and CMOS Imaging Sensors
- Geochemistry and Geologic Mapping
- Atmospheric Ozone and Climate
- Historical Astronomy and Related Studies
- Methane Hydrates and Related Phenomena
Abastumani Astrophysical Observatory
2015-2024
Samtskhe-Javakheti State University
2019-2024
Ilia State University
2013-2022
Shamakhy Astrophysical Observatory named after Nasraddin Tusi
2022
Azerbaijan National Academy of Sciences
2022
GRB 221009A is the brightest Gamma-Ray Burst (GRB) detected in more than 50 years of study. In this paper, we present observations X-ray and optical domains after obtained by GRANDMA Collaboration (which includes from 30 professional amateur telescopes) Insight-HXMT Collaboration. We study afterglow with empirical fitting GRANDMA+HXMT data, augmented data literature up to 60 days. then model numerically, using a Bayesian approach, HXMT-LE observations, that augment Swift-XRT additional...
We present the Global Rapid Advanced Network Devoted to Multi-messenger Addicts (GRANDMA). The network consists of 21 telescopes with both photometric and spectroscopic facilities. They are connected together thanks a dedicated infrastructure. aims at coordinating observations large sky position estimates transient events enhance their follow-up reduce delay between initial detection optical confirmation. GRANDMA program mainly focuses on gravitational-wave alerts find characterise...
Abstract On 2022 September 26, the Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, satellite of binary near-Earth asteroid (65803) Didymos. This demonstrated efficacy a kinetic impactor for planetary defense by changing orbital period Dimorphos 33 minutes. Measuring change relied heavily on coordinated campaign lightcurve photometry designed to detect mutual events (occultations and eclipses) as direct probe satellite’s period. A total 28 telescopes contributed 224...
ABSTRACT GRB 230812B is a bright and relatively nearby (z = 0.36) long gamma-ray burst (GRB) that has generated significant interest in the community thus been observed over entire electromagnetic spectrum. We report 80 observations X-ray, ultraviolet, optical, infrared, submillimetre bands from GRANDMA (Global Rapid Advanced Network for Multimessenger Addicts) network of observatories observational partners. Adding complementary data literature, we then derive essential physical parameters...
The spin state of small asteroids can change on a long timescale by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, net torque that arises from anisotropically scattered sunlight and proper thermal radiation an irregularly-shaped asteroid. secular in rotation period caused YORP effect be detected analysis asteroid photometric lightcurves. We analyzed lightcurves near-Earth (1865) Cerberus, (2100) Ra-Shalom, (3103) Eger with aim to detect possible deviations constant effect. carried...
We present optical observations of SN 2013dx, related to the Fermi burst GRB 130702A occurred at a redshift z = 0.145. It is second-best sampled GRB-SN after SN~1998bw: observational light curves contain more than 280 data points in uBgrRiz filters until 88 day burst, and were collected from our collaboration (Maidanak Observatory, Abastumani Crimean Astrophysical Mondy National Observatory Turkey, Observatorio del Roque de los Muchachos) literature. model numerically multicolour using...
This study aims to determine the size, albedo and rotational period of (98943) 2001 CC21, target Hayabusa2 extended mission, using thermal data from Spitzer Space telescope ground based observations. The were acquired with Infrared Spectrograph in 6-38 micron range, reduced pipeline modeled Near Earth Asteroid Thermal Modeling asteroid size albedo. absolute magnitude determined thanks new observations carried out at 3.5m New Technology Telescope, 1.2m Observatoire de Haute Provence, 0.7m...
Abstract The existence of asteroid pairs, two bodies on similar heliocentric orbits, reveals an ongoing process rotational fission among asteroids. This newly found class objects has not been studied in detail yet. Here we choose asteroids (6070) Rheinland and (54827) 2001 NQ8, the most suitable pair for in-depth analysis. First, use available optical photometry to determine their state convex shapes. Rotational pole is very near south ecliptic with a latitude uncertainty about 10°. There...
Abstract We investigate the prompt emission and afterglow properties of short-duration gamma-ray burst (sGRB) 130603B another eight sGRB events during 2012–2015, observed by several multiwavelength facilities including Gran Canarias Telescope 10.4 m telescope. Prompt high energy data were obtained INTEGRAL-SPI-ACS, Swift-BAT, Fermi-GBM satellites. The INTEGRAL in range 0.1–10 MeV for 130603B, 140606A, 140930B, 141212A, 151228A do not show any signature extended or precursor activity their...
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...
Context . The rotation state of small asteroids is affected in the long term by perturbing torques gravitational and radiative origin (the YORP effect). former can be detected a change spin-axis orientation inertial space; latter manifests itself quadratic increase phase. Aims Direct observational evidence effect primary goal our work. This includes both detection for new objects an improvement accuracy previously known detections. Methods We carried out photometric observations five...
The ejecta composition is an open question in gamma-ray bursts (GRB) physics. Some GRBs possess a quasi-thermal spectral component the time-resolved analysis, suggesting hot fireball origin. Others show featureless non-thermal spectrum known as "Band" function, consistent with synchrotron radiation origin and that jet Poynting-flux-dominated at central engine likely emission region well. There are also showing sub-dominant thermal dominant hybrid composition. Here we report extraordinarily...
The rotation state of small asteroids is affected by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, which a net torque caused solar radiation directly reflected and thermally reemitted from surface. Due to this period slowly changes, can be most easily measured in light curves because shift phase accumulates over time quadratically. We collected archived carried out new photometric observations for (10115) 1992 SK, (1620) Geographos, (1685) Toro. applied method curve inversion fit...
A new method for the determination of open cluster membership based on a cumulative effect is proposed. In field plate relative x and y coordinate positions each star with respect to all other stars are added. The procedure carried out two epochs t_1 t_2 separately, then one sum subtracted from another. For differences in its will be accumulated. star, contrary, changes members at very small. On histogram sums gather left diagram, while form tail right. allows us efficiently discriminate...
Events such as GRB130606A at z=5.91, offer an exciting new window into pre-galactic metal enrichment in these very high redshift host galaxies. We study the environment and galaxy of GRB 130606A, a high-z event, context population GRBs. have obtained multiwavelength observations from radio to gamma-ray, concentrating particularly on X-ray evolution well optical photometric spectroscopic data analysis. With initial Lorentz bulk factor range Γ_0 ~ 65-220, afterglow can be explained by...