Zobrazeno 1 - 10
of 6 835
pro vyhledávání: '"Safonova AN"'
By using the Efetov's super-symmetric formalism we computed analytically the mean spectral density $\rho(E)$ for the L\'evy and the L\'evy -Rosenzweig-Porter random matrices which off-diagonal elements are strongly non-Gaussian with power-law tails.
Externí odkaz:
http://arxiv.org/abs/2408.15072
Autor:
Bordoloi, Olag Pratim, Ananthamoorthy, B., Shalima, P., Safonova, Margarita, Bhattacharya, Debbijoy, Shchekinov, Yuri A., Gogoi, Rupjyoti
Publikováno v:
PASP, Vol. 136, No. 7, p. 074101, 2024
We present measurements of diffuse ultraviolet emission in the dwarf irregular galaxy Holmberg II obtained with the UltraViolet Imaging Telescope (UVIT) onboard AstroSat. With a spatial resolution of 1.2 to 1.6 arcsec, these are the highest resolutio
Externí odkaz:
http://arxiv.org/abs/2407.03997
Autor:
Safonova, Margarita, Brosch, Noah, Kaspi, Shai, Polishook, David, Rich, R. Michael, Sutaria, Firoza, Murthy, Jayant
We report results of intensive time-resolved imaging photometry and synoptic deep imaging of the comet C/2012 S1 (ISON) performed in February 2013. The data were obtained at the Wise Observatory in Israel (WO), at the Himalayan Chandra Telescope (HCT
Externí odkaz:
http://arxiv.org/abs/2407.00685
Autor:
P, Bharat Chandra, Nair, Binukumar G., Ghatul, Shubham Jankiram, Jain, Shubhangi, Sriram, S., S., Mahesh Babu, Mohan, Rekhesh, Safonova, Margarita, Murthy, Jayant, Sachkov, Mikhail
Publikováno v:
Exp Astron 57, 18 (2024)
The Spectroscopic Investigation of Nebular Gas (SING) is a near-ultraviolet (NUV) low-resolution spectrograph payload designed to operate in the NUV range, 1400 $\unicode{x212B}$ -- 2700 $\unicode{x212B}$, from a stable space platform. SING telescope
Externí odkaz:
http://arxiv.org/abs/2404.17653
Autor:
P, Bharat Chandra, G., Binukumar, Janakiram, Shubham, Babu, Mahesh, Jain, Shubhangi, Rai, Richa, Mohan, Rekhesh, Safonova, Margarita, Murthy, Jayant
Publikováno v:
Journal of Astronomical Instrumentation, 2024
In ultraviolet (UV) astronomical observations, photons from the sources are very few compared to the visible or infrared (IR) wavelength ranges. Detectors operating in the UV usually employ a photon-counting mode of operation. These detectors usually
Externí odkaz:
http://arxiv.org/abs/2401.01443
Autor:
Devarapalli, Shanti Priya, Jagirdar, Rukmini, Pothuneni, Ravi Raja, Amente, Dereje Wakgari, Thomas, Vineet, Safonova, Margarita, Brosch, Noah
Publikováno v:
New Astronomy, Vol. 107, 2024, 102150
Binary stars are believed to be key determinants in understanding globular cluster evolution. In this paper, we present the Multi-band photometric analyses of five variables in the nearest galactic globular cluster M4, from the observations of CASE,
Externí odkaz:
http://arxiv.org/abs/2311.07051
Publikováno v:
E3S Web of Conferences, Vol 333, p 01010 (2021)
This paper presents the results of textural segmentation of satellite images with spatial resolution
Externí odkaz:
https://doaj.org/article/400c954710904802995514c3fe4154a2
Autor:
Safonova, Margarita, Bulygin, Igor I., Sazhina, Olga S., Sazhin, Mikhail V., Hasan, Priya, Sutaria, Firoza
Publikováno v:
Bull. Soc. R. Sci. Liege, 2024, 93(2), 790-796
Cosmic strings (CS) are one-dimensional cosmological-size objects predicted in realistic models of the early Universe. Analysis of the cosmic microwave background (CMB) anisotropy data from the Wilkinson Microwave Anisotropy Probe (WMAP) and Planck s
Externí odkaz:
http://arxiv.org/abs/2309.11831
In 2016, a star KIC 8462852 caught the world's attention due to a paper by citizen scientists who noticed its seemingly unexplainable brightness variations. The forward theory was offered - KIC 8462852 is surrounded by a Dyson sphere, a megastructure
Externí odkaz:
http://arxiv.org/abs/2309.06562
Holmberg II - a dwarf galaxy in the nearby M81 group - is a very informative source of distribution of gas and dust in the interstellar discs. High-resolution observations in the infrared (IR) allows us to distinguish isolated star-forming regions, p
Externí odkaz:
http://arxiv.org/abs/2308.16883