• A
  • A
  • A
  • АБВ
  • АБВ
  • АБВ
  • A
  • A
  • A
  • A
  • A
Обычная версия сайта
  • RU
  • EN
  • HSE University
  • Publications
  • Articles
  • Оптическое отождествление рентгеновских источников СРГ/еРОЗИТА на примере глубокого обзора области Дыры Локмана
  • RU
  • EN
Расширенный поиск
Высшая школа экономики
Национальный исследовательский университет
Priority areas
  • business informatics
  • economics
  • engineering science
  • humanitarian
  • IT and mathematics
  • law
  • management
  • mathematics
  • sociology
  • state and public administration
by year
  • 2027
  • 2026
  • 2025
  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • 2009
  • 2008
  • 2007
  • 2006
  • 2005
  • 2004
  • 2003
  • 2002
  • 2001
  • 2000
  • 1999
  • 1998
  • 1997
  • 1996
  • 1995
  • 1994
  • 1993
  • 1992
  • 1991
  • 1990
  • 1989
  • 1988
  • 1987
  • 1986
  • 1985
  • 1984
  • 1983
  • 1982
  • 1981
  • 1980
  • 1979
  • 1978
  • 1977
  • 1976
  • 1975
  • 1974
  • 1973
  • 1972
  • 1971
  • 1970
  • 1969
  • 1968
  • 1967
  • 1966
  • 1965
  • 1964
  • 1963
  • 1958
  • More
Subject
News
April 30, 2026
HSE Researchers Compile Scientific Database for Studying Childrens Eating Habits
The database created at HSE University can serve as a foundation for studying children’s eating habits. This is outlined in the study ‘The Influence of Age, Gender, and Social-Role Factors on Children’s Compliance with Age-Based Nutritional Norms: An Experimental Study Using the Dish-I-Wish Web Application.’ The work has been carried out as part of the HSE Basic Research Programme and was presented at the XXVI April International Academic Conference named after Evgeny Yasin.
April 30, 2026
New Foresight Centre Study Identifies the Most Destructive Global Trends for Humankind
A team of researchers from the HSE International Research and Educational Foresight Centre has examined how global trends affect the quality of human life—from life expectancy to professional fulfilment. The findings of the study titled ‘Human Capital Transformation under the Influence of Global Trends’ were published in Foresight.
April 28, 2026
Scientists Develop Algorithm for Accurate Financial Time Series Forecasting
Researchers at the HSE Faculty of Computer Science benchmarked more than 200,000 model configurations for predicting financial asset prices and realised volatility, showing that performance can be improved by filtering out noise at specific frequencies in advance. This technique increased accuracy in 65% of cases. The authors also developed their own algorithm, which achieves accuracy comparable to that of the best models while requiring less computational power. The study has been published in Applied Soft Computing.

 

Have you spotted a typo?
Highlight it, click Ctrl+Enter and send us a message. Thank you for your help!

Publications
  • Books
  • Articles
  • Chapters of books
  • Working papers
  • Report a publication
  • Research at HSE

?

Оптическое отождествление рентгеновских источников СРГ/еРОЗИТА на примере глубокого обзора области Дыры Локмана

Письма в Астрономический журнал. 2022. Т. 48. № 11. С. 765–777.
Быков С. Д., Бельведерский М. И., Гильфанов М. Р.

We present a method for the optical identification of sources detected in wide-field X-ray sky surveys. We have constructed and trained a neural network model to characterise the photometric attributes of the populations of optical counterparts of X-ray sources and optical field objects. The photometric information processing result is used for the probabilistic cross-match of X-ray sources with optical DESI Legacy Imaging Surveys sources. The efficiency of the method is illustrated using the SRG/eROSITA Survey of Lockman Hole. To estimate the accuracy of the method, we have produced a validation sample based on the Chandra and XMM-Newton catalogues of X-ray sources. The cross-match precision in our method reaches 94% for the entire X-ray catalogue and 97% for sources with a flux Fx,0.5−2>10−14 erg/s/cm^2. We discuss the further development of the optical identification model and the steps needed for its application to the SRG/eROSITA all-sky survey data.

Research target: Physics
Language: Russian
Full text
DOI
Text on another site
Keywords: X-ray sourcesрентгеновские источникиSRG/eROSITAoptical cross-matchСРГ/еРОЗИТАextragalactic sourcesвнегалактические источникикросс-отождествление
Similar publications
An Approximate Method for Calculating Kinetic Coefficients of Heavy Ions in He-Containing Mixtures in a Strong Electric Field
Ponomarev A., Aleksandrov N., Plasma Physics Reports 2026 Vol. 52 No. 3 P. 367–378
An approximate method for calculating drift velocity and other kinetic coefficients of heavy ions in a light gas is generalized to gaseous mixtures. Obtained equations are used to calculate the mobilities of and ions, as well as rate constants for inelastic ion–molecule processes with these ions in helium with small additions of O2 under an electric field. Calculated ...
Added: April 27, 2026
Influence of the Normal Magnetic Component to Magnetotail Current Sheet Forma
Domrin V. I., Malova H. V., V. Yu. Popov et al., Cosmic Research 2026 Vol. 64 No. 2 P. 238–252
During magnetospheric perturbations a relatively thin current sheet with thickness about several proton gyroradii forms in the Earth’s magnetotail. In a framework of the kinetic model describing current sheet thinning in the magnetotail, the processes of its formation are investigated depending on the normal magnetic field magnitude which affects both the current sheet structure and particle dynamics within ...
Added: April 27, 2026
Asymmetric Equilibrium Structures of Superthin Current Sheets: The Asymmetry of Plasma Sources
Tsareva O. O., Malova H. V., V. Yu. Popov et al., Plasma Physics Reports 2026 Vol. 52 No. 2 P. 179–185
The influence of asymmetry of plasma sources on the structure and spatial localization of a superthin current sheet (STCS) supported by demagnetized electrons is studied using a self-consistent model. The simulation takes into account the presence of a single plasma source in the northern hemisphere, which makes the plasma flow asymmetric. It is demonstrated that the asymmetry of ...
Added: April 27, 2026
Особенности генерации квазипериодических ОНЧ-излучений с существенной частотной динамикой внутри плазмосферы
П.А.Беспалов, О.Н. Савина, Геомагнетизм и аэрономия 2025 Т. 65 № 5 С. 620–628
Several basic models of frequency dynamics in quasi-periodic VLF emissions with spectral form repetition periods from 10 to 300 s are considered. In all cases, we are talking about manifestations of cyclotron instability of electron radiation belts thet are well described within the framework of the plasma magnetospheric maser theory based an the averaged self-consistent system of quasi-linear ...
Added: April 25, 2026
Modeling of Influence of a Thin Dielectric Film at a Fraction of Cathode Surface on Transition of a Glow Gas Discharge into an Arc Discharge
Bondarenko G.G., Fisher M. R., Kristya V. I., Bulletin of the Russian Academy of Sciences: Physics 2026 Vol. 90 No. 4 P. 572–576
A model of the cathode layer of a glow gas discharge with a thin dielectric film on a fraction of the cathode’s working surface is formulated. It is shown that a glow discharge most rapidly transits to an arc discharge, accompanied by a significant increase in discharge current density and a decrease in cathode voltage drop, if the ...
Added: April 25, 2026
Stable Multi-Wavelength Resonant Metal-dielectric Hybrid Nanostructure in the Infrared Range
Zadkov V., Plasmonics 2026 Vol. 21 P. 1503–1512
Plasmonic nanostructures typically exhibit shifts in their resonant wavelength in response to changes in the refractive index of the surrounding medium. This limits their applications in scenarios requiring stable optical resonances. Here we present a metallic-dielectric hybrid metasurface that exhibits stable multi-wavelength resonance even if the refractive index of its surrounding varies. To quantitatively evaluate the stability of ...
Added: April 22, 2026
Cross-influence of two societies in deterministic evolutionary game
Shchur L., Antonov D., Burovski E., International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 2026 P. 1–9
We present a simple model that simulates the possible influence of one society on another. Specifically, two societies evolve deterministically according to the well-known Nowak-May spatial game with the addition of mutual influence through connections that reflect the current states of the societies. This may be related to the influence of a global information resource ...
Added: April 20, 2026
Ising models on the hydrogen peroxide and other lattices
Qin X., Deng Y., Shchur L. et al., / Series arXiv "math". 2026. No. 2603.02962.
We perform a Monte Carlo analysis of the Ising model on many three-dimensional lattices. By means of finite-size scaling we obtain the critical points and determine the scaling dimensions. As expected, the critical exponents agree with the three-dimensional Ising universality class for all models. The irrelevant field, as revealed by the correction-to-scaling amplitudes, appears to ...
Added: April 20, 2026
Algorithmic overlaps as thermodynamic variables: from local to cluster Monte Carlo dynamics in critical phenomena
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Theory of capillary-induced self-coacervation in zwitterionic polymer solutions
Kalikin N., Брандышев П. Е., Budkov Y., Journal of Chemical Physics 2026 Vol. 164 Article 154904
This study presents a mean-field theory for zwitterionic polymer solutions confined within attractive slit-like nanopores. Building upon our prior model for self-coacervation [Budkov et al., Soft Matter 19, 3281–3289 (2023)], we demonstrate that strong electrostatic dipole–dipole correlations between monomeric units, coupled with attraction to pore walls, can induce capillary-driven liquid–liquid phase separation inside the pore—a ...
Added: April 18, 2026
UV-C microdisk lasers based on AlGaN heterostructures on sapphire
Moiseev E., Масютин Д. А., Мельниченко И. А. et al., Optics and Laser Technology 2025 Vol. 201 No. 115289 P. 1–5
Lasing at a wavelength near 255 nm is demonstrated in AlGaN whispering gallery mode microlasers with radii ranging from 1 to 3 µm fabricated on sapphire substrates, representing one of the shortest-wavelength realizations of microdisk lasers on this technologically relevant platform. The minimum threshold energy was 8.8 pJ (power density ≈ 280 kW/cm2) for a microlaser with a ...
Added: April 18, 2026
Asymptotic expansion of self-consistent energy levels of hydrogen atom in ortogonal electric and magnetic fields
A. V. Pereskokov, Theoretical and Mathematical Physics 2026 Vol. 226 No. 3 P. 470–484
We consider the spectral problem for a hydrogen atom in orthogonal electric and magnetic fields with an additional self-consistent field. We obtain an asymptotic expansion of self-consistent energy levels. We find an asymptotic expansion of asymptotic eigenfunctions near the sphere |q| = 2. We calculate the asymptotics of their norm in the space L2(R3). ...
Added: April 12, 2026
Mean-squared displacements of rough particles in polydisperse granular gases
Anna S. Bodrova, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2026 Vol. 113 No. 4 Article 045403
We investigate the diffusion coefficients and mean-squared displacements in a polydisperse granular gas in a homogeneous cooling state by considering the roughness of the particles. We study their dependence on the normal and tangential restitution coefficients. We show that the motility of particles is strongly affected by their mechanical properties and surface characteristics. ...
Added: April 5, 2026
ДЕФОРМАЦИЯ И УСТОЙЧИВОСТЬ ВЯЗКОУПРУГОЙ ПОЛИМЕРНОЙ КАПЛИ ПРИ ТЕЧЕНИИ В КАНАЛЕ С РЕЗКИМ СУЖЕНИЕМ
Рощин Д. Е., Патлажан С. А., Кравченко И. В. et al., Коллоидный журнал 2026 Т. 88 № 3
В работе экспериментально и методами численного моделирования исследованы особенности деформационной динамики вязкоупругих капель растворов полиакрилонитрила (ПАН) в диметилсульфоксиде (ДМСО) при течении в силиконовом масле в канале с резким сужением. Основное внимание сосредоточено на изучении влияния концентрации ПАН и капиллярного числа на деформационное поведение и устойчивость таких капель. Показано, что увеличение концентрации ПАН приводит к существенному ...
Added: April 1, 2026
Обнаружение спинового тока в обменно-смещенных структурах Co/Fe/Mn/Pt
Kalyabin D., Demidov V., Никитов С. А., Физика металлов и металловедение 2025 Т. 126 № 11 С. 1220–1225
Исследован спиновый транспорт в антиферромагнитных проводниках. Спиновый ток инжектировали из ферромагнитной пленки Co в антиферромагнитный проводник FeMn, после чего было исследовано постоянное напряжение, возникающее в слое Pt в условиях ферромагнитного резонанса при различных углах поворота ориентации постоянного магнитного поля в плоскости пленки. Был рассчитан вклад, вызванный чистым спиновым током (спиновой накачкой), зарегистрированный с помощью обратного ...
Added: March 27, 2026
Обзор СРГ/eРОЗИТА в области Дыры Локмана: Классификация рентгеновских источников
Бельведерский М. И., Быков С. Д., Гильфанов М. Р., Письма в Астрономический журнал 2022 Т. 48 № 12 С. 839–851
We have classified the X-ray sources detected by the SRG/eROSITA telescope in the deep Lockman Hole survey. The goal of the classification has been the separation of the sources into Galactic and extragalactic objects. For this purpose, we have used the results of our previous cross-match of Xray sources with optical catalogs. For the classification ...
Added: May 19, 2023
SRGz: ПОСТРОЕНИЕ МОДЕЛИ ОПТИЧЕСКОГО ОТОЖДЕСТВЛЕНИЯ РЕНТГЕНОВСКИХ ИСТОЧНИКОВ СРГ/еРОЗИТА НА ПРИМЕРЕ ДАННЫХ ОБЛАСТИ ДЫРЫ ЛОКМАНА
Бельведерский М. И., Мещеряков А. В., Медведев П. С. et al., Письма в Астрономический журнал 2022 Т. 48 № 2 С. 119–137
Представлена вероятностная модель оптического отождествления рентгеновских источников СРГ/еРОЗИТА в области Дыры Локмана по данным фотометрического обзора DESI Legacy Imaging Surveys, которая учитывает как позиционную, так и фотометрическую информацию об оптических объектах в окрестности рентгеновских источников и позволяет производить отбор оптических компаньонов с точностью и полнотой на уровне ≈94% (для FX,0.5−2 > 10−14 эрг/с/см2). На основе ...
Added: December 13, 2022
Изменение природы спектрального континуума и стабильность циклотронной линии в рентгеновском пульсаре GRO J2058+42
Gorban A., Мольков С. В., Цыганков С. С. et al., Письма в Астрономический журнал 2022 Т. 48 № 4 С. 279–289
The results of the broadband spectral and timing study of the transient X-ray pulsar GRO J2058+42 in a wide energy range at a low luminosity Lx ≃ 2.5 × 10^36 erg s^−1 are reported. The data revealed that the pulse profile and pulse fraction of the source are significantly changed in comparison with previous NuSTAR ...
Added: June 16, 2022
ТЕМП РОСТА СВЕРХМАССИВНЫХ ЧЕРНЫХ ДЫР И ЕГО ЗАВИСИМОСТЬ ОТ МАССЫ ЗВЕЗДНОГО НАСЕЛЕНИЯ ГАЛАКТИК В СОВРЕМЕННУЮ ЭПОХУ
Prokhorenko S. A., Sazonov S., Письма в Астрономический журнал 2021 Т. 47 № 8 С. 537–556
Изучается распределение темпов аккреции на сверхмассивные черные дыры в АЯГ местного объема Вселенной (z < 0.15) на основе обзоров неба в близком ИК и жестком рентгеновском диапазонах энергий (2MASS, Swift/BAT). Использование достаточно точных оценок масс черных дыр позволило надежно оценить эддингтоновское отношение λEdd примерно для половины объектов выборки АЯГ, для остальных использовалась более грубая оценка ...
Added: January 26, 2022
Исследование рентгеновского пульсара XTE J1946+274 по данным обсерватории NuSTAR
Gorban A., Мольков С. В., Цыганков С. С. et al., Письма в Астрономический журнал 2021 Т. 47 № 6 С. 416–427
We present the results of our spectral and timing analysis of the emission from the transient X-ray pulsar XTE J1946+274 based on the simultaneous NuSTAR and Swift/XRT observations in the broad energy range 0.3–79 keV carried out in June 2018 during a bright outburst. Our spectral analysis has confirmed the presence of a cyclotron absorption ...
Added: November 18, 2021
  • About
  • About
  • Key Figures & Facts
  • Sustainability at HSE University
  • Faculties & Departments
  • International Partnerships
  • Faculty & Staff
  • HSE Buildings
  • HSE University for Persons with Disabilities
  • Public Enquiries
  • Studies
  • Admissions
  • Programme Catalogue
  • Undergraduate
  • Graduate
  • Exchange Programmes
  • Summer University
  • Summer Schools
  • Semester in Moscow
  • Business Internship
  • Research
  • International Laboratories
  • Research Centres
  • Research Projects
  • Monitoring Studies
  • Conferences & Seminars
  • Academic Jobs
  • Yasin (April) International Academic Conference on Economic and Social Development
  • Media & Resources
  • Publications by staff
  • HSE Journals
  • Publishing House
  • iq.hse.ru: commentary by HSE experts
  • Library
  • Economic & Social Data Archive
  • Video
  • HSE Repository of Socio-Economic Information
  • HSE1993–2026
  • Contacts
  • Copyright
  • Privacy Policy
  • Site Map
Edit