1,211 research outputs found

    Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites

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    We present here the results of our analysis of X-ray properties of Seyfert 2 galaxy NGC 3281, based on the observational data obtained by XMM-Newton and INTEGRAL within the energy ranges 0.2-12 keV and 20-150 keV, respectively. The XMM-Newton spectrum of this object is presented for the first time. We show that fitting the X-ray spectrum of this galaxy with models based on the reflection from the disc with infinite column density yields non-physical results. More appropriate fit takes into account both transmitted and reflected emission, passed through a gas-dusty torus-like structure. Keeping this in mind, to model the inhomogeneous clumpy torus, we used the MYTorus model. Hence, we propose that the torus of NGC 3281 is not continuous structure, but it consists of separate clouds, which is in a good agreement with the results of near-IR observations. Using this assumption, we found that the torus inclination angle and the hydrogen column density are 66.98^{+2.63}_{-1.34} degrees and 2.08^{+0.35}_{-0.18}x10^{24} cm^{-2}, respectively. Also, the emission of the hot diffuse gas with temperature ~590 eV and warm absorption were detected.Comment: 8 pages, 5 figures, 2 tables, accepted for publication in Advances in Astronomy and Space Physic

    The role of elective courses in training students ΠΎf preventive medicine faculty

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    By the example of professional training of students of medical-prophylactic faculty the role of disciplines at the choice was substantiated in the organization of educational process at medical high schoolНа ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ ΠΏΡ€ΠΎΡ„Π΅ΡΡΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΊΠΈ студСнтов ΠΌΠ΅Π΄ΠΈΠΊΠΎ-профилактичСского Ρ„Π°ΠΊΡƒΠ»ΡŒΡ‚Π΅Ρ‚Π° обоснована Ρ€ΠΎΠ»ΡŒ дисциплин ΠΏΠΎ Π²Ρ‹Π±ΠΎΡ€Ρƒ Π² ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ процСсса Π² мСдицинском Π²ΡƒΠ·

    Studying the long-time variability of the Seyfert 2 galaxy NGC 4388 with INTEGRAL and Swift

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    We present analysis results on the Seyfert 2 galaxy NGC 4388 based on 6 yr of INTEGRAL data combined with Swift/Burst Alert Telescope survey and Swift/X-Ray Telescope pointed observations. These data, taken from 2003 to 2009, allow us to study the broad-band properties of this active galactic nucleus in the 0.3-300 keV energy range. The continuum emission of NGC 4388 is well represented by an absorbed power-law model with exponential cut-off at high energies and an upper limit on the reflection component of R < 0.5. We find slow strong variations of the hard X-ray emission, indicating both flux and spectral slope changes on the 3-6 months time-scale. In comparison with previous results on NGC 4388, the source shows a complex variability behaviour, i.e. the spectral shape and the 20-60 keV flux vary independentl

    Is KPD 1930+2752 a good SN Ia progenitor?

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    We investigate the evolution of a binary system which initially has an orbital period of 2^h 17^m and contains a 0.5 M_sun helium star with a white dwarf companion of 0.97 M_sun, similarly to suggested SN Ia candidate progenitor KPD 1930+2752. We show that the helium star completes core helium burning and becomes a white dwarf before components merge. The most probable outcome of the merger of components is formation of a massive white dwarf, despite initially the total mass of the system is above the Chandrasekhar mass

    The experience of interdepartmental interaction for doctors of preventive medicine

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    The article describes the possibility of effective interdepartmental cooperation in doctors trainingΠ’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΎΠ½Π½ΠΎ-пСдагогичСскиС аспСкты эффСктивного ΠΌΠ΅ΠΆΠΊΠ°Ρ„Π΅Π΄Ρ€Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ взаимодСйствия ΠΏΡ€ΠΈ ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΊΠ΅ спСциалистов с Π²Ρ‹ΡΡˆΠΈΠΌ мСдицинским ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅

    FrΓ©chet mimo-filters

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    МСдианная Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΡ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΠ»Π° ΡˆΠΈΡ€ΠΎΠΊΠΎΠ΅ распространСниС ΠΏΡ€ΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ скалярных ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ Π² качСствС ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ, ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‰ΠΈΡ… ΠΏΠ΅Ρ€Π΅ΠΏΠ°Π΄Ρ‹ яркости. Главная идСя ΠΌΠ΅Π΄ΠΈΠ°Π½Π½ΠΎΠΉ Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ состоит Π² Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎ Ρ†Π΅Π½Ρ‚Ρ€Π°Π»ΡŒΠ½Ρ‹ΠΉ пиксСль ΡΠΊΠ°Π½ΠΈΡ€ΡƒΡŽΡ‰Π΅ΠΉ маски замСняСтся ΠΌΠ΅Π΄ΠΈΠ°Π½ΠΎΠΉ всСх пиксСлСй, содСрТащихся Π² маскС. Π’ этой Ρ€Π°Π±ΠΎΡ‚Π΅ идСя Ρ€Π°ΡΡˆΠΈΡ€ΡΠ΅Ρ‚ΡΡ Π½Π° Π²Π΅ΠΊΡ‚ΠΎΡ€Π½ΠΎ-Π·Π½Π°Ρ‡Π½Ρ‹Π΅ изобраТСния. Π Π°ΡΡˆΠΈΡ€Π΅Π½ΠΈΠ΅ основываСтся Π½Π° Ρ‚ΠΎΠΌ Ρ„Π°ΠΊΡ‚Π΅, Ρ‡Ρ‚ΠΎ ΠΌΠ΅Π΄ΠΈΠ°Π½Π° являСтся Ρ‚Π°ΠΊΠΆΠ΅ Ρ‚ΠΎΡ‡ΠΊΠΎΠΉ, которая ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·ΠΈΡ€ΡƒΠ΅Ρ‚ сумму расстояний ΠΌΠ΅ΠΆΠ΄Ρƒ Π½Π΅ΠΉ ΠΈ всСми скалярными пиксСлями Π²Π½ΡƒΡ‚Ρ€ΠΈ маски. Π’ΠΎΡ‡ΠΊΠΎΠΉ Π€Ρ€Π΅ΡˆΠ΅ ΠΊΠΎΠ½Π΅Ρ‡Π½ΠΎΠ³ΠΎ мноТСства Π²Π΅ΠΊΡ‚ΠΎΡ€Π½ΠΎ-Π·Π½Π°Ρ‡Π½Ρ‹Ρ… пиксСлСй Π² Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌ мСтричСском пространствС (с Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΠΌΠ΅Ρ‚Ρ€ΠΈΠΊΠΎΠΉ) являСтся Ρ‚Π°ΠΊΠΎΠΉ Π²Π΅ΠΊΡ‚ΠΎΡ€, сумма расстояний Π΄ΠΎ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ ΠΎΡ‚ всСх Π²Π΅ΠΊΡ‚ΠΎΡ€Π½Ρ‹Ρ… пиксСлСй (находящихся Π²Π½ΡƒΡ‚Ρ€ΠΈ маски) ΠΈΠΌΠ΅Π΅Ρ‚ минимальноС Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅. Π’ Π΄Π°Π½Π½ΠΎΠΉ ΡΡ‚Π°Ρ‚ΡŒΠ΅ понятиС Ρ‚ΠΎΡ‡ΠΊΠΈ Π€Ρ€Π΅ΡˆΠ΅ Ρ€Π°ΡΡˆΠΈΡ€ΡΠ΅Ρ‚ΡΡ Π΄ΠΎ ΠΎΠ±ΠΎΠ±Ρ‰Π΅Π½Π½ΠΎΠΉ ΠΌΠ΅Π΄ΠΈΠ°Π½Ρ‹ Π€Ρ€Π΅ΡˆΠ΅, Π² ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ агрСгация расстояний, Π° Π½Π΅ ΠΈΡ… сумма. Π‘ΠΎΠ»Π΅Π΅ Ρ‚ΠΎΠ³ΠΎ, ΠΏΡ€ΠΈ ΠΎΠ±ΠΎΠ±Ρ‰Π΅Π½ΠΈΠΈ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ Π½Π΅ классичСскиС расстояния, Π° ΠΈΡ… Π°Π³Ρ€Π΅Π³Π°Ρ†ΠΈΠΎΠ½Π½Ρ‹Π΅ обобщСния. ΠžΠ±ΠΎΠ±Ρ‰Π΅Π½Π½Ρ‹Π΅ ΠΌΠ΅Π΄ΠΈΠ°Π½Ρ‹ Π€Ρ€Π΅ΡˆΠ΅ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ для построСния Π½ΠΎΠ²Ρ‹Ρ… ΠΌΠ΅Π΄ΠΈΠ°Π½Π½Ρ‹Ρ… MIMO-Ρ„ΠΈΠ»ΡŒΡ‚Ρ€ΠΎΠ²
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