Author name code: severny ADS astronomy entries on 2022-09-14 author:"Severny, A.B." ------------------------------------------------------------------------ Title: Observations of Solar Global Oscillations 1983-1985 and Potential Influence of Terrestrial Sources of Errors Authors: Severny, A. B.; Kotov, V. A.; Tsap, T. T. Bibcode: 1988IAUS..123...33S Altcode: The Earth atmospheric pressure fluctuations in the 5-min range of periods are analysed and their influence on observations of solar 5-min oscillations are briefly discussed. New series of observations confirmed the oscillations of the Sun with period of 160.010 min. Title: On the Ultraviolet Background Radiation of the Galaxy Authors: Zvereva, A.; Severny, A.; Granitsky, L.; Courtes, G.; Cruvellier, P.; Hua, C. T. Bibcode: 1985IAUS..106..237Z Altcode: Observations of the far-UV spectrum (1300 - 1800 Å) of the sky background at different galactic latitudes are presented. The measurements were made with the photoelectric spectrometer ("Galaktika") on board the "Prognoz-6" satellite. The highly elongated orbit of the satellite permitted corrections for scattered Lα-light. The contribution of stars was eliminated using fluxes measured in the TD-I and OAO-2 experiments. Title: Photometric calibration and first results obtained with the UFT experiment on board the astron satellite Authors: Hua, C. T.; Courtes, G.; Cruvellier, P.; Huguenin, D.; Severny, A. B.; Boyarchuk, A.; Gershberg, R.; Petrov, P.; Pronik, G.; Tovmassian, R. Bibcode: 1985AdSpR...5c.201H Altcode: 1985AdSpR...5..201H The UV telescope of 30 cm diameter equipped with a three channel scanner spectrometer aboard the highly eccentric orbit space station ``ASTRON'' is described

Absolute calibration of the whole device is performed using spectra of standard stars, of which absolute values were obtained by TDI or IUE experiments. Several photometric controls have been made on the stability of the equipment after one year of operation which demonstrate reliability of some first results obtained by the UFT.

The sensitivity curve of the spectrophotometric system has been observed with a reproducibility of 2σ = 10% or better.

The repeated observation of one star (139 Tau) indicates that the overall performance exhibits the same quality after one year in orbit. The low resolution mode (Δ λ = 28 Å) leads to a powerful new investigation of faint extended sources. Title: Ten years observations of long-period oscillations of the Sun Authors: Kotov, V. A.; Severny, A. B.; Tsap, T. T. Bibcode: 1984ESASP.220..189K Altcode: 1984ESPM....4..189K The measurements of Doppler shift of a Fraunhofer spectral line were performed over 10 yr. The power spectrum of the data shows a major peak at 160m period which is interpreted as multiple resonance of gravity modes of the Sun. This 160m oscillation reveals remarkable phase stability during the entire decade. It is noted that true pattern of the power spectrum can be seriously spoiled by Earth sources of noise. The importance of analysis of oscillations seen in a telluric line is emphasized. Title: On the Stability of Solar Gravity Mode Oscillations and the Structure of the Sun Authors: Kosovichev, A. G.; Severny, A. B. Bibcode: 1984LIACo..25..278K Altcode: 1984tpss.conf..278K; 1984trss.conf..278K No abstract at ADS Title: On the Excitation of Oscillations of the Sun - Numerical Models Authors: Kosovichev, A. G.; Severny, A. B. Bibcode: 1983SoPh...82..323K Altcode: 1983IAUCo..66..323K Numerical solutions of the general time-dependent gas-dynamical equations in linear adiabatic approximation are given for initial conditions imitating: (a) a central perturbation, (b) a boundary perturbation (in the convective envelope), and (c) a `shrinking' of the Sun as a whole. For a variety of models of the Sun it is found that at the surface the radial component vr of velocity is much greater than the tangential component vt, and that the period T of stationary oscillations does not exceed 131m. The appearance at the surface of a g mode with period 160m is found to be improbable. Title: A Possible Interpretation of the Ultraviolet Sky Back-Ground Radiation Observed with the Space Experiment "Galaktika" Authors: Severny, A. B.; Zvereva, A. M. Bibcode: 1983ApL....23...71S Altcode: Measurements made in deep space of the intensity of ultraviolet sky background radiation, in the range of latitudes -58 deg to +27 deg, show a correlation between that intensity and enhanced soft X-ray brightness, and also with deficient neutral hydrogen density. A pronounced decrease in intensity from 1400 to 1800 A is apparent in dark, higher latitude regions in Pisces, while a rapid increase in intensity over that range is observed in low galactic latitudes. A coincidence in position between radio spurs and several regions of ultraviolet emission is also noted. A possible explanation of background ultraviolet radiation in high-latitude areas as emission from the hot gas of supernova remnants is discussed. Title: Gamma-Cygni - Magnetic Periodic Star Authors: Plachinda, S. I.; Severny, A. B.; Dmitrienko, E. S. Bibcode: 1983mvs..conf..193P Altcode: No abstract at ADS Title: Gamma CYG - Magnetic Periodic Star? Authors: Plachinda, S. I.; Severny, A. B.; Dmitrenko, E. S. Bibcode: 1982CoKon..83..193P Altcode: No abstract at ADS Title: Global Oscillations of the Sun Authors: Severny, A. B.; Kotov, V. A.; Tsap, T. T. Bibcode: 1981IGAFS..56...11S Altcode: No abstract at ADS Title: Shaking Down the Sun's Long-Period Vibes Authors: Kotov, V. A.; Severny, A. B.; Tsap, T. T.; Scherrer, P. H.; Wilcox, J. M.; Fossat, E.; Grec, G.; Pomerantz, M. Bibcode: 1980SciN..118..100K Altcode: No abstract at ADS Title: Solar oscillations and the problem of the internal structure of the sun Authors: Severny, A. B.; Kotov, V. A.; Tsap, T. T. Bibcode: 1979AZh....56.1137S Altcode: Observations of solar oscillations made over a period of five years are reviewed, and implications of the observations for the physics of the solar interior are indicated. An analysis of over 1000 hours of solar observations from 1974 to 1978 is presented which shows the observed oscillations of the solar radius to be real, with a period of 160.010 + or - 0.004 min and a Doppler shift amplitude of 1 m/sec. The slow drift of the phase of the velocity maximum has been observed, together with the dependence of the amplitude on the phase of the solar rotation period. Synchronous oscillations of the solar magnetic field and radio emission have also been found to be synchronous to the brightness oscillations, and the oscillations have been seen to disappear occasionally, possibly due to the passage of a supergranule across the solar disk. It is suggested that the oscillations represent gravitational quadrupole oscillations, and could serve as a means for nonradiative heat transfer from within the sun and thus alleviate the problem of low neutrino flux. Title: Soviet short-term forecasts of active region evolution and flare activity Authors: Severny, A. B.; Stepanyan, N. N.; Steshenko, N. V. Bibcode: 1979stp.....1...72S Altcode: The structure and strength of the magnetic fields of the Sun's active regions were studied to obtain information for short term forecasting. Intensity forecasts were then made using the information obtained on the gradients of the magnetic fields between sunspots of opposite polarity. A comparison of flare forecasting methods is presented. Title: Observations of solar oscillations with periods of 160 minutes Authors: Scherrer, P. H.; Wilcox, J. M.; Kotov, V. A.; Severny, A. B.; Tsap, T. T. Bibcode: 1979Natur.277..635S Altcode: Severny et al. (1976) have reported oscillations of the sun with a period near 160 min. A description is presented of observations made at the Stanford Solar Observatory during the time from 1975 to the present which seem to support the reports by Severny et al. At Stanford the relative velocity between a central circular area of radius 0.5 solar radius on the solar disk and most of the remaining area of the solar disk is measured. A superposed epoch analysis of the observations using a period of 160 min is discussed. An apparent agreement in phase between the obtained observational data and those reported by Severny et al. tends to support the interpretation that solar oscillations are being observed. Title: Some Problems of the Nonstability of the Sun and the Stars Authors: Severny, A. B. Bibcode: 1978ppeu.book..343S Altcode: 1978ppeu.book..351S; 1978ppeu.conf..343S No abstract at ADS Title: Further Progress in Observations of Solar Oscillations Authors: Severny, A. B.; Kotov, V. A.; Tsap, T. T. Bibcode: 1978pfsl.conf..123S Altcode: 1978ESPM....2..123S No abstract at ADS Title: Orbiting solar telescope "Salyut-4" station. Authors: Bruns, A. V.; Grechko, G. M.; Gubarev, A. A.; Gubarjev, A. A.; Klimuk, P. I.; Sevast'yanov, V. I.; Sevastjanov, V. I.; Severnyj, A. B.; Severny, A. B.; Steshenko, N. V. Bibcode: 1977AcAau...4.1121B Altcode: The orbiting solar telescope on Salyut-4 (F = 2.5 m, d = 250 mm) produces images of the sun on the entrance slit of a stigmatic two-grating spectrograph (R1 = 1 m, N1 = 1200 lines/mm; R2 = 0.5 m, N2 = 2400 lines/mm, dispersion 16 A/mm, spectral resolution 0.3 A). The automatic system keeps the observed solar features on the slit of the spectrograph with an accuracy of 3-4 arc sec. The far UV-spectra (970-1400 A) of solar flares, brightenings, flocculi and prominences were photographed and fresh coatings of mirrors were made during the flight. Title: How Flares Can Be Understood (Proceedings of the Meeting `How Can Flares be Understood?', held during the 16th General Assembly of the IAU in Grenoble, France, on 27 August, 1976.) Authors: Severny, A. B. Bibcode: 1977SoPh...53..233S Altcode: No abstract at ADS Title: Comments on Salyut-4 Observations of Active Regions on the Sun (Proceedings of the Meeting `How Can Flares be Understood?', held during the 16th General Assembly of the IAU in Grenoble, France, on 27 August, 1976.) Authors: Severny, A. B. Bibcode: 1977SoPh...53..285S Altcode: No abstract at ADS Title: The mean magnetic field of the Sun: Method of observation and relation to the interplanetary magnetic field Authors: Scherrer, Philip H.; Wilcox, John M.; Kotov, Valeri; Severny, A. B.; Howard, Robert Bibcode: 1977SoPh...52D...6S Altcode: The mean solar magnetic field as measured in integrated light has been observed since 1968. Since 1970 it has been observed both at Hale Observatories and at the Crimean Astrophysical Observatory. The observing procedures at both observatories and their implications for mean field measurements are discussed. A comparison of the two sets of daily observations shows that similar results are obtained at both observatories. A comparison of the mean field with the interplanetary magnetic polarity shows that the IMF sector structure has the same pattern as the mean field polarity. Title: Observations of resonance-line polarization in the solar EUV. Authors: Stenflo, J. O.; Dravins, D.; Öhman, Y.; Wihlborg, N.; Bruns, A.; Prokof'ev, V. K.; Severnyj, A.; Severny, A.; Zhitnik, I. A.; Biverot, H.; Stenmark, L. Bibcode: 1977ROLun..12..147S Altcode: No abstract at ADS Title: Salyut 4 Observations of Active Regions on the Sun Authors: Bruns, A. V.; Grechko, G. M.; Gubarev, A. A.; Klimuk, P. I.; Sevastyanov, V. I.; Severny, A. B.; Steshenko, N. V. Bibcode: 1977ebhs.coll..333B Altcode: 1977IAUCo..36..333B No abstract at ADS Title: Observations of Oscillations of the Entire Sun Authors: Kotov, V. A.; Severny, A.; Tsap, T. Bibcode: 1976IAUTB..16..244K Altcode: 1976IAUT...16B.244K No abstract at ADS Title: Circular Polarization of CYG X-1, SCO X-1 and 3c 273 Authors: Severny, A. B.; Kuvshinov, V. M. Bibcode: 1975IAUS...67..481S Altcode: No abstract at ADS Title: Transit of Mercury across the solar disk Authors: Efanov, V. A.; Moiseev, I. G.; Severny, A. B. Bibcode: 1974Natur.249..330E Altcode: THE transit of Mercury across the solar disk on May 9, 1970 (4 h 20 min 30 s - 11 h 12 min 0 s UT), was observed by recording the radio emission at a wavelength of 8 mm using a 22-m paraboloid radio telescope1. The pencil beam of the antenna is of width D = 1'.6 and the sensitivity of the radiometer ~= 1.5 K. The antenna was steered so that Mercury was in the centre of the beam. Mercury obscures the inhomogeneities of radio emission when passing across the solar disk and some fluctuations of the flux of radio emission can occur. The characteristic time of these fluctuations and their amplitude characterise the sizes and temperatures of condensations respectively. In Fig. 1 we show a sample of original (averaged over 15 s) records of fluctuations during the passage of Mercury across the relatively active regions on the disk. Similar records, but with slightly slower fluctuations of smaller amplitude have been obtained for quiet regions of the disk. The autocorrelation curves for active (A) and quiet (Q) regions (Fig. 2) reveal details of the nature of the emission. Title: Space observations of night-sky brightness. Authors: Severny, A. B.; Terez, E. I.; Zvereva, A. M. Bibcode: 1974rnuo.confC..25S Altcode: No abstract at ADS Title: Preliminary results obtained with an astrophotometer on Lunokhod 2. Authors: Severnyj, A. B.; Severny, A. B.; Terez, E. I.; Zvereva, A. M. Bibcode: 1974spre.conf..603S Altcode: No abstract at ADS Title: The Comparison of the Magnetographic Magnetic Field Measured in Different Spectral Lines Authors: Gopasyuk, S. I.; Kotov, V. A.; Severny, A. B.; Tsap, T. T. Bibcode: 1973SoPh...31..307G Altcode: The discrepancies in the values of longitudinal magnetic field obtained from magnetographic records in different spectral lines are considered. On the basis of extensive data including 60 pairs of magnetographic maps for 11 spectral lines, obtained simultaneously for one of these lines and λ6103 with the aid of the Crimean double channel magnetograph, the following conclusions have been reached. The relative field strength (6103) depends partly on the distance from the center of the disk (Figure 4) and mainly on the magnetic sensitivity of the line gλ2 (Figure 3), pointing to the primary role of saturation effect. The possible influence of line asymmetry on these discrepancies is also suggested. Title: Development of methods of solar flare forecasting. Authors: Severnyj, A. B.; Severny, A. B.; Steshenko, N. V. Bibcode: 1973spre.conf..809S Altcode: 1973spre....2..809S No abstract at ADS Title: Comparisons of the Mean Solar Magnetic Field and the Interplanetary Field Observed During 1969 Authors: Scherrer, P. H.; Wolcox, J. M.; Severny, A. B. Bibcode: 1972BAAS....4S.390S Altcode: No abstract at ADS Title: Local magnetic fields on the sun. Authors: Severnyj, A. B.; Severny, A. B. Bibcode: 1972sstp.conf...38S Altcode: No abstract at ADS Title: Local Magnetic Fields on the Sun Authors: Severny, A. B. Bibcode: 1972ASSL...29...38S Altcode: 1972sun..conf...38S No abstract at ADS Title: Methods for the Forecasting of Solar Flares Authors: Severny, A. B.; Steshenko, N. V. Bibcode: 1972ASSL...29..173S Altcode: 1972sun..conf..173S No abstract at ADS Title: Methods for the forecasting of solar flares. Authors: Severnyj, A. B.; Severny, A. B.; Steshenko, N. V. Bibcode: 1972sstp.conf..173S Altcode: No abstract at ADS Title: The general magnetic field of the sun and its changes with time Authors: Severny, A. Bibcode: 1972VA.....13..135S Altcode: 1971VA.....13..135S No abstract at ADS Title: Extra-atmospheric observations of the night-sky brightness at the sputniks Cosmos 51 and Cosmos 213. I. Method and calibration of the measurements. Authors: Dimov, N. A.; Severnyj, A. B.; Severny, A. B. Bibcode: 1972IzKry..45...53D Altcode: No abstract at ADS Title: On the Circular Polarization of Some Peculiar Objects Authors: Nikulin, N. S.; Kuvshinov, V. M.; Severny, A. B. Bibcode: 1971ApJ...170L..53N Altcode: Circular polarization of several peculiar objects (in particular, X-ray sources) has been measured with the stellar magnetograph of the 104-inch Crimean reflecting telescope. Circular polarization greater than or equal to 1 percent is suspected in the nuclei of the Seyfert galaxies NGC 4151 and NGC 1068, and in the quasar SC 273. Rapid variations of the amount and sense of circular polarization are observed in the X-ray source Sco X-1 with time scales of the order of 30 minutes. An appreciable effect is also detected in the nucleus of the planetary nebula +3003639. Title: Time Fluctuations of the General Magnetic Field of the Sun Authors: Severny, A. B. Bibcode: 1971QJRAS..12..363S Altcode: No abstract at ADS Title: Comparison of the mean photospheric magnetic field and the interplanetary magnetic field. Authors: Wilcox, J. M.; Scherrer, P. H.; Severny, A.; Colburn, D. S. Bibcode: 1971BAAS....3R.265W Altcode: No abstract at ADS Title: Determination of solar magnetograph zero level using interplanetary magnetic field observations. Authors: Scherrer, P. H.; Wilcox, J. M.; Severny, A.; Colburn, D. S. Bibcode: 1971BAAS....3Q.264S Altcode: No abstract at ADS Title: The Magnetic Filds and the Polarization of Radio Emission in the Active Center of October 1968 Authors: Erushev, N.; Severny, A. B.; Tsap, T. Bibcode: 1971IAUS...43..428E Altcode: No abstract at ADS Title: On the Time Fluctuations of Magnetic Fields Authors: Severny, A. Bibcode: 1971IAUS...43..340S Altcode: No abstract at ADS Title: The Polar Field Time and Time Fluctuations of the General Magnetic Field of the Sun Authors: Severny, A. B. Bibcode: 1971IAUS...43..675S Altcode: No abstract at ADS Title: Electric Currents Connected with the Proton Flares of 7 July and 2 September, 1966 Authors: Severny, A. B. Bibcode: 1971IAUS...43..417S Altcode: No abstract at ADS Title: Comparison of the Mean Photospheric Magnetic Field and the Interplanetary Magnetic Field Authors: Severny, A.; Wilcox, J. M.; Scherrer, P. H.; Colburn, D. S. Bibcode: 1970SoPh...15....3S Altcode: The mean photospheric magnetic field of the sun seen as a star has been compared with the interplanetary magnetic field observed with spacecraft near the earth. Each change in polarity of the mean solar field is followed about 4 1/2 days later by a change in polarity of the interplanetary field (sector boundary). The scaling of the field magnitude from sun to near earth is within a factor of two of the theoretical value, indicating that large areas on the sun have the same predominant polarity as that of the interplanetary sector pattern. An independent determination of the zero level of the solar magnetograph has yielded a value of 0.1±0.05 G. An effect attributed to a delay of approximately one solar rotation between the appearance of a new photospheric magnetic feature and the resulting change in the interplanetary field is observed. Title: The Weak Magnetic Fields of Some Bright Stars Authors: Severny, A. Bibcode: 1970ApJ...159L..73S Altcode: The technique of the solar magnetograph applied at the coud spectrograph of the 2.6-m reflecting telescope of the Crimean Astrophysical Observatory for the measurement of stellar magnetic fields has recently revealed weak longitudinal magnetic fields ( gauss) of some bright stars. Title: On the Asymmetry of Moustaches Authors: Koval, A. N.; Severny, A. B. Bibcode: 1970SoPh...11..276K Altcode: A careful photometry of moustaches is carried out to reveal asymmetry of their emission in the far wings (Δλ ⩾ 1 Å), if it exists. The presence of background continuous emission in spectra of moustaches demands special care with the photometry, and makes the current method of comparison of rest-intensities inadequate. The other sources of errors are also discussed. The blue asymmetry, as a systematic difference of intensities between the blue and the red wing shows itself in some cases, being 2-3 times larger than the probable errors. In most moustaches investigated, the accompanying background continuous emission shows a rapid increase to the violet. Title: The Night Sky Brightness Measured from Satellites Kosmos 51 and 213 Authors: Dimov, N. A.; Severny, A. B.; Zvereva, A. M. Bibcode: 1970IAUS...36..325D Altcode: No abstract at ADS Title: Solar flares and magnetic fields. Authors: Severny, A. Bibcode: 1970SSRv....1...92S Altcode: No abstract at ADS Title: On the Contribution of Solar Activity to the Ultra Violet Spectrum of the Sun Authors: Bruns, A. V.; Prokofiev, V. K.; Severny, A. B. Bibcode: 1970IAUS...36..256B Altcode: No abstract at ADS Title: Is the Sun a Magnetic Rotator? Authors: Severny, A. Bibcode: 1969Natur.224...53S Altcode: MEASUREMENTS of the general (polar) magnetic field of the Sun1 show that since September 1964 the Sun has behaved on average like a dipole with a negative field strength at the North Pole and an approximately equal positive field at the South Pole (the mean ranging from 0.5 to 1.0 G). But because of a bias toward the area of the negative polarity in the northern hemisphere, the net magnetic flux was on average negative most of the time; in this sense the Sun behaved like a ``monopole''. There were large deviations from the mean, however; for example, sometimes both poles had a field of the same sign (in February-April 1965), and during the first half of 1964 the mean strength at the South Pole was zero. Title: The magnetic fields and proton flare of 7 July 1966. Authors: Severny, A. Bibcode: 1969AIQSY...3...11S Altcode: No abstract at ADS Title: The fine structure of solar magnetic fields Authors: Severny, A. Bibcode: 1969csph.conf...51S Altcode: No abstract at ADS Title: Solar flares and magnetic fields Authors: Severny, A. B. Bibcode: 1969sfsr.conf...38S Altcode: No abstract at ADS Title: Sonneneruptionen und Magnetfelder. Authors: Severny, A. Bibcode: 1969WisIE..11..745S Altcode: No abstract at ADS Title: On the determination of night sky brightness from a space vehicle. Authors: Dimov, N. A.; Severny, A. B. Bibcode: 1969spre.conf..228D Altcode: No abstract at ADS Title: Magnetic Fields and Flares in the Region CMP 20 September 1963 Authors: Moreton, G. E.; Severny, A. B. Bibcode: 1968SoPh....3..282M Altcode: The position of bright knots of 30 flares at their very beginning relative to the high-resolution isogauss maps of the longitudinal component (H∥) and maps of the transverse component (H⊥) of magnetic field are considered for seven days during the passage of the active and large spot group in Sept. 1963 (see Table I and maps on Figures 1-8). Title: Comparison of 8-MM Solar Radio Features with Local Magnetic Fields and Chromospheric Features Authors: Efanov, V.; Moiseev, I.; Severny, A. Bibcode: 1968IAUS...35..588E Altcode: No abstract at ADS Title: On the Lithium Abundance in Sunspots and the Undisturbed Solar Atmosphere Authors: Dubov, E.; Prokof'ev, V.; Severny, A. Bibcode: 1968HiA.....1..247D Altcode: No abstract at ADS Title: Preliminary Communication on the Short-Period Oscillations of Solar Magnetic Fields Authors: Severny, A. B. Bibcode: 1968IAUS...35..233S Altcode: No abstract at ADS Title: Space Observations Needed for Improving Our Knowledge of Solar Flares Authors: Severny, A. B. Bibcode: 1968HiA.....1..530S Altcode: No abstract at ADS Title: Mass motions in flares and moustaches indicated by special spectral features, Introductory lecture Authors: Severny, A. B. Bibcode: 1968mmsf.conf...71S Altcode: No abstract at ADS Title: The Crimean Astrophysical Observatory Authors: Severny, A.; Stepanyan, N. Bibcode: 1967SoPh....1..484S Altcode: No abstract at ADS Title: Fine structure of solar magnetic fields Authors: Severny, A. Bibcode: 1967maco.conf..211S Altcode: No abstract at ADS Title: Magnetic Fields and Flares in the Region with CMP 20 September 1963. Authors: Moreton, G. E.; Severny, A. B. Bibcode: 1966AJ.....71R.172M Altcode: Photoelectric measurements of both the longitudinal and transverse components of magnetic fields were made daily during 17-24 September, using the line Fe I A5250; the resultant magnetograms refer to fields <1000 G. The aperture corresponded to 2" X 4"; image motion may occasionally enlarge this resolution to about 6" x 8". Careful registration of the magnetograms, photoheliograms, and HCL filtergrams ensures accuracy of flare positions to within the resolution of the magnetograms. Emphasis is placed on the position of the emission knots that represent the first brightening of a flare: (1) For 27 flares, 70% had first brightenings limited to two or three points or knots, that occur nearly simultaneously in widely separated parts of the activity center. The initial knots are separated by the magnetic neutral line that divides regions of opposite polarity. Only two flares had all their initial knots in a region of one polarity. (2) At least one of the initial knots of a flare tends to lie humediately adjacent to the neutral line, and in a region of greatest longitudinal field gradient. For 60 separate knots, 80% were situated such that the distance from the center of the knot to the neutral line was less than 10". (For comparison, the distance between the three umbra composing the region was about 60"). Only four flares had an initial knot overlapping the neutral line. (3) From 17-21 Septen~~er the flaring tends to favor two distinct centers in the region. One center corresponds approximately to where the transverse field vectors appear to cross or l~erge. The resulting bifurcated appearance is suggestive of crossed transverse fields. Other flares tend to occur in regions of strong, oppositely directed, electric currents. Title: Activité Solaire (Solar Activity) Authors: Severny, A. B. Bibcode: 1966IAUTB..12..143S Altcode: No abstract at ADS Title: Observations of Star Fields Made Beyond the Atmosphere (With 3 Figures) Authors: Dimov, N. A.; Severny, A. B. Bibcode: 1966lil..conf..113D Altcode: No abstract at ADS Title: On the changes of magnetic fields connected with flares Authors: Severny, A. B. Bibcode: 1965IAUS...22..358S Altcode: No abstract at ADS Title: Spectra of Solar Activity Regions Authors: Severny, A. Bibcode: 1965ASSL....1..221S Altcode: 1965sosp.conf..221S No abstract at ADS Title: Introductory report Authors: Severny, A. B. Bibcode: 1965IAUS...22..238S Altcode: No abstract at ADS Title: Solar Magnetic Fields Authors: Severny, A. Bibcode: 1964SSRv....3..451S Altcode: This paper is a review of our observational knowledge on solar magnetic fields. In Section 1 we make an attempt to summarize all observations of the general magnetic field (m.f.) of the Sun. Section 2 deals with the local m.f. at low latitudes and their connection with some features on the disk. The m.f. of sunspots and their peculiar character are considered in Section 3. The last section (4) is concerned with m.f. in sunspot groups, their changes and connections with solar activity. Title: Solar Flares Authors: Severny, A. B. Bibcode: 1964ARA&A...2..363S Altcode: No abstract at ADS Title: On the Behavior of Magnetic Fields Associated with Solar Flares Authors: Severny, A. B. Bibcode: 1964NASSP..50...95S Altcode: 1964psf..conf...95S No abstract at ADS Title: Solar Magnetic Fields and the Great Flare of July 16, 1959. Authors: Howard, Robert; Severny, A. Bibcode: 1963ApJ...137.1242H Altcode: Ten magnetic maps of the active region on several days at the time of the 3+ flare of July 16, 1 were obtained at the Crimean Astrophysical Observatory. At some time during a 15-hour interval wil which the flare occurred, the higher magnetic fields near and inside the sunspots decreased by near factor of 3. The resulting loss of magnetic energy amounted to about 1032 ergs, which is the estim energy emitted in the form of cosmic rays from flares. Magnetic observations made of the active re at Mount Wilson during the course of the flare could not have shown the changes in the stronger fi seen in the Crimean observations. Title: Magnetically Active Regions on the Sun Authors: Severny, A. B. Bibcode: 1962IAUTB..11..426S Altcode: No abstract at ADS Title: Measurement of magnetic fields in solar prominences Authors: Zirin, H.; Severny, A. Bibcode: 1961Obs....81..155Z Altcode: No abstract at ADS Title: The motions and magnetic fields in the undisturbed solar atmosphere (outside active regions) Authors: Severny, A. B. Bibcode: 1960IAUS...12..327S Altcode: No abstract at ADS Title: Transient velocity fields in the lower solar atmosphere - Summary-introduction Authors: Severny, A. B. Bibcode: 1960IAUS...12..403S Altcode: 1960IAUS...12S..... No abstract at ADS Title: On the penetration of solar magnetic fields into the chromosphere Authors: Severny, A. B.; Bumba, V. Bibcode: 1958Obs....78...33S Altcode: No abstract at ADS Title: The Processes in Active Regions on the Sun and Electromagnetics Authors: Severny, A. B. Bibcode: 1958IAUS....6..114S Altcode: No abstract at ADS Title: Buchbesprechung über: Theoretical Astrophysics (Ref. G. Traving) Authors: Ambartzumyan, V. A.; Mustel, E. R.; Severny, A. B.; Sobolev, V. V. Bibcode: 1958ZA.....46..280A Altcode: No abstract at ADS Title: Fine structure in solar spectra Authors: Severny, A. B. Bibcode: 1956Obs....76..241S Altcode: No abstract at ADS Title: Crimean Astrophysical Observatory Authors: Severny, A. B. Bibcode: 1955S&T....14..500S Altcode: No abstract at ADS Title: Investigation of flares and prominences at the crimean astrophysical observatory Authors: Severny, A. B. Bibcode: 1955VA......1..701S Altcode: A survey is given of some of the results obtained at the Crimean Obsrvatory during the past five years, referring to the hydrogen spectrum of flares, the development of prominences and flares, and allied problems. Title: On the influence of the concentration of energy source on the character of stellar configuration Authors: Severny, A. B. Bibcode: 1937MNRAS..97..699S Altcode: No abstract at ADS Title: On Stellar configurations with core possessing a high density of energy Authors: Severny, A. B. Bibcode: 1936MNRAS..96..219S Altcode: No abstract at ADS