Author name code: bruzek ADS astronomy entries on 2022-09-14 author:"Bruzek, Anton" ------------------------------------------------------------------------ Title: Der Mond - Ein Atlas des Mondes, veröffentlicht in Zusammenarbeitmit der Royal Astronomical Society. Authors: Moore, P.; Bruzek, A. Bibcode: 1982demo.book.....M Altcode: No abstract at ADS Title: Landolt-Börnstein. Numerical data and functional relationships in science and technology. New series. Group VI: Astronomy, astrophysics and space research. Volume_2. Astronomy and astrophysics. Extension and supplement to Volume_1. Subvolume a: methods - constants - solar system. Authors: Hellwege, K. -H.; Schaifers, K.; Voigt, H. H.; Wolf, R.; Durrant, C. J.; Behr, A.; West, R. M.; Solf, J.; Weigelt, G.; Schmahl, G.; Staubert, R.; Trümper, J.; Lemke, D.; Hachenberg, O.; Enslin, H.; Fricke, W.; Bruzek, A.; Gondolatsch, F.; Ip, W. -H.; Axford, W. I.; Schubart, J.; Jessberger, E. K.; Rahe, J.; Fechtig, H.; Leinert, C.; Grün, E.; Pilipp, W.; Scholer, M.; Palme, H.; Suess, H. E.; Zeh, H. D.; Kirsten, T. Bibcode: 1981lndf.book.....H Altcode: No abstract at ADS Title: On a Peculiar Type of Filament Activation Authors: Bruzek, A. Bibcode: 1980IAUS...91..203B Altcode: No abstract at ADS Title: Post-flare Hα plage formation Authors: Bruzek, A. Bibcode: 1979SoPh...61...35B Altcode: Observations on the permanent transformation during a flare of a fibril region into a stable plage region are presented and interpreted as flare-associated re-orientation of the chromospheric magnetic field. Title: Small scale motions in the chromosphere and in the corona. Authors: Bruzek, A. Bibcode: 1979ssms.conf...79B Altcode: No abstract at ADS Title: Flares and Associated Phenomena Authors: Dodson-Prince, H. W.; Bruzek, A. Bibcode: 1977ASSL...69...81D Altcode: 1977igss.conf...81D Solar Flare Thermal Flare Flare Area Flare Importance or Flare Class Comprehensive Flare Index (CFI) Flash Phase Flare Kernels Plage Flare Two-Ribbon Flare Filament-Associated Flares Homologous Flares Limb Flares Flare-Associated Phenomena Moreton Wave White-Light Flare X-Ray Flare Hard X-Ray Flare EUV Bursts Flare Gamma Ray Emission Particle Flare or Energetic Flare Flare Mechanisms Title: Illustrated glossary for solar and solar terrestrial physics Authors: Bruzek, A.; Durrant, C. J. Bibcode: 1977ASSL...69.....B Altcode: 1977igss.conf.....B; 1977assl...69.....B This book collects all terms of relevance to solar and solar-terrestrial physics that appear in current English-language literature. Each term or group of related terms is given a concise phenomenological and quantitative description, including the relationship to other phenomena and an interpretation in terms of physical processes. The major topics of the glossary encompass the solar interior, the solar cycle, solar rotation, large-scale circulation, nonspot magnetic fields, the quiet photosphere and chromosphere, the transition region, the solar corona, active regions, spots and faculae, flares and associated phenomena, prominences, solar radio emission, the solar wind and interplanetary medium, solar-terrestrial physics, and general theoretical terms. Specific terms defined include solar neutrinos, convective theory, the solar activity cycle, dynamos, the general solar magnetic field, the quiet sun, granulation and supergranulation, coronal holes, sunspot groups, solar activity indexes, the Evershed and Wilson effects, X-ray flares, EUV bursts, particle flares, prominence phenomenology, radio noise storms, solar radio bursts, macro/microturbulence, solar-wind models, geomagnetic indexes, geomagnetic storms, radiation belts, and aurorae. Title: Spots and Faculae Authors: Bruzek, A. Bibcode: 1977ASSL...69...71B Altcode: 1977igss.conf...71B Photospheric Faculae Facular Point Polar Faculae Magnetic Knots Moving Magnetic Features (MMF) Pore Sunspot Umbra Umbral Dots Umbral Flashes Umbral Oscillations Light Bridges Penumbra Penumbral Waves Evershed Effect Wilson Effect Title: Active Regions Authors: Martres, M. J.; Bruzek, A. Bibcode: 1977ASSL...69...53M Altcode: 1977igss.conf...53M (Solar) Activity Active Region Complexes of Activity Emerging Flux Regions Ephemeral Region Sunspot Group Proper Motion (of Sunspots) Evolving Magnetic Features (EMF) Parasites or Inclusions Magnetic Inversion Line Filament Channel or Plage Couloir Chromospheric Plage Fibrils Moustache (Ellerman Bomb) Magnetic Classification of Active Regions Mt. Wilson Spot Classification Solar Activity Indices Solar Activity Data Title: Pre-Flare Energy Storage (title only) Authors: Bruzek, A. Bibcode: 1976SoPh...47..215B Altcode: No abstract at ADS Title: Book reviews Authors: de Jager, C.; van Rensbergen, Walter; Kuperus, M.; Falthammar, Carl-Gunne; Mewe, R.; Reunen, G. C. M.; Bruzek, A.; Swanenburg, B. N.; Kleczek, J.; Millman, Peter M.; Vesseur, H. J. A.; Pacini, F.; Monfils, A. Bibcode: 1976SSRv...18..541D Altcode: No abstract at ADS Title: Solar activity (Activité solaire). Authors: Newkirk, G.; Dunn, R. B.; Mehltretter, P.; MacQueen, R.; Bonnet, R. M.; White, O. R.; Fokker, A. D.; Zwaan, C.; Bruzek, A.; Durrant, C.; Grossmann-Doerth, U.; Mehltretter, J. P.; Svestka, Z.; de Feiter, L. D.; Tandberg-Hanssen, E.; Howard, R.; Stix, M.; Pneuman, G. W.; Hundhausen, A. J.; Sawyer, C.; Simon, P. Bibcode: 1976IAUTA..16b..13N Altcode: No abstract at ADS Title: Solar Active Regions and Periodicities in Solar Activity Authors: Bruzek, A. Bibcode: 1976IAUTA..16...27B Altcode: 1976IAUT...16...27B No abstract at ADS Title: K.-O. Kiepenheuer, 1910 November 10 - 1975 May 23. Authors: Bruzek, A. Bibcode: 1975SoPh...43....3B Altcode: No abstract at ADS Title: In memoriam Authors: Bruzek, A. Bibcode: 1975SoPh...43....2B Altcode: No abstract at ADS Title: Changes of the Hα Fibril Pattern during Solar Flares Authors: Bruzek, A. Bibcode: 1975SoPh...42..215B Altcode: A pattern of parallel Hα fibrils inside a network cell changed into a pattern of vertical or radial flbriles after a flare had covered the region. This may be evidence for a change of the magnetic configuration during flare occurrence. Title: K.-O. Kiepenheuer, 1910 November 10 - 1975 May 23. Authors: Bruzek, A. Bibcode: 1975S&W....14..352B Altcode: No abstract at ADS Title: The solar flare activity at the beginning of July 1974 Authors: Bruzek, A. Bibcode: 1975KlBer..18..179B Altcode: A survey of the unexpectedly high flare activity of July, 1974, is given. The flares occurred in a large spot group which developed and decayed quickly during its passage across the solar disk. Its magnetic configuration was rather complex with strong umbral magnetic fields and a high-gradient delta-configuration. The maximum optical importance of the flares was 2B while the associated X-ray bursts reached extremely high intensities, in one case 1 erg/sq cm-sec in the 1 - 8 A band. Two proton events with enhanced fluxes in the energy ranges below 30 MeV and below 60 MeV, respectively, were observed. The development of the presumable proton flare of July 3, 1974, is briefly discussed. Title: Book reviews Authors: de Jager, C.; Bruzek, A. Bibcode: 1974SoPh...34..507D Altcode: No abstract at ADS Title: Optical Evidence for Plasma Ejections and Waves in the Solar Corona Authors: Bruzek, A. Bibcode: 1974IAUS...57..323B Altcode: No abstract at ADS Title: Über das Moustache-Phänomen Authors: Bruzek, A. Bibcode: 1973MitAG..32..187B Altcode: No abstract at ADS Title: Solar Activity Authors: Bruzek, A. Bibcode: 1973lsp2.conf...39B Altcode: No abstract at ADS Title: Lectures on Space Physics 1: Cosmic Rays and Space Biophysics Authors: Bruzek, Anton; Pilkuhn, Hartmut Bibcode: 1973lsp1.conf.....B Altcode: 1973lsp1.book.....B No abstract at ADS Title: Lectures on Space Physics 2: Sun and Interplanetary Medium, Relativistic Astrophysics Authors: Bruzek, Anton; Pilkuhn, Hartmut Bibcode: 1973lsp2.conf.....B Altcode: 1973lsp2.book.....B No abstract at ADS Title: Some Observational Results on Moustaches Authors: Bruzek, Anton Bibcode: 1972SoPh...26...94B Altcode: The results of new observations of moustaches in Hα filtergrams and in Hα spectra are presented and their relations to photospheric and chromospheric phenomena are studied. The main findings and conclusions are: (1) previous results on basic data (size, brightness, lifetime, etc.) are essentially confirmed; (2) limb observations located the moustaches at the base of the structured Hα chromosphere, just above the level of the emission of Hα±1 Å. At the disk moustaches are, in general, covered by absorbing and slightly Doppler-shifted chromospheric elements which determine the Hα core in the moustache spectrum. However, absorption-free moustaches with an Hα emission core revealing a pure (true) moustache spectrum have also been found; (3) moustaches have been found to coincide with continuous facular granules; it is suggested that they are an extension of facular granules into the chromosphere rather than a low-level flare-like phenomenon. Title: On the Relation between Filaments (Prominences) and Hα Loops Authors: Bruzek, Anton Bibcode: 1972SoPh...24..118B Altcode: The relation between occurrence of Hα loops and filaments is discussed on the occasion of the observation of a new type of transient loops during a flare associated filament activation. Considering all known types of loop systems crossing neutral lines it is concluded that concurrent existence of stable filaments and Hα loops is incompatible. Title: Physics of Solar Prominences. Report on an International Colloquium Held at the German Solar Observatory, Anacapri, September 29 to October 1, 1971 Authors: Bruzek, Anton; Kuperus, Max Bibcode: 1972SoPh...24....3B Altcode: This colloquium on solar prominences - the first ever held - has shown that a major part of activity in prominence research in recent years concentrated on both observation and computation of the magnetic conditions which were found to play a crucial role for the development and the maintainance of prominences. Remarkable progress was made in fine-scale measurements of photospheric magnetic fields around filaments and in internal field measurements in prominences. In addition, important information on the structure of the magnetic fields in the chromosphere adjacent to the filaments may be derived from high resolution photographs of the Hα fine structure around filaments which have become available recently; unfortunately, an unambiguous determination of the vector field in the chromosphere is not yet possible.

It is quite clear, now, that stable filaments extend along `neutral' lines which divide regions of opposite longitudinal magnetic fields. Different types of neutral lines are possible, depending on the history and relationship of the opposite field regions. There is convincing evidence that the magnetic field in the neighbouring chromosphere may run nearly parallel to the filament axis and that there are two field components in stable prominences: an axial field dominant in the lower parts and a transverse field dominant in the higher parts.

Methods for the computation of possible prominence field configurations from measured longitudinal photospheric fields were developed in recent years. In a number of cases (e.g. for loop prominences) the observed configuration could be perfectly represented by a force-free or even a potential field; poor agreement was found between computed and measured field strengths in quiescent prominences. In order to reconcile both of them it is necessary to assume electric currents. Unambiguous solutions will not be found until measurements of the vector field in the photosphere and in the prominences are available.

The two-dimensional Kippenhahn-Schlüter model is still considered a useful tool for the study of prominence support and stability. However, a more refined model taking into account both field components and considering also thermal stability conditions is available now. It was proposed that quiescent prominences may form in magnetically neutral sheets in the corona where fields of opposite directions meet.

As for the problem of the origin of the dense prominence material there are still two opposite processes under discussion. The injection of material from below, which was mainly applied to loop prominences, has recently been considered also a possible mechanism for the formation of quiescent prominences. On the other hand, the main objections against the condensation mechanism could be removed: it was shown that (1) sufficient material is available in the surrounding corona, and that (2) coronal matter can be condensed to prominence densities and cooled to prominence temperatures in a sufficiently short time.

The energy balance in prominences is largely dependent on their fine structure. It seems that a much better radiative loss function for optically thin matter is now available. The problem of the heat conduction can only be treated properly if the field configuration is known. Very little is known on the heating of the corona and the prominence in a complicated field configuration. For the optically thick prominences the energy balance becomes a complicated radiative transfer problem.

Still little is known on the first days of prominence development and on the mechanism of first formation which, both, are crucial for the unterstanding of the prominence phenomenon. As a first important step, it was shown in high resolution Hα photographs that the chromospheric fine structure becomes aligned along the direction of the `neutral' line already before first filament appearance. More Hα studies and magnetic field measurements are badly needed.

Recent studies have shown that even in stable prominences strong small-scale internal rotational or helical motions exist; they are not yet understood. On the other hand, no generally agreed interpretation of large-scale motions of prominences seems to exist. A first attempt to explain the ascendance of prominences, the `Disparitions Brusques', as the result of a kink instability was made recently.

New opportunities in prominence research are offered by the study of invisible radiations: X-rays and meterwaves provide important information, not available otherwise, on physical conditions in the coronal surroundings of prominences; EUV observations will provide data on the thin transition layer between the cool prominence and the hot coronal plasma. Title: Properties of solar active regions. Authors: Bruzek, A. Bibcode: 1972sstp.conf...49B Altcode: No abstract at ADS Title: Properties of Solar Active Regions Authors: Bruzek, A. Bibcode: 1972ASSL...29...49B Altcode: 1972sun..conf...49B No abstract at ADS Title: Flare Associated Coronal Expansion Phenomena Authors: Bruzek, Anton; Demastus, Howard L. Bibcode: 1970SoPh...12..447B Altcode: Two classes of coronal expansion phenomena have been studied in Sacramento Peak coronal movies: Slow, slightly decelerated expansion phenomena (v=∼10− =∼ 2 km/sec) and fast, accelerated, quasi-exploding arches (v =∼ 10 - > 100 km/sec). The various phenomena were found to be associated with flares in different ways: The slow expansions were long lived post-flare phenomena initiated by the flare; the accelerated expanding arches were either (a) arches expanding prior to and apparently exploding at flare onset, or (b) arches apparently emerging from the flare (probably in its initial phase) and rapidly expanding and exploding, or (c) the expansion and disruption of (originally stable) coronal arches during occurrence of a distant flare. These expansions may be considered as evidence for corresponding flare associated changes in the coronal magnetic field. Title: Motions in Arch Filament Systems Authors: Bruzek, A. Bibcode: 1969SoPh....8...29B Altcode: A new analysis of Hα filtergrams and Hα spectra of arch filament systems (AFS) shows that material flows downwards in both branches of the arch filaments (v ≈ 50 km/sec) while the top of the arches ascends (v ≲ 10 km/sec). It is suggested that AFS are produced by the magnetic field which expands, between growing spots, into higher levels carrying material with it that subsequently slides down along the magnetic field following gravity. Title: Flare associated optical phenomena Authors: Bruzek, A. Bibcode: 1969sfsr.conf...61B Altcode: No abstract at ADS Title: Koronale Expansionsphänomene Authors: Bruzek, A. Bibcode: 1969MitAG..27..211B Altcode: No abstract at ADS Title: Strukturen um Sonnenflecken. Authors: Bruzek, A. Bibcode: 1969Umsch..69..212B Altcode: No abstract at ADS Title: Solar flares Authors: Bruzek, A. Bibcode: 1969pia..conf...71B Altcode: No abstract at ADS Title: Flares in the active region during the proton flare period of July 1966. Authors: Bruzek, A. Bibcode: 1969AIQSY...3...82B Altcode: No abstract at ADS Title: Dynamik von Hα Feinstrukturen in aktiven Gebieten der Sonne Authors: Bruzek, A. Bibcode: 1968MitAG..25..189B Altcode: No abstract at ADS Title: Bright Points (moustaches) and Arch Filaments in Young Active Regions Authors: Bruzek, A. Bibcode: 1968IAUS...35..293B Altcode: No abstract at ADS Title: On small-scale mass motion associated with flares Authors: Bruzek, A. Bibcode: 1968mmsf.conf...67B Altcode: No abstract at ADS Title: On Arch-Filament Systems in Spotgroups Authors: Bruzek, A. Bibcode: 1967SoPh....2..451B Altcode: Systems of arch-shaped filaments (AFS) occurring in the interspot region of young bipolar groups are studied. Their main characteristics are: Average length: 30000km, average width 20000km, width of individual filaments 1000-3000 km, height of arches 4-15000 km. A typical lifetime of the filaments 30 min; appreciable changes of the system occur within several hours; the lifetime of a system is about three days. - The arch-filament systems bridge the `neutral' line and connect the regions of the innermost spots of opposite polarity. Material moves along the filaments (v ∼ 25-50 km/sec) following the direction of the magnetic field, and sometimes arches are observed rising at a rate of ∼ 20 km/sec. They are very dark on the inner disk and appear either in emission or in absorption close to the solar limb. - The occurrence of `bright points' (moustaches) is found to be closely associated with AFS in young spotgroups. - The possible nature of AFS and their relation to other types of filamentary structures is discussed. Title: Physics of Solar Flares: The Energy and Mass Problem Authors: Bruzek, A. Bibcode: 1967sp...conf..399B Altcode: No abstract at ADS Title: Das Flare-Phänomen auf der Sonne Authors: Bruzek, A. Bibcode: 1966MitAG..21....7B Altcode: No abstract at ADS Title: On the Association Between Loop Prominences and Flares. Authors: Bruzek, A. Bibcode: 1964ApJ...140..746B Altcode: The evolution of loop prominence systems (LPS) and their relation to flares were studied using Ha observations from the solar limb and the solar disk. The limb observations show that a small LPS may start to develop from a flare knot several minutes after flare onset. The LPS's then grow discontinuously at a rate of the order of 10 km/sec by the formation of higher and higher loops which attain maximum heights of 40000 up to 150000 km (average valu , 83000 km); they have a characteristic lifetime of 12 hours. All LPS's so far detected on the disk (25 cases) were closely ?elated to major flares of the twostrand expanding type which produced strong SSWF effects (100 per cent), Type IV bursts (95 per cent), and PCA effects (85 per cent). Depending on their position the LPS's appeared on the disk in various shapes and with different delay times after flare onset; they were visible either in emission or in absorption. The observations strongiy suggest that the LPS's are part of a powerful flare event and are due to a propagation of the flare process into the solar corona. A model of the evolution bf the combined flare-loop system is derived from the observations. Title: Optical Characteristics of Cosmic Ray and Proton Flares Authors: Bruzek, Anton Bibcode: 1964JGR....69.2386B Altcode: In recent years several attempts have been made to find characteristic properties of the optical manifestations of flare events that produce the energetic protons which generate cosmic-ray increases at ground level (GLE) and polar-cap absorption effects (PCA). In a study1 of 9 flares which were followed by a PCA effect Dodson and Hedeman [1962] recognized that in each of these cases part of the Ha flare covered the umbra of a large spot. Ellison et al. [1961] noticed that all cosmic-ray flares which had been well observed on the solar disk (7 cases) consisted of two roughly parallel bright strands which covered partly or completely the largest umbras of the associated spot group. Avignon et al. [1963] found a similar arrangement of the flare filaments in 13 out 15 PCA flares. Title: Case Histories of Flares: The Large Flares of July 11, 12, 18, and 20, 1961 Authors: Bruzek, A. Bibcode: 1964NASSP..50..301B Altcode: 1964psf..conf..301B No abstract at ADS Title: The Influence of Flares on the Associated Permanent Coronal Condensation Authors: Bruzek, A. Bibcode: 1963IAUS...16..137B Altcode: No abstract at ADS Title: Über Fleckenprotuberanzen vor der Sonnenscheibe. Mit 4 Textabbildungen Authors: Bruzek, A. Bibcode: 1962ZA.....54..225B Altcode: No abstract at ADS Title: Über die Umlaufgeschwindigkeit der polaren Filamente. Mit 2 Textabbildungen Authors: Bruzek, A. Bibcode: 1961ZA.....51...75B Altcode: No abstract at ADS Title: Beobachtungen über die Beziehungen zwischen Eruptionen und Fleckenfeldern. Mit 4 Textabbildungen Authors: Bruzek, A. Bibcode: 1960ZA.....50..110B Altcode: No abstract at ADS Title: Über die Spiculen auf der Sonnenscheibe. Mit 2 Textabbildungen Authors: Bruzek, A. Bibcode: 1959ZA.....47..191B Altcode: No abstract at ADS Title: Die Filamente und Eruptionen eines Aktivitätszentrums. Mit 6 Textabbildungen Authors: Bruzek, A. Bibcode: 1958ZA.....44..183B Altcode: No abstract at ADS Title: Über eruptionsartige Fackeln bei Filamentaufstiegen. Mit 5 Textabbildungen Authors: Bruzek, A.; Becker, U. Bibcode: 1957ZA.....42...76B Altcode: No abstract at ADS Title: Die Korona-Emissionsgebiete und ihre Beziehungen zu Sonnenflecken und Fackeln. Mit 15 Textabbildungen. Authors: Bruzek, A. Bibcode: 1955ZA.....35..213B Altcode: No abstract at ADS Title: Die Mitte-Rand-Variation der Hα--Linienbreite, der Hα- Zentralintensität und der Flächen der Eruptionen. Mit 4 Textabbildungen Authors: Bruzek, A. Bibcode: 1955ZA.....38....1B Altcode: No abstract at ADS Title: Beziehungen zwischen Protuberanzen und monochromatischer Korona. Mit 5 Textabbildungen Authors: Bruzek, A. Bibcode: 1955ZA.....35..265B Altcode: No abstract at ADS Title: Die hypothetische Neigung der Sonnenfleckenachsen. Mit 4 Textabbildungen Authors: Bruzek, A. Bibcode: 1953ZA.....33..267B Altcode: No abstract at ADS Title: On a type of flare associated with ascendant dark filaments Authors: Bruzek, A. Bibcode: 1952Obs....72..154B Altcode: No abstract at ADS Title: Über die Ursache der ''Plötzlichen" Filamentauflösungen. Mit 4 Textabbildungen Authors: Bruzek, A. Bibcode: 1952ZA.....31...99B Altcode: No abstract at ADS Title: Die Ausbreitung von "Euptionsstörungen". Mit 2 Textabbildungen Authors: Bruzek, A. Bibcode: 1952ZA.....31..111B Altcode: No abstract at ADS Title: Beobachtungen über das Verhalten von Filamenten während chromosphärischer Eruptionen. Mit 7 Textabbildungen Authors: Bruzek, A. Bibcode: 1951ZA.....28..277B Altcode: No abstract at ADS