摘要:

The phenomenological features of type V radiation are discussed at the basis of fine structure records taken at the Astrophysical Observatory Potsdam since 1958. A phenomenological subclassification is derived from the various forms of appearance. It is believed that significant qualities are only the longer duration than that of normal type III bursts and the fact that nearly always a type III burst is preceding. It seems that there are no urgent reasons to consider type V emission as continuum radiation. It is assumed that no different excitation mechanism is effective for type III and type V. The observational facts are tentatively explainable by special assumptions about the structure of the exciting electron stream. Additionally it is taken into consideration that the prolonged duration of type V is due to a merging process. It is suggested that merging occurs if the same coronal area is reexcited by a second electron stream, whereas superposition occurs if different areas are excited by both the streams. The possibility is considered that harmonics partly contribute to the observed features.

ISSN:0004-6337    

DOI:10.1002/asna.19662890302

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractThe primary origin of type III bursts has been supposed to be within or a little above those levels of the solar atmosphere, where the bursts of the lower decimeter range originate. The occurrence of type V bursts is not characteristic for the frequency of disappearance of type III bursts as a consideration of the “ending” frequencies of type III bursts shows.Decameter type III and type III/V bursts observed during more than five years are investigated statistically concerning their association with microwave bursts and chromospheric flares. The effects of starting times, morphology, and spectrum of associated microwave bursts are discussed as well as the importances and positions of the correlated flares. Distributions of starting frequencies of some classes of type III bursts have been taken into acco

ISSN:0004-6337    

DOI:10.1002/asna.19662890303

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractEs wird auf empirische Prüfungsmöglichkeiten hingewiesen, die zu entscheiden gestatten, ob Quasistellare Quellen überhelle Objekte oder durch Gravitationslinsen hervorgerufene Bilder si

ISSN:0004-6337    

DOI:10.1002/asna.19662890304

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractDer Aufbau und die Eigenschaften eines Photoelektronen zählenden UBV‐Sternphotometers mit zwei Kanälen für Zählgeschwindigkeiten bis zu 3 105Photoelektronen pro Sekunde werden beschrieben. Sekundärelektronenvervielfacher verschiedener Bauart werden auf ihre Eignung zur Verwendung in zählenden Photometern untersucht. Die Vor‐und Nachteile zählender Photometer werden auf Grund der Erfahrungen diskutiert, die beim Betrieb des Zweikanalphotometers an einem 40‐cm‐Spiegelteleskop 1961‐62 auf Rockdale Mountain (Südafrika

ISSN:0004-6337    

DOI:10.1002/asna.19662890305

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

The discovery of this list's 351 new variables was announced in Mitteilungen über Veränderliche Sterne. Here some more details are given, including epochs for short period and eclipsing variables and charts of the surrounding

ISSN:0004-6337    

DOI:10.1002/asna.19662890306

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

ISSN:0004-6337    

DOI:10.1002/asna.19662890307

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

ISSN:0004-6337    

DOI:10.1002/asna.19662890301

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY