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July 1974 solar events: a possible lower limit for microwave activity

Abstract

The active region McMath 10433 was the source of several flares and radio outbursts during the early part of July 1974. This region was tracked continuously, for several periods during the month at 22.2 GHz using a telescope with a 4 minutes of arc beam. Comparison with the results obtained simultaneously with a normal 7 GHz solar instrument indicate that there is important burst activity occurring at levels below the detection limit of normal solar patrol instruments. The time-development morphology of these bursts is similar to those normally observed and has enabled the simple events to be re-interpreted. A completely new type of event-the fast absorption-has also been recognized. The correlation of the microwave events with SPA events observed on VLF propagation is also discussed.
Authors:
Kaufmann, P; Iacomo, P Jr; Koppe, E H; Marques dos Santos, P; Schaal, R E; [1]  Blakey, J R [2] 
  1. Universidade Mackenzie, Sao Paulo (Brazil). Centro de Radio-Astronomia e Astrofisica
  2. Surrey Univ., Guildford (UK). Dept. of Physics
Publication Date:
Nov 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-238709; EDB-77-014997
Resource Relation:
Journal Name: Sol. Phys.; (Netherlands); Journal Volume: 45:1
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SOLAR FLARES; MICROWAVE RADIATION; SOLAR RADIO BURSTS; GHZ RANGE 01-100; SUN; ELECTROMAGNETIC RADIATION; FREQUENCY RANGE; GHZ RANGE; RADIATIONS; RADIOWAVE RADIATION; SOLAR ACTIVITY; STARS; 640104* - Astrophysics & Cosmology- Solar Phenomena
OSTI ID:
7344767
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: SLPHA
Submitting Site:
INIS
Size:
Pages: 189-197
Announcement Date:
Aug 01, 1976

Citation Formats

Kaufmann, P, Iacomo, P Jr, Koppe, E H, Marques dos Santos, P, Schaal, R E, and Blakey, J R. July 1974 solar events: a possible lower limit for microwave activity. Netherlands: N. p., 1975. Web.
Kaufmann, P, Iacomo, P Jr, Koppe, E H, Marques dos Santos, P, Schaal, R E, & Blakey, J R. July 1974 solar events: a possible lower limit for microwave activity. Netherlands.
Kaufmann, P, Iacomo, P Jr, Koppe, E H, Marques dos Santos, P, Schaal, R E, and Blakey, J R. 1975. "July 1974 solar events: a possible lower limit for microwave activity." Netherlands.
@misc{etde_7344767,
title = {July 1974 solar events: a possible lower limit for microwave activity}
author = {Kaufmann, P, Iacomo, P Jr, Koppe, E H, Marques dos Santos, P, Schaal, R E, and Blakey, J R}
abstractNote = {The active region McMath 10433 was the source of several flares and radio outbursts during the early part of July 1974. This region was tracked continuously, for several periods during the month at 22.2 GHz using a telescope with a 4 minutes of arc beam. Comparison with the results obtained simultaneously with a normal 7 GHz solar instrument indicate that there is important burst activity occurring at levels below the detection limit of normal solar patrol instruments. The time-development morphology of these bursts is similar to those normally observed and has enabled the simple events to be re-interpreted. A completely new type of event-the fast absorption-has also been recognized. The correlation of the microwave events with SPA events observed on VLF propagation is also discussed.}
journal = []
volume = {45:1}
journal type = {AC}
place = {Netherlands}
year = {1975}
month = {Nov}
}