Author name code: bhavilai ADS astronomy entries on 2022-09-14 author:"Bhavilai, R." ------------------------------------------------------------------------ Title: Comment on Education in Astronomy Authors: Bhavilai, R. Bibcode: 1984aprm.conf..246B Altcode: No abstract at ADS Title: The Chiang Kahn Meteorite Authors: Bhavilai, Rawi Bibcode: 1983Metic..18Q.266B Altcode: No abstract at ADS Title: Fine structure of the solar chromosphere Authors: Bhavilai, R. Bibcode: 1975STIN...7525808B Altcode: The sun was observed in the H-alpha line and around it in the quiet regions and in the active regions. Preliminary results were obtained concerning the life-times and changes of the fine structures in the quiet regions and the active regions, the bright streaks and the identification of the H-alpha plages and the photospheris faculae. Title: Chromospheric Fine Structures Near the Solar Limb in HX Authors: Bhavilai, R. Bibcode: 1974IAUS...56...25B Altcode: No abstract at ADS Title: Comments on the Discovery of the Dark Band in the Hα Solar Chromosphere Authors: White, O. R.; Bhavilai, R. Bibcode: 1970ApL.....5..137W Altcode: No abstract at ADS Title: Observational Problems and Results Concerning Hα Disk Structures and Limb Structures Authors: Bhavilai, R. Bibcode: 1969cctr.conf..299B Altcode: No abstract at ADS Title: The Bright Streaks in the H&alpha Disk Chromosphere Authors: Bhavilai, Rawi Bibcode: 1968SoPh....5..471B Altcode: Evidence is presented demonstrating the existence of a type of chromospheric structure in the form of bright streaks. These are extensions across the solar disk of elongated bright mottles which originate in the central regions of clusters of mottles. They are best observed on good filtergrams at Hα ± 0.5 Å through comparison with filtergrams at other positions on the line profile. Their length can be as much as 200 sec of arc. The bright streaks appear to be predominantly horizontal loop structures, while the well-known spicules are mainly vertical structures. A bright streak may be well defined or rather diffuse along its length, and many of them are accompanied by darker boundaries or envelopes. It is usual to find a loop of bright streak bridging the central areas of two mottle clusters. It seems that the observed pattern in the space between the chromospheric network at Hα ± 0.5 Å results partly from the interactions of the bright streaks of different stages of evolution traversing the area in different directions. Title: The structure of the solar chromosphere, I: Identification of spicules on the disk Authors: Bhavilai, Rawi Bibcode: 1965MNRAS.130..411B Altcode: Spicules have been studied in the H line with (a) a i/8 A tunable filter, and (b) a 3/4 A filter equipped with a beam splitter yielding simultaneous photographs in opposite wings. Spicules have been traced from outside the solar limb on to the chromospheric disk just inside the limb, where they appear as bright emission featares. On the disk, they appear as mottles which are bright at all positions across the line profile. The well-known dark mottles, although merging to form the general chromosphere at the limb, do not extend beyond as spicules. However, there is a close association between the dark and bright mottles, the latter being found in the central parts of the well-known chains of the chromospheric network or of clusters of dark mottles. A three-dimensional model of some of these structures is described. Title: The "double Limb" in Ha. Authors: Bhavilai, Rawi; Norton, D. G.; Giovanelli, R. G. Bibcode: 1965ApJ...141..274B Altcode: Photographs of the solar chromosphere in monochromatic light of pass band 1s A centered on Ha show that the well-known "double limb" vanishes on eliminating all traces of the surrounding continuum. The inner limb is spurious and is simply an image of the photosphere in stray light of unwanted wavelengths.