About ARIES >> Achievements
- The first photoelectric observations of stars from Indian soil were obtained at the institute.
- In the country, first successful photoelectric observations of occultation of a star by a minor planet were taken at the institute.
- The institute contributed to the detection of rings around Uranus by observing the occultation of a star by Uranus.
- Two additional rings around Saturn were detected, out of these one ring was detected for the first time.
- The ring around Neptune were discovered independently.
- Based on observed data on galactic clusters, it has been found that the plane defined by the interstellar dust is tilted with respect to the formal galactic plane.
- A large number of eclipsing binaries, variable stars and galactic clusters has been observed and many new results have been published. The cluster study indicates that slope of the initial mass function above one solar mass is universal and similar to Salpeter's value.
- Predictions of many new molecular species in the Sun's photosphere, sunspots and faculae have been published. Out of these, the presence of SH, C2 ( the Phillips and the Ballik-Ramsey systems ) and SiO have been confirmed observationally.
- Using the Sun as a laboratory source, oscillator strengths have reliably been determined for the MgH (Green System), C2 (Phillips System) and CN (Red System) bands. Additionally, gf values of about 300 lines of 17 different atomic species have been derived.
- Successful observations of the chromosphere and corona were carried out during Total Solar Eclipses in 1980 and 1995.
- Through studies of the accuracy of time dissemination by NPL, New Delhi, a significant contribution has been made towards the improvement of time dissemination accuracy.
- As a result of optical tracking of artificial earth satellites, the location of Manora Peak has been determined with a precision of 10 meters in the frame of reference of Standard earth. This information is valuable for a geological survey.
- A large number of comets including Comet Halley have also been observed.
- Optical observations of the 30 afterglows of Gamma ray Bursts have been taken including the first one observed from the country. Their study supports non-isotropic emission from them and a collapsar model as the progenitor.
- It was shown for the first time that intra-night optical variability with amplitude >3% is associated exclusively with (blazer) jet streams high optical polarization. This establishes a direct link between relativistic beaming and optical micro-variability. The AGN classes showing low optical polarization(< 3%) exhibit very low level optical intra night variability.
- The milli-magnitude variability in few chemically peculiar stars have been discovered. Detection of such small amplitude photometric variability indicate the excellent photometric sky conditions at Manora Peak, Nainital.