Welcome to the Digital Repository of Indian Institute of Astrophysics

This digital repository of Indian Institute of Astrophysics (IIAP), Bangalore, India is developed to capture, organize disseminate and preserve the research publications of IIAP. It also includes the in-house technical reports and annual reports in addition to various other grey literatures created within the institute.You can search, browse and access full text of these publications from the repository.

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  • Variations of the Ca II K line profile parameters with solar latitude and time observed from Kodaikanal Solar Observatory 
    Srinivasa, Apoorva; Sreedevi, Anu; Raju, K. P; Nagaraju, K; Singh, J; Karuppath, N; Devendran, P; Ramesh Kumar, T; Kumaravel, P (Oxford University Press on behalf of Royal Astronomical Society, 2025-08)
    The Ca-K line profiles as functions of solar latitude and time were obtained through our observations from the Kodaikanal Solar Observatory using the solar tunnel telescope and spectrograph with a CCD detector. Observations ...
  • The variable stars in the compact halo globular cluster NGC 5634 visited again 
    Ferro, A. A; Michel, R; Yepez, M. A; Muneer, S; Bustos Fierro, I. H; Prudil, Z (Oxford University Press on behalf of Royal Astronomical Society, 2025-08)
    We present new time-series CCD VR photometry of the globular cluster NGC 5634. We aim to use the known RR Lyrae stars, members of the cluster, as indicators of mean metallicity and distance. Accurate coordinates, periods, ...
  • Dynamics of reconnection nanojets in eruptive and confined solar flares 
    Bura, Annu; Shrivastav, Arpit Kumar; Patel, Ritesh; Samanta, T; Nayak, Sushree S; Ghosh, Ananya; Sow Mondal, Shanwlee; Pant, V; Seaton, D. B (American Astronomical Society, 2025-08-01)
    Recent observations reveal small-scale reconnection-driven plasma ejections, often termed nanojets, triggered by magnetic field interactions at slight misalignment angles. These fast, collimated plasma ejections are ∼1.5 ...
  • Exoplanet classification through vision transformers with temporal image analysis 
    Choudhary, Anupma; Sohith, Bandari; Kushvah, B. S; Swastik, C (American Astronomical Society, 2025-08)
    The classification of exoplanets has been a longstanding challenge in astronomy, requiring significant computational and observational resources. Traditional methods demand substantial effort, time, and cost, highlighting ...
  • Insights into chromospheric large-scale flows using Nobeyama 17 GHz radio observations: I. The differential rotation profile 
    Routh, Srinjana; Kumari, Anshu; Pant, V; Kandekar, Jaydeep; Banerjee, D; Khan, M. Saleem; Mishra, Dibya Kirti (EDP Sciences, 2025-08)
    Context. Although the differential rotation rate on the solar surface has long been studied using optical and extreme ultraviolet (EUV) observations, associating these measurements with specific atmospheric heights remains ...

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