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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Recently Added

  • Three-phase evolution of aspect ratio in fast and slow CMEs from the Sun to 1 au 
    Mishra, Wageesh; Agarwal, Anjali; Srivastava, N (Oxford University Press on behalf of Royal Astronomical Society, 2026-07)
    Coronal mass ejections (CMEs) undergo significant geometric evolution as they propagate from the Sun to 1 au, influencing their radial size, expansion, and space weather impact. We investigate the evolution of CME aspect ...
  • Designing a sky-scanning Fabry–Perot interferometer system with a large size integrating sphere 
    Mahavarkar, Prasanna; Sriram, S; Joshi, Bhagyashree; Hasan, Amirul; Remya, B. S; Chandra, Sarvesh (Elsevier B.V., 2023-12)
    Integrating spheres can be manufactured at sizes ranging from 1 mm to 3 m in diameter. It has been agreed widely by manufacturers that fitting a large-sized integrating sphere as per the customer requirement is a complex ...
  • Chemodynamic studies of the galaxy 
    Deepak (Indian Institute of Astrophysics, 2022-04)
    Based on data from large spectroscopic surveys like the GALactic Archaeology with HERMES (GALAH) and the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST), along with astrometric and photometric data from ...
  • Three extremely metal-poor stars: Discovery of a new CEMP-no star 
    Goswami, P. P; Goswami, A (Oxford University Press on behalf of Royal Astronomical Society, 2026-07)
    We have conducted detailed high-resolution spectroscopic studies on three extremely metal-poor (EMP) stars HE 0401−0138, HE 1153−0518, and HE 1246−1344. For the stars HE 0401−0138 and HE 1246−1344, we have estimated the ...
  • Probing spectral variability in NGC 4490 ULX-8 over 24 yr of XMM–Newton, Chandra, and Swift-XRT observations 
    Vashisht, Tarang; Beri, Aru; Ghosh, Tanuman; Upadhyay, Aman; Rana, Vikram (Oxford University Press on behalf of the Royal Astronomical Society, 2026-07)
    We present a spectral variability study of the ultraluminous X-ray source NGC 4490 ULX-8 based on 14 Chandra, 6 XMM– Newton, and 19 Swift-XRT observations obtained between 2000 and 2024. The X-ray spectra are modelled using ...

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