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

  • Detection of quasi-periodic oscillations in the 37 GHz radio light curve of the blazar Ton 599 during 1990─2020 
    Gupta, A. C; Volvach, A. E; Kishore, Shubham; Volvach, L. N; Wiita, P. J; Cui, Lang; Valtonen, Mauri J; Mondal, Sandeep K; Gaur, H (EDP Sciences, 2026-03)
    Context. Blazars are a subclass of radio-loud active galactic nuclei (AGN) that display strong multi-wavelength variability on diverse timescales ranging from years down to minutes. In the last 1.5 decades, there have been ...
  • Probing generalized emergent dark energy with DESI DR2 
    Sharma, Vipin Kumar; Chaudhary, Himanshu; Kolekar, Sanved (Elsevier B.V., 2026-03)
    As an update on the initial findings of DESI, the new results provide the first hint of potential deviations from a cosmological constant (𝜔 = −1), which, if confirmed with significance > (2 − 4)𝜎, would challenge the ...
  • Variability study and searching for quasiperiodic oscillations with day-like periods in the blazar S5 0716+714 with TESS 
    Kishore, Shubham; Gupta, A. C; Wiita, P. J (American Astronomical Society, 2026-02-20)
    Using an unprecedented cadence of 30 minutes provided by the Transiting Exoplanet Survey Satellite, we have examined the optical light curves (LCs) of the blazar S5 0716+714 obtained from its Sectors 40, 47, and 53 over ...
  • Fluctuation dynamos in supersonic turbulence at Pm ≳ 1 
    Nagdeo, Ameya Uday; Sur, Sharanya; Vaidya, Bhargav (American Astronomical Society, 2026-02-20)
    Fluctuation dynamos provide a robust mechanism for amplifying weak seed magnetic fields in turbulent astrophysical plasmas. However, their behaviour in the highly compressible regimes characteristic of the interstellar ...
  • Unveiling the dual nature of V1180 cas: UXor-like dips and EXor-like bursts across a decade 
    Chand, Tarak; Sharma, Saurabh; Singh, Koshvendra; Ninan, J. P; Ghosh, Arpan; Ojha, D. K; Baug, Tapas; Sahu, D. K; Bhatt, B. C; Pramod Kumar, S; Yadav, R. K; Panwar, Neelam; Verma, Aayushi; Kaur, Harmeen; Mamta; Chakraborty, Manojit; Gokhe, Kartik; Singh, Ajay Kumar (American Astronomical Society, 2026-02-20)
    We present a detailed analysis of the long-term photometric and spectroscopic evolution of V1180 Cas over a decade, aiming to identify the dominant mechanisms behind its variability. We combine multiband light curves from ...

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