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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package 
    The Astropy Collaboration; Price-Whelan, Adrian M; Lim, Pey Lian; Earl, Nicholas; Starkman, Nathaniel; Bradley, Larry; Shupe, David L; Patil, Aarya A; Corrales, Lia; Brasseur, C. E; Nothe, Maximilian; Singer, Leo P; Singhal, Jaladh; Sinha, Manodeep; Sipocz, Brigitta M; Spitler, Lee R; Stansby, David; Streicher, Ole; Sumak, Jani; Tollerud, Erik; Swinbank, John D; Paper Authors; Taranu, Dan S; Tewary, Nikita; Tremblay, Grant R; Val-Borro, Miguel de; Kooten, Samuel J. Van; Vasovic, Zlatan; Verm, Shresth; Cardoso, Jose Vinícius de Miranda; Williams, Peter K. G; Morris, Brett M; Aldcroft, Thomas L; Wilson, Tom J; Winkel, Benjamin; Wood-Vasey, W. M; Xue, Rui; Yoachim, Peter; Zhang, Chen; Zonca, Andrea; Astropy Project Contributors; Ginsburg, Adam; Vaher, Eero; Alvarado-Montes, Jaime A; Weaver, Benjamin A; Tocknell, James; Jamieson, William; Kerkwijk, Marten H. van; Robitaille, Thomas P.; Merry, Bruce; Bachetti, Matteo; Gunthe, H. Moritz; Archibald, Anne M; Bodi, Attila; Bapat, Shreyas; Barentsen, Geert; Bazan, Juanjo; Biswas, Manish; Boquien, Mederic; Handberg, Rasmus; Burke, D. J; Cara, Daria; Cara, Mihai; Conroy, Kyle E; Conseil, Simon; Craig, Matthew W; Cross, Robert M; Cruz, Kelle L; D'Eugenio, Francesco; Dencheva, Nadia; Hart, Akeem; Devillepoix, Hadrien A. R; Dietrich, Jorg P; Eigenbrot, Arthur Davis; Erben, Thomas; Ferreira, Leonardo; Foreman-Macke, Daniel; Fox, Ryan; Freij, Nabil; Garg, Suyog; Geda, Robel; Hatfield-Dodds, Zac; Glattly, Lauren; Gondhalekar, Yash; Gordon, Karl D; Grant, David; Greenfield, Perry; Groener, Austen M; Guest, Steve; Gurovich, Sebastian; Homeier, Derek; Hosseinzadeh, Griffin; Jenness, Tim; Jones, Craig K; Joseph, P; Kalmba, J. Bryce; Karamehmetoglu, Emir; Salgado, Jesus; Kałuszynski, Mikołaj; Kelley, Michael S. P; Kern, Nicholas; Kerzendor, Wolfgang E; Koch, Eric W; Kulumani, Shankar; Lee, Antony; Ly, Chun; M, Zhiyuan; MacBride, Conor; Sanghi, Aniket; Maljaars, Jakob M; Muna, Demitri; Murphy, N. A; Norman, Henrik; O'Steen, Richard; Oman, Kyle A; Pacifici, Camilla; Pascual, Sergio; Pascual-Granado, J; Patil, Rohit R; Saunders, Nicholas; Perren, Gabriel I; Pickering, Timothy E; Rastogi, Tanuj; Roulston, Benjamin R; Ryan, Daniel F; Rykoff, Eli S; Sabater, Jose; Sakurikar, Parikshit; Savchenko, Volodymyr; Schwardt, Ludwig; Seifert-Eckert, Michael; Shih, Albert Y; Jain, Anany Shrey; Shukla, Gyanendra; Sick, Jonathan; Donath, Axel; Simpson, Chris; Singanamalla, Sudheesh (American Astronomical Society, 2022-08-20)
    The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed functionality to the astronomical community. A key element of the Astropy Project ...
  • ASTROSAT mission 
    Singh, Kulinder Pal; Tandon, S. N; Agrawal, P. C; Antia, H. M; Manchanda, R. K; Yadav, J. S; Seetha, S; Ramadevi, M. C; Rao, A. R; Bhattacharya, D; Paul, B; Sreekumar, P; Bhattacharyya, S; Stewart, G. C; Hutchings, J; Subramaniam, A; Ghosh, S. K; Murthy, J; Pati, A. K; Kameswara Rao, N; Stalin, C. S; Girish, V; Sankarasubramanian, K; Vadawale, S; Bhalerao, V. B; Dewangan, G. C; Dedhia, D. K; Hingar, M. K; Katoch, T. B; Kothare, A. T; Mirza, I; Mukerjee, K; Shah, H; Shah, P; Mohan, Rekhesh; Sangal, A. K; Nagabhusana, S; Sriram, S; Malkar, J. P; Sreekumar, S; Abbey, A. F; Hansford, G. M; Beardmore, A. P; Sharma, M. R; Murthy, S; Kulkarni, R; Meena, G; Babu, V. C; Postma, J (SPIE--The International Society for Optical Engineering, 2014-07)
    ASTROSAT is India’s first astronomy satellite that will carry an array of instruments capable of simultaneous observations in a broad range of wavelengths: from the visible, near ultraviolet (NUV), far-UV (FUV), soft X-rays ...
  • AstroSat observation of non-resonant type-C QPOs in MAXI J1535-571 
    Chatterjee, Debjit; Debnath, D; Jana, A; Shang, J.-R.; Chakrabarti, S.K.; Chang, H.-K; Banerjee, A; Bhattacharjee, A; Chatterjee, K; Bhowmick, R; Nath, S.K (Springer, 2021-08)
    Galactic transient black hole candidate (BHC) MAXI J1535-571 was discovered on 2017 September 02 simultaneously by MAXI/GSC and Swift/BAT instruments. It has also been observed by India’s first multi-wavelength astronomy-mission ...
  • AstroSat soft X-ray observations of the symbiotic recurrent nova V3890 Sgr during its 2019 outburst 
    Singh, K. P; Girish, V; Pavana, M; Ness, J.-U; Anupama, G. C; Orio, M (Oxford University Press on behalf of the Royal Astronomical Society, 2021-02)
    Two long AstroSat Soft X-ray Telescope observations were taken of the third recorded outburst of the symbiotic recurrent nova V3890 Sgr. The first observing run, 8.1–9.9 d after the outburst, initially showed a stable ...
  • AstroSat Study of the Globular Cluster NGC 2298: Probable Evolutionary Scenarios of Hot Horizontal Branch Stars 
    Rani, Sharmila; Pandey, G; Subramaniam, A; Chung, Chul; Sahu, S; Kameswara Rao, N (IOP Publishing, 2021-12-20)
    We present the far-UV (FUV) photometry of images acquired with UVIT on AstroSat to probe the horizontal branch (HB) population of the Galactic globular cluster NGC 2298. UV-optical color–magnitude diagrams (CMDs) are ...
  • AstroSat view of GRS 1915+105 during the soft state: detection of HFQPOs and estimation of mass and spin 
    Sreehari, H; Nandi, Anuj; Das, Santabrata; Agrawal, V. K; Mandal, Samir; Ramadevi, M. C; Katoch, Tilak (Oxford University Press on behalf of the Royal Astronomical Society, 2020-12)
    We report the results of AstroSat observations of GRS 1915+105 obtained using 100 ks Guaranteed Time during the soft state. The colour–colour diagram indicates a variability class of δ with the detection of high-frequency ...
  • Asymmetric lepton production in a universe with non-zero baryon number 
    Sivaram, C (Springer, 1982-03)
    Due to processes occurring during different stages of stellar evolution, a universe with a net baryon number develops an excess of neutrinos and positrons over antineutrinos of the same order as the observed relative ...
  • Asymmetry in the length scales of the solar supergranulation network 
    Raju, K. P (IOP Publishing, 2020-08-20)
    Supergranulation is the horizontal velocity pattern on the solar surface with a typical size of 30,000 km and a lifetime of 24 hr. The network structure seen in chromospheric lines, such as Ca ii K 3934 Å, is the manifestation ...
  • Asymmetry parameter and efficiency for radiation pressure and scattering of electromagnetic radiation by a very large dielectric sphere 
    Shah, G. A (Kluwer Academic Publisher, 1991)
    The asymmetry parameter of the scattering diagram and the efficiency for radiation pressure for scattering by a very large dielectric sphere conforming to geometrical optics and diffraction, have been investigated beyond ...
  • Asymptotic Values of Some Scattering Parameters from Mie Theory 
    Shah, G. A (Indian Institute of Astrophysics, Bangalore, 1991)
    The scattering parameters such as extinction efficiency, albedo, asymmetry parameter, etc, have been studied on the basis of the Mie theory of scattering of electromagnetic radiation by a sphere as well as the classical ...
  • At what energy does gravity unite with grand unified theories in the early universe? 
    Sivaram, C (Springer, 1987-12)
    Unification of gravity with GUTs is usually expected at the Planck energy E pl≈10/sup19 GeV. However, the vastly different values of the two couplings at E Pl ( α GUT« 1, α grav≈ 1) would make such unity (at E Pl) implausible ...
  • AT2020ohl: its nature and probable implications 
    Roy, Rupak; Mandal, Samir; Sahu, D. K; Anupama, G. C; Nandi, Sumana; Kumar, Brijesh (Oxford University Press on behalf of Royal Astronomical Society., 2024-03)
    ASASSN-20hx, a.k.a AT2020ohl, is an ambiguous nuclear transient, which was discovered in the nearby galaxy NGC6297 by the All-Sky Automated Survey for Supernovae. We have investigated the evolution of AT2020ohl using a ...
  • Atlas of H-Alpha Synoptic Charts for Solar Cycle 19 (1955 - 1964): Carrington Solar Rotations 1355 to 1486 
    Makarov, V. I; Sivaraman, K. R (Indian Institute of Astrophysics, Bangalore, 1986)
  • An atmosphere on Ganymede from its occultation of SAO 186800 on 7 June 1972 
    Carlson, R. W; Bhattacharyya, J. C; Smith, B. A; Johnson, T. V; Hidayat, B; Smith, S. A; Taylor, G. E; O'Leary, B; Brinkmann, R. T (The American Association for the Advancement of Science, 1973-09)
    On 7 June 1972 the third Jovian satellite Ganymede occulted the eighth-magnitude star SAO 186800. Successful photoelectric observations obtained at Lembang, Java (Indonesia), and Kavalur, India, show nonabrupt immersions ...
  • Atmospheric abundances in post-AGB candidates of intermediate temperature 
    Arellano Ferro, A; Giridhar, S; Mathias, P (EDP Sciences, 2001-03)
    Detailed atmospheric abundances have been calculated for a sample of -G supergiant stars with IR fluxes and/or high galactic latitudes. HD 172481 and HD 158616 show clear indications of being post-AGB stars that have ...
  • Atmospheric Characteristics at Trombay relating to the October 1995 Solar Eclipse 
    Sapra, B. K; Sunny, Faby; Kulkarni, P. B; Mahadevan, T. N; Pandit, G. G (Indian Institute of Astrophysics, Bangalore, 1997)
    A study was undertaken to examine the effect of a short-term reduction in the solar intensity on the characteristics of the atmospheric environment. Meteorological parameters, solar radiation variations, major pollutant ...
  • Atmospheric dispersion corrector for a multi-object spectroscopic mode of HROS-TMT 
    Manjunath, B; Hasan, Amirul; Divakar, Devika; Surya, Arun; Sriram, S; Sivarani, T; Prakash, A; Parvathy, M; Yadav, Sudharsan (SPIE-The International Society for Optical Engineering, 2023-10)
    Highly multiplexed spectroscopic surveys have changed the astronomy landscape in recent years. However, these surveys are limited to low and medium spectral resolution. High spectral resolution spectroscopy is often photon ...
  • Atmospheric Extinction at Kavalur Observatory during 1980-85 
    Shylaja, B. S; Bhattacharyya, J. C (Indian Institute of Astrophysics, Bangalore, 1986)
    From a series of photoelectric scanner observations during 1980-85, the atmospheric extinction at Kavalur has been analysed. The variation of this appears to follow lamda/sup-4/ law. There is a general increase in the ...
  • Atmospheric heat redistribution effect on emission spectra of Hot-Jupiters 
    Sengupta, Soumya; Sengupta, S (Elsevier B.V, 2023-05)
    Hot Jupiters are the most studied and easily detectable exoplanets for transit observations. However, the correlation between the atmospheric flow and the emission spectra of such planets is still not understood. Due to ...
  • Atmospheric mass-loss of extrasolar planets orbiting magnetically active host stars 
    Lalitha, S; Schmitt, J. H. M. M; Dash, S (Oxford University Press on behalf of the Royal Astronomical Society, 2018-06)
    Magnetic stellar activity of exoplanet hosts can lead to the production of large amounts of high-energy emission, which irradiates extrasolar planets, located in the immediate vicinity of such stars. This radiation is ...

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