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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • GRB 051028: an intrinsically faint gamma-ray burst at high redshift? 
    Castro-Tirado, A. J; Jelínek, M; Pandey, S. B; McBreen, S; de Jong, J; Sahu, D. K; Ferrero, P; Caballero, J. A; Gorosabel, J; Kann, D. A; Klose, S; de Ugarte Postigo, A; Anupama, G. C; Gry, C; Guziy, S; Srividya, S; Valdivielso, L; Vanniarajan, S; Henden, A. A (EDP Sciences, 2006-12)
    We present multiwavelength observations of the gamma-ray burst GRB 051028 detected by HETE-2 in order to derive its afterglow emission parameters and to determine the reason for its optical faintness when compared to other ...
  • The Great North American Eclipse 2024 
    Kapoor, R. C. (NIScPR-CSIR, 2024-05)
    THE excitement about the total solar eclipse of 8 April 2024 in North America is unprecedented. Years before it was to pass, astronomers, educationists, students, the administrations and the local communities, and ...
  • Green coronal emission and the global solar cycle 
    Sivaraman, K. R; Makarov, V. I (Astronomical Society of the Pacific, 1992)
  • Green coronal intensity enhancements and their relation to the underlying photospheric/chromospheric activity 
    Ramesh, K. B; Nagabhushana, B. S; Varghese, B. A (Kluwer Academic Publishers, 1999-08)
    Analysis of the photospheric and chromospheric activity at the sites of enhanced 5303 Å coronal intensity revealed some important aspects of their association. We have examined the daily maps of 5303 Å coronal line intensity ...
  • Green's matrix for Compton reflection of polarized radiation from cold matter 
    Poutanen, J; Nagendra, K. N; Svensson, R (Royal Astronomical Society, 1996-12)
    The Compton-reflected spectrum from cold matter for incident X-rays and gamma-rays with arbitrary angular, spectral and polarization properties can be determined by a simple folding of Green's matrix with the incident ...
  • Grid size optimization for atmospheric turbulence phase screen simulations 
    Roopashree, M. B; Vyas, A; Prasad, B. R (Optical Society of America, 2011-07)
    Atmospheric phase screens are used for numerical evaluation of large telescope systems. In this paper, we optimized the grid size of the simulated phase screens in terms of the error in the structure function assuming a ...
  • A ground based near infra-red detector system 
    Bhattacharya, J. C (Centre of Advanced Study in Astronomy,Osmania University, 1974)
    The problems connected with observations in the near infra-red from ground based locations are discussed. It is shown that optical telescopes located at high stations in India. can be used effectively for near infra-red ...
  • Ground-based optical astronomy in India 
    Parthasarathy, M (National Astronomical Observatory, 1996)
  • Ground-Level Humidity, Pressure and Temperature Measurements during the October 24, 1995 Total Solar Eclipse 
    Gonzalez, G (Indian Institute of Astrophysics, Bangalore, 1997)
    Measurements of the relative humidity, air pressure, and air temperature were obtained at Nim Ka Thana, India on October 24, 1995 during tht total eclipse of the Sun. Data were also obtained 24 hours previous to the eclipse. ...
  • Group velocity tomography of the Indo-Eurasian collision zone 
    Acton, C. E; Priestley, K; Gaur, V. K; Rai, S. S (American Geophysical Union, 2010-12)
    We present results of a Rayleigh and Love wave group velocity dispersion study of the Indo-Eurasian collision zone. Group velocity dispersion curves are measured and combined to produce dispersion maps for 10–70 s period ...
  • Growing importance of conference proceedings in astronomy and astrophysics and its impact on collection development 
    Vagiswari, A; Louis, C (Elsevier, 1995)
    This paper analyses the change in the referencing pattern among the astronomers. There has been an increase in the number of conference proceedings (CP) during the last 10 years. In astronomy alone there were around 131 ...
  • Growth of disc-like pseudo-bulges in SDSS DR7 since z = 0.1 
    Ankit Kumar; Kataria, Sandeep Kumar (Oxford University Press on behalf of Royal Astronomical Society, 2022-08)
    Cosmological simulations predict more classical bulges than their observational counterparts in the local Universe. Here, we quantify evolution of the bulges since z = 0.1 using photometric parameters of nearly 39 000 ...
  • The growth of modern astronomy in India, 1651-1960 
    Kochhar, R. K (Pergamon Press, 1991)
  • GROWTH on S190425z: Searching Thousands of Square Degrees to Identify an Optical or Infrared Counterpart to a Binary Neutron Star Merger with the Zwicky Transient Facility and Palomar Gattini-IR 
    Coughlin, Michael W; Tomás Ahumada; Shreya Anand; Kishalay De; Hankins, Matthew J; Kasliwa, Mansi M; Singer, Leo P; Eric C. Bellm; Igor Andreoni; Bradley Cenko, S; Jeff Cooke; Copperwheat, Christopher M; Dugas, Alison M; Jencson, Jacob E; Perley, Daniel A; Po-Chieh Yu; Varun Bhalerao; Harsh Kumar; Bloom, Joshua S; Anupama, G. C; Ashley, Michael C. B; Ashot Bagdasaryan; Rahul Biswas; Buckley, David A. H; Burdge, Kevin B; Cook, David O; John Cromer; Virginia Cunningham; Antonino D ’ Aì; Dekany, Richard G; Alexandre Delacroix; Simone Dichiara; Duev, Dmitry A; Anirban Dutta; Michael Feeney; Sara Frederick; Pradip Gatkine; Shaon Ghosh; Goldstein, Daniel A; Zach Golkhou, V; Ariel Goobar; Graham, Matthew J; Hidekazu Hanayama; Takashi Horiuchi; Tiara Hung; Jha, Saurabh W; Kulkarni, Shrinivas R; Thomas Kupfer; Masci, Frank J; Paolo Mazzali; Moore, Anna M; Moses Mogotsi; Neill, James D; Chow-Choong Ngeow; Jorge Martínez-Palomera; Valentina La Parola; Pavana, M; Ofek, Eran O; Atharva Sunil Patil; Reed Riddle; Mickael Rigault; Ben Rusholme; Eugene Serabyn; Shupe, David L; Yashvi Sharma; Avinash Singh; Jesper Sollerman; Jamie Soon; Kai Staats; Kirsty Taggart; Hanjie Tan; Tony Travouillon; Eleonora Troja; Gaurav Waratkar; Yoichi Yatsu (IOP Publishing, 2019-11)
    The third observing run by LVC has brought the discovery of many compact binary coalescences. Following the detection of the fi rst binary neutron star merger in this run ( LIGO / Virgo S190425z ) , we performed ...
  • GROWTH on S190426c II: GROWTH-India Telescope search for an optical counterpart with a custom image reduction and candidate vetting pipeline 
    Kumar, Harsh; Bhalerao, Varun; Anupama, G. C; Barway, Sudhanshu; Coughlin, Michael W; De, Kishalay; Deshmukh, Kunal; Dutta, Anirban; Goldstein, Daniel A; Jassani, Adeem; Joharle, Simran; Karambelker, Viraj; Khandagale, Maitreya; Kumar, B; Saraogi, Divita; Sharma, Yashvi; Shenoy, Vedant; Singer, Leo; Singh, A; Waratkar, Gaurav (Oxford University Press on behalf of Royal Astronomical Society, 2022-11)
    S190426c/GW190426 152155 was the first probable neutron star–black hole merger candidate detected by the LIGO-Virgo Collaboration. We undertook a tiled search for optical counterparts of this event using the 0.7-m ...
  • GROWTH-India Observations of Solar System Objects 
    Sharma, Kritti; Kumar, Harsh; Bolin, Bryce; Bhalerao, Varun; Anupama, G. C; Barway, Sudhanshu (Europlanet Science Congress, 2021-09)
    The discovery, characterisation, and monitoring of Near-Earth Objects (NEOs) are critical for understanding and potentially mitigating the long-term threats to our civilisation from Potential Hazardous Asteroids (PHAs). ...
  • GSC 2701-2527, A New Multiperiodic High-Amplitude Delta Scuti Variable 
    Kjurkchieva, D. P; Dimitrov, D. P; Ibryamov, S. I.; Srinivasa Rao, M (Astronomical Society of India, 2013-06)
    Our BVI photometric observations reveal that GSC 2701-2527 is a high amplitude ᵟ Scuti star with quite low temperature. The frequency analysis exhibits that it is multiperiodic pulsator. The obtained period ratio f1/ ...
  • Gyroscopic precession and centrifugal force in the Ernst spacetime 
    Rajesh Nayak, K; Vishveshwara, C. V (Springer, 1997-03)
    The phenomenon of gyroscopic precession in the Ernst spacetime is studied within the framework of the Frenet-Serret formalism. General formulae are obtained for circular orbits. At the same time general relativistic analogues ...
  • Gyroscopic Precession and Inertial Forces in Axially Symmetric Stationary Spacetimes 
    Rajesh Nayak, K; Vishveshwara, C. V (Springer, 1998-04)
    We study the phenomenon of gyroscopic precession and the analogues of inertial forces within the framework of general relativity. Covariant connections between the two are established for circular orbits in stationary ...
  • Gyroscopic precession and inertial forces in the Kerr-Newman spacetime 
    Rajesh Nayak, K; Vishveshwara, C. V (IOP Publishng, 1996-07)
    The phenomenon of gyroscopic precession in the Kerr-Newman spacetime is studied using the Frenet-Serret formalism. General formulae are obtained for circular quasi-Killing trajectories. The motion on the equatorial plane ...

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