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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Characterization of solar multi-scaling magnetic loop interactions 
    Rosa, R. K; Karlicky, M; Zanandrea, A; Sych, R. A; Hanumant, S. S; Krishan, V (American Institute of Physics, 2005-09)
    Solar magnetic loop structures can exist in a broad range of spatio-temporal scales and their mutual interactions are described by nonlinear processes of magnetic reconnection triggered as a secondary regime by a primary ...
  • Characterization of the bent F-state of the CaOh radical by the H-v 
    Chaudhuri, R. K; Freed, K. F; Abrash, S. A; Potts, D. M (Elsevier, 2001-08)
    Although ab initio many-body methods can provide accurate predictions for most small systems, substantial effort is devoted to design and develop fairly accurate and computationally efficient ‘packageable’ methods for ...
  • Characterization of the HD 219134 multi-planet system I. Observations of stellar magnetism, wind, and high-energy flux 
    Folsom, C. P; Fossati, L; Wood, B. E; Sreejith, A. G; Cubillos, P. E; Vidotto, A. A; Alecian, E; Girish, V; Lichtenegger, H; Murthy, J; Petit, P; Valyavin, G (Oxford University Press on behalf of the Royal Astronomical Society, 2018-12)
    HD 219134 hosts several planets, with seven candidates reported, and the two shortest period planets are rocky (4–5 M⊕) and transit the star. Here, we present contemporaneous multiwavelength observations of the star ...
  • Characterization of the HD 219134 multi-planet system II. Stellar-wind sputtered exospheres in rocky planets b & c 
    Vidotto, A. A; Lichtenegger, H; Fossati, L; Folsom, C. P; Wood, B. E; Murthy, J; Petit, P; Sreejith, A. G; Valyavin, G (Oxford University Press on behalf of the Royal Astronomical Society, 2018-12)
    We present a 3D study of the formation of refractory-rich exospheres around the rocky planets HD219134b and c. These exospheres are formed by surface particles that have been sputtered by the wind of the host star. The ...
  • Characterization of the HD 219134 multi-planet system II. Stellar-wind sputtered exospheres in rocky planets b & c 
    Vidotto, A. A; Lichtenegger, H; Fossati, L; Folsom, C. P; Wood, B. E; Murthy, J; Petit, P; Sreejith, A. G; Valyavin, G (Oxford University Press on behalf of the Royal Astronomical Society, 2018-12)
    We present a 3D study of the formation of refractory-rich exospheres around the rocky planets HD219134b and c. These exospheres are formed by surface particles that have been sputtered by the wind of the host star. The ...
  • Characterization of X-ray flare properties of AB Dor 
    Lalitha, S (International Astronomical Union, 2015-08)
    The strong similarities between the flares observed on the Sun and in low mass stars has raised question regarding dynamo in these stars. Using the Sun as a prototype, one may be able to address this. In this paper, we ...
  • Characterizing Spectral Channels of Visible Emission Line Coronagraph of Aditya-L1 
    Ritesh Patel; Megha, A; Shrivastav, Arpit Kumar; Pant, V; Vishnu, M; Sankarasubramanian, K; Banerjee, D (Frontiers, 2021-06)
    Aditya-L1 is India’s first solar mission with the Visible Emission Line Coronagraph (VELC), which consists of three spectral channels taking high-resolution spectroscopic observations of the inner corona up to 1.5 Rʘ at ...
  • Characterizing the companion AGBs using surface chemical composition of barium stars 
    Shejeelammal, J; Goswami, A; Goswami, P. P; Rathour, R. S; Masseron, T (Oxford University Press on behalf of the Royal Astronomical Society, 2020-10)
    Barium stars are one of the important probes to understand the o rigin and evolution of slow neutron-capture process elements in the Galaxy. These are e xtrinsic stars, where the observed s-process element abundances ...
  • Characterizing the Optical Nature of the Blazar S5 1803+784 during Its 2020 Flare 
    Agarwal, A; Pandey, Ashwani; Ozdonmez, Aykut; Ege, Ergun; Avik, Kumar Das; Volkan, Karakulak (IOP Publishing, 2022-07-01)
    We report the results from our study of the blazar S5 1803+784 carried out using quasi-simultaneous B, V, R, and I observations from 2020 May to 2021 July on 122 nights. Our observing campaign detected a historically bright ...
  • Characterizing the Ordinary Broad-line Type Ic SN 2023pel from the Energetic GRB 230812B 
    Srinivasaragavan, Gokul P; Swain, Vishwajeet; O’Connor, Brendan; Anand, Shreya; Ahumada, Tomás; Perley, Daniel; Stein, Robert; Sollerman, Jesper; Fremling, Christoffer; Cenko, S. Bradley; Antier, S; Guessoum, Nidhal; Hussenot-Desenonges, Thomas; Hello, Patrice; Lesage, Stephen; Hammerstein, Erica; Miller, M. Coleman; Andreoni, Igor; Bhalerao, Varun; Bloom, Joshua S; Dutta, Anirban; Gal-Yam, Avishay; Hinds, K-Ryan; Jaodand, Amruta; Kasliwal, Mansi; Kumar, Harsh; Kutyrev, Alexander S; Ragosta, Fabio; Ravi, Vikram; Sharma, Kritti; Teja, Rishabh Singh; Yang, Sheng; Anupama, G. C; Bellm, Eric C; Coughlin, Michael W; Mahabal, Ashish A; Masci, Frank J; Pathak, Utkarsh; Purdum, Josiah; Roberts, Oliver J; Smith, Roger; Wold, Avery (American Astronomical Society, 2024-01-10)
    We report observations of the optical counterpart of the long gamma-ray burst (GRB) GRB 230812B and its associated supernova (SN) SN 2023pel. The proximity (z = 0.36) and high energy (Eγ,iso ∼ 1053 erg) make it an important ...
  • Charged particle trajectories in a toroidal magnetic and rotation-induced electric field around a black hole 
    Sengupta, S (World Scientific Publishing Company, 1997-10)
    Trajectories of charged particles in a combined poloidal, toroidal magnetic field and a rotation-induced unipolar electric field superposed on a Schwarzschild background geometry have been investigated extensively in the ...
  • Charged particle trajectories in the presence of a toroidal magnetic field on a Schwarzschild background 
    Prasanna, A. R; Sengupta, S (Elsevier, 1994-09)
    Trajectories of a single charged particle in the presence of toroidal magnetic fields superposed on the Schwarzschild background geometry have been obtained, and it is shown that the toroidal field repels the particles and ...
  • Charles Michie Smith – founder of the Kodaikanal (Solar Physics) Observatory and beginnings of physical astronomy in India 
    Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2014-02-10)
    It has been about 115 years since the establishment of Kodaikanal Observatory as an extension of the original Madras Observatory, which has evolved into the present Indian Institute of Astrophysics at Bangalore. It is ...
  • Chasing the Total Solar Eclipse 2019 
    Kapoor, R. C (NISCAIR-CSIR, India, 2019-09)
    A solar eclipse with a totality of a rather long duration took place on 2 July 2019. The path of totality started east of New Zealand in the southern Pacific Ocean and passed over parts of Chile and Argentina. The maximum ...
  • Chemical analysis of a carbon-enhanced very metal-poor star: CD-27 14351 
    Drisya, K; Goswami, A; Masseron, T (IOP Publishing, 2017-01-01)
    We present, for the first time, an abundance analysis of a very metal-poor carbon-enhanced star CD-27 14351 based on a high-resolution (R ~ 48,000) FEROS spectrum. Our abundance analysis performed using local thermodynamic ...
  • Chemical analysis of CH stars – I. Atmospheric parameters and elemental abundances 
    Drisya, K; Goswami, A (Oxford University Press on behalf of the Royal Astronomical Society, 2014-05-11)
    Results from high-resolution spectral analyses of a selected sample of CH stars are presented. Detailed chemical composition studies of these objects, which could reveal abundance patterns that in turn provide information ...
  • Chemical analysis of CH stars – II. Atmospheric parameters and elemental abundances 
    Drisya, K; Goswami, A (Oxford University Press on behalf of the Royal Astronomical Society, 2015-01-21)
    We present detailed chemical analyses for a sample of 12 stars selected from the CH star catalogue of Bartkevicius. The sample includes two confirmed binaries, four objects that are known to show radial velocity variations ...
  • Chemical analysis of CH stars – III. Atmospheric parameters and elemental abundances 
    Meenakshi, P; Goswami, A; Goswami, P. P; Shejeelammal, J; Masseron, T (Oxford University Press on behalf of the Royal Astronomical Society, 2019-07)
    Elemental abundances of CH stars can provide observational constraints for theoretical studies on the nucleosynthesis and evolution of low- and intermediate-mass stars. However, available abundance data in literature are ...
  • Chemical analysis of three barium stars: HD 51959, HD 88035, HD 121447 
    Drisya, K; Goswami, A; Sridhar, N; Masseron, T; Meenakshi, P (Oxford University Press on behalf of the Royal Astronomical Society, 2018-05)
    We present elemental abundance results from high-resolution spectral analysis of three nitrogen-enhanced barium stars. The analysis is based on spectra obtained with the fibre- fed extended range optical spectrograph ...
  • Chemical Analysis of Two Extremely Metal-poor Stars HE 2148-2039 and HE 2155-2043 
    Meenakshi, P; Goswami, A (IOP Publishing, 2021-05-01)
    We present elemental abundance results for HE 2148−2039 and HE 2155−2043 based on a detailed high-resolution spectroscopic analysis. The high-resolution Subaru/High Dispersion Spectrograph (HDS) spectra used for our analysis ...

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