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  • Fifteenth General Assembly of the I. A. U. 
    Bhattacharyya, J. C (Astronomical Society of India, 1973-09)
  • Fifth force as a manifestation of torsion 
    de Sabbata, V; Sivaram, C (Plenum Publishing Corporation, 1990-01)
    A deviation from the Newtonian inverse square law can arise from torsion coupling.
  • Fifth Seminar on General Relativity and Gravitation 
    Narlikar, J. V (Astronomical Society of India, 1975-03)
  • Filament activity in a quiet region flare 
    Sundararaman, K; Gupta, S. S; Selvendran, R (Indian Academy of Sciences, 1993-03)
    We have taken the case of a circular H-alpha filament observed on May 9, 1979 erupting into a double-ribbon flare associated with a nonspot region. The plage motions are responsible for the filament reorientation and, here ...
  • Filament Eruption from Active Region 13283 Leading to a Fast Halo-CME and an Intense Geomagnetic Storm on 2023 April 23 
    Vemareddy, P (American Astronomical Society, 2024-02-01)
    Using multi-instrument and multiwavelength observations, we studied a coronal mass ejection (CME) that led to an intense geomagnetic storm on 2023 April 23. The eruption occurred on April 21 in solar active region (AR) ...
  • Filament Eruption in Association with Rotational Motion Near the Filament Footpoints 
    Dhara, Sajal Kumar; Ravindra, B; Banyal, R. K (Elsevier B.V., 2014-01)
    The active region magnetic field surrounding the filament plays an important role in filament formation, their evolution and disruption. We investigated a filament eruption that occurred in southern hemisphere of the Sun ...
  • Filamentary network and magnetic field structures revealed with BISTRO in the highmass star-forming region NGC 2264: global properties and local magnetogravitational configurations 
    Wang, Jia-Wei; Koch, Patrick M; Clarke, Seamus D; Fuller, Gary; Peretto, Nicolas; Tang, Ya-Wen; Yen, Hsi-Wei; Lai, Shih-Ping; Ohashi, Nagayoshi; Arzoumanian, Doris; Johnstone, Doug; Cho, Jungyeon; Liu, Hong-Li; Fanciullo, Lapo; Hwang, Jihye; Pattle, Kate; Poidevin, Frederick; Tahani, Mehrnoosh; Onaka, Takashi; Rawlings, Mark G; Chung, Eun Jung; Lin, Sheng-Jun; Liu, Junhao; Choi, Minho; Lyo, A-Ran; Priestley, Felix; Hoang, Thiem; Tamura, Motohide; Berry, David; Bastien, Pierre; Ching, Tao-Chung; Coude, Simon; Konyves, Vera; Kwon, Woojin; Chen, Mike; Choi, Yunhee; Eswaraiah, Chakali; Archana Soam; Hasegawa, Tetsuo; Qiu, Keping; Bourke, Tyler L; Byun, Do-Young; Chen, Zhiwei; Kang, Ji-hyun; Choi, Youngwoo; Chrysostomou, Antonio; Dai, Sophia; Francesco, James Di; Diep, Pham Ngoc; Li, Guangxing; Doi, Yasuo; Duan, Yan; Duan, Hao-Yuan; Eden, David; Kang, Miju; Fiege, Jason; Fissel, Laura M; Franzmann, Erica; Friberg, Per; Friesen, Rachel; Gledhill, Tim; Li, Di; Graves, Sarah; Greaves, Jane; Griffin, Matt; Karoly, Janik; Gu, Qilao; Han, Ilseung; Hayashi, Saeko; Houde, Martin; Inoue, Tsuyoshi; Iwasaki, Kazunari; Jeong, Il-Gyo; Kataoka, Akimasa; Kawabata, Koji; Khan, Zacariyya; Kim, Mi-Ryang; Kim, Kee-Tae; Lee, Chang Won; Kim, Kyoung Hee; Liu, Tie; Kim, Shinyoung; Kim, Jongsoo; Kim, Hyosung; Kim, Gwanjeong; Kirchschlager, Florian; Kirk, Jason; Kobayashi, Masato I. N; Kusune, Takayoshi; Tang, Xindi; Kwon, Jungmi; Lacaille, Kevin; Liu, Sheng-Yuan; Law, Chi-Yan; Lee, Sang-Sung; Lee, Hyeseung; Lee, Jeong-Eun; Lee, Chin-Fei; Li, Dalei; Li, Hua-bai; Thuong, Hoang Duc; Lu, Xing; Mairs, Steve; Matsumura, Masafumi; Matthews, Brenda; Moriarty-Schieven, Gerald; Furuya, Ray; Nagata, Tetsuya; Nakamura, Fumitaka; Nakanishi, Hiroyuki; Ngoc, Nguyen Bich; Tomisaka, Kohji; Park, Geumsook; Parsons, Harriet; Pyo, Tae-Soo; Qian, Lei; Rao, Ramprasad; Rawlings, Jonathan; Inutsuka, Shu-ichiro; Retter, Brendan; Richer, John; Rigby, Andrew; Tram, Le Ngoc; Sadavoy, Sarah; Saito, Hiro; Savini, Giorgio; Seta, Masumichi; Sharma, Ekta; Shimajiri, Yoshito; Shinnaga, Hiroko; Tsukamoto, Yusuke; Viti, Serena; Wang, Hongchi; Whitworth, Anthony; Wu, Jintai; Chen, Huei-Ru Vivien; Xie, Jinjin; Ward-Thompson, Derek; Yang, Meng-Zhe; Yoo, Hyunju; Yuan, Jinghua; Yun, Hyeong-Sik; Zenko, Tetsuya; Zhang, Chuan-Peng; Zhang, Yapeng; Zhang, Guoyin; Chen, Wen Ping; Zhou, Jianjun; Zhu, Lei; Gouellec, Valentin J. M. Le; Looze, Ilse de; Andre, Philippe; Dowell, C. Darren; Eyres, Stewart; Falle, Sam; Robitaille, Jean-Francois; Loo, Sven van (American Astronomical Society, 2024-02-20)
    We report 850 μm continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B-fields In STar forming Regions Observations large program on the James Clerk Maxwell ...
  • Filling factor determinations and their effects on planetary nebula studies 
    Mallik, D. C. V; Peimbert, M (Instituto de Astronomía, 1988-12)
    The authors have computed the filling factor for a sample of thirty-five galactic PN for which there are distance estimates independent of statistical arguments. They found that about half of the PN in their sample have ...
  • Filter disk rotator 
    Gupta, S. K; Nautiyal, S. L; Negi, B. S (Astronomical Society of India, 1994)
    A filter disk rotator has been designed and developed in the electronics laboratory of Uttar Pradesh State Observatory (UPSO) for photometric observations. A stepper motor is used to rotate the filter disk in the forward ...
  • Filters for NIR astronomical photometry: comparison of commercial IRWG filters and designs using OpenFilters 
    Mishra, Anwesh Kumar; Kamath, U. S (Indian Academy of Sciences, 2022-06)
    The photometric accuracy in the near-infrared (NIR) wavelength range (0.9–2.6 lm) is strongly affected by the variability of atmospheric transmission. The Infrared Working Group (IRWG) has recommended filters that help ...
  • The final state of an evaporating black hole and the dimensionality of the space-time 
    de Sabbata, V; Sivaram, C (D. Reidel Publishing Company, 1990)
  • Finding the Critical Decay Index in Solar Prominence Eruptions 
    Vasantharaju, N.; Vemareddy, P; Ravindra, B; Doddamani, V. H (IOP Publishing, 2019-11)
    The background fi eld is assumed to play a prime role in erupting structures like prominences. In the fl ux rope models, the critical decay index ( n c ) is a measure of the rate at which background fi eld ...
  • Fine and ultrafine particles at a near–free tropospheric environment over the high-altitude station Hanle in the trans-Himalaya: new particle formation and size distribution 
    Krishna Moorthy, K; Sreekanth, V; Jai Prakash, C; Gogoi, M. M; Suresh Babu, S; Sobhan Kumar, K; Bagare, S. P; Bhatt, B. C; Gaur, V. K; Prabhu, T. P; Shantikumar, N. S (American Geophysical Union, 2011-10)
    Number-size distributions of ultrafine, fine, and accumulation mode aerosols in the size range 5–1300 nm have been measured regularly from the pristine, high-altitude (for 4520 m above mean sea level) station Hanle in the ...
  • Fine image motion controler for Kodaikanal tunnel telescope 
    Thulasidharen, K. C; Prabhu, K; Rangarajan, K. E; Vasantharaju, N; Prabhu Ramkumar, B (Indian Institute of Astrophysics, 2013-05-06)
    Automation of the spectropolarimetric observations at Kodaikanal tunnel telescope needs placement of the Sun's image on the spectrograph slit and scanning it across the region of interest. This requirement can be achieved ...
  • Fine structure in solar decametric radiation 
    Thejappa, G; Sastry, Ch. V; Gopalswamy, N (Harwood Academic Publishers, 1984)
    Observations and interpretations of some of the fine structure in decametric solar radio emission -such as (1) the time structure of type III bursts, (2) absorption bursts, and (3) slowly drifting spikes -are presented. ...
  • Fine Structure in the Arc Spectra of Indium and Thallium 
    Narayan, A. L (Nature Publishing Group, 1931-10-17)
    Indium.-The hyperfine structures of a few indium arc lines have been reported by Jackson1 and McLennan.2 Jackson observed that each of the lines l2S½-22P½ and is a quartet; while McLennan observed only three components. ...
  • Fine- scale magnetic features in the solar atmosphere 
    Chitta, Lakshmi Pradeep (Indian Institute of Astrophysics, 2014-06)
    The surface of the Sun and solar-type stars is permeated by magnetic fields with a va- riety of spatial and temporal scales. The spatial scales range from sub-arcsec tangled fields that are yet to be observed (inaccessible ...
  • A Finite Classical Model of the Electron with Torsion and Strong Gravity 
    de Sabbata, V; Sivaram, C (John Wiley & Sons, Inc., 1990)
  • Finite temperature neutron matter and rotating neutron stars in the quark meson coupling model 
    Panda, P. K; Sahu, R; Das, C (The American Physical Society, 1999-09)
    A mean-field description of nonoverlaping nucleon bags bound by the self-consistent exchange of σ, ω, and ρ mesons is used to investigate the properties of neutron matter at finite temperature. We use the equation of state ...
  • The first aluminum coating of the 3700 mm primary mirror of the Devasthal Optical Telescope 
    Bheemireddy, K. R; Maheswar, G; Pant, J; Omar, A; Kumar, B; Uddin, W; Nirmal, K (SPIE-The International Society for Optical Engineering, 2016-07)
    Initially the primary mirror of the 3.6m Devasthal Optical Telescope is uncoated polished zerodur glass supplied by Lytkarino Optical Glass Factory, Russia/Advanced Mechanical and Optical Systems, Belgium. In order to do ...

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