IIA Institutional Repository

Browsing by Author "Ghosh, S. K"

Browsing by Author "Ghosh, S. K"

Sort by: Order: Results:

  • Infrared and radio observations towards the ultracompact HII region IRAS 19111+1048. 
    Vig, S; Ghosh, S. K; Kulkarni, V. K; Ojha, D. K; Verma, R. P (Astronomical Society of India, 2003)
    Southern HII region RCW 116B (IRAS 16571-4029) has been mapped simultaneously at two far infrared wavelengths (at 150 and 210 μm) with a resolution of ~1 using the TIFR 1 m balloon-borne telescope. High angular resolution ...
  • Infrared diagnostics for compact HII regions- I 
    Mookerjea, B; Ghosh, S. K (Astronomical Society of India, 1999)
    Compact H II regions have been modelled realistically covering multidimensional parameter space in an effort to develop diagnostic tools. These models consist of embedded exciting ZAMS stars with a spherical cloud of dust ...
  • Infrared diagnostics for compact HII regions- II 
    Mookerjea, B; Ghosh, S. K (Astronomical Society of India, 1999)
    Compact H II regions have been realistically modelled to identify the wavelength regime and type of observables, which are crucial for understanding the physical conditions of the same. Spherically symmetric interstellar ...
  • Infrared emission from IRAS 00338+6312 
    Mookerjea, B; Ghosh, S. K; Karnik, A. D; Rengarajan, T. N; Tandon, S. N; Verma, R. P (Astronomical Society of India, 1999)
    The Galactic star forming region associated with IRAS 00338+6312 has been mapped in 2 Far Infrared (FIR) bands centered around 140 & 185 μm, using the TIFR 100 cm balloon-borne telescope with liquid 3/sup He cooled bolometer ...
  • Infrared L'band (lambda-cen- ~3.9 mu-m) observations with TIFR near-infrared camera (TIRCAM). 
    Ojha, D. K; Ghosh, S. K; Verma, R. P; Anandarao, B. G (Astronomical Society of India, 2003)
    TIRCAM is based on the SBRC InSb Focal Plane Array (58 x 62 pixels) sensitive between 1- 5 μm. TIRCAM system is described in Ojha et al. (2002). TIRCAM had its first light observations during March-April 2001 from Gurusikhar ...
  • Infrared spectral energy distribution of four star forming regions 
    Karnik, A. D; Ghosh, S. K; Rengarajan, T. N; Tandon, S. N; Verma, R. P (Astronomical Society of India, 1999)
    Star forming regions associated with IRAS 19181+1349, 20255+3712, 20178+4046 and 10049+5657 have been mapped simultaneously in two far infrared bands (λeff ~ 130 and 210 µm), using TIFR 1m balloon borne telescope with ...
  • Infrared spectroscopic diagnostics for initial mass function 
    Ghosh, S. K; Mookerjea, B (Astronomical Society of India, 1999)
    The diagnostic values of various atomic/ nebular infrared spectral lines of relatively abundant elements (in different ionization states) in Galactic star forming regions, have been studied quantitatively. The code CLOUDY ...
  • Mapping of the Orion molecular cloud in the [CII] line and continuum at 158 μm 
    Mookerjea, B; Ghosh, S. K; Kaneda, H; Nakagawa, T; Ojha, D. K; Rengarajan, T. N; Shibai, H; Verma, R. P (Astronomical Society of India, 2001)
    A fabry Perot Spectrometer (FPS) tuned to the astrophysically interesting (CII) line at 157.7409 µm, developed at ISAS (Japan) has been successfully interfaced to the TIFR 100 cm far-infrared balloon borne telescope. A ...
  • Mid-and far-infrared studies of galactic compact H II regions 
    Ghosh, S. K (Astronomical Society of India, 2000)
    Several Galactic H II region complexes have been observed in the far infrared (FIR) wavebands using the TIFR 1-m balloon borne telescope, and in the mid infrared (MIR) using the Infrared Space Observatory (ISO). Many of ...
  • Mid-infrared observations of three compact HII regions and PAH emission 
    Verma, R. P; Ghosh, S. K; Karnik, A. D; Mookerjea, B; Rengarajan, T. N (Astronomical Society of India, 1999)
  • Modelling infrared spectra of a few compact HII regions 
    Ghosh, S. K; Verma, R. P (Astronomical Society of India, 1999)
    The observed near infrared to sub-mm spectra of five compact HII regions, viz., IRAS 18116-1646, 18162-2048, 19422+2427, 22308+5812 and 18434-0242, consisting of the continuum as well as several features, have been explained ...
  • Multi-wavelength studies of Galactic HII regions 
    Samal, M. R; Pandey, A. K; Ojha, D. K; Zinchenko, I; Bhatt, B. C; Ghosh, S. K; Pandey, B (Astronomical Society of India, 2010)
    We present the recent results obtained with multiwavelength observations of three Galactic HII regions. Our findings suggest these regions are likely candidates of triggered star formation, where star formation in their ...
  • A Multiwavelength Study of Galactic H II Region Sh 2-294 
    Samal, M. R; Pandey, A. K; Ojha, D. K; Ghosh, S. K; Kulkarni, V. K; Bhatt, B. C (University of Chicago Press, 2007-12)
    We present the observational results of Galactic H ii region Sh 2-294, using optical photometry, narrowband imaging, and radio continuum mapping at 1280 MHz, together with archival data from the 2MASS, MSX, and IRAS surveys. ...
  • A multiwavelength study of star formation in the vicinity of galactic H II region Sh 2-100 
    Samal, M. R; Pandey, A. K; Ojha, D. K; Ghosh, S. K; Kulkarni, V. K; Kusakabe, N; Tamura, M; Bhatt, B. C; Thompson, M. A; Sagar, R (The American Astronomical Society, 2010-05)
    We present multiwavelength investigation of morphology, physical-environment, stellar contents, and star formation activity in the vicinity of star-forming region Sh 2-100. It is found that the Sh 2-100 region contains ...
  • A Multiwavelength Study of the Galactic Star Forming Region Associated with IRAS 20255+3712 / S 106 
    Ghosh, S. K; Kulkarni, V. K; Ojha, D. K; Verma, R. P (Astronomical Society of India, 2003)
    The Galactic star forming region associated with IRAS 20255+3712 / S 106 has been mapped simultaneously in 150 and 210 μm bands using the TIFR 1-metre balloon borne far-infrared (FIR) telescope with an angular resolution ...
  • A multiwavelength study of the massive star-forming region IRAS 06055+2039 (RAFGL 5179) 
    Tej, A; Ojha, D. K; Ghosh, S. K; Kulkarni, V. K; Verma, R. P; Vig, S; Prabhu, T. P (EDP Sciences, 2006-06)
    Aims.We present a multiwavelength study of the massive star-forming region associated with IRAS 06055+2039. Methods.Narrow-band near-infrared (NIR) observations were carried out with UKIRT-UFTI in molecular hydrogen and ...
  • Neutral fermions as the missing mass matter in galactic halos 
    Datta, B; Sivaram, C; Ghosh, S. K (Springer, 1985-04)
    Several independent considerations which rule out the hypothesis that the missing mass in galactic halos is composed of massive neutral fermions such as neutrinos, gravitinos, or photinos are discussed. It is found that ...
  • Noise modeling and analysis of an IMU-based attitude sensor: improvement of performance by filtering and sensor fusion 
    Subramaniam, A; Sindhu, N; Tandon, S. N; Kameswara Rao, N; Postma, J; Cote, Patrick; Hutchings, J. B; Ghosh, S. K; George, K; Girish, V; Mohan, Rekhesh; Murthy, J; Sankarasubramanian, K; Stalin, C. S; Sutaria, F. K; Mondal, Chayan; Snehalata Sahu (SPIE-The International Society for Optical Engineering, 2016-07)
    We describe the characterization and removal of noises present in the Inertial Measurement Unit (IMU) MPU- 6050, which was initially used in an attitude sensor, and later used in the development of a pointing system for ...
  • The outburst and nature of young eruptive low mass stars in dark clouds 
    Ninan, J. P; Ojha, D. K; Bhatt, B. C; Mallick, K. K; Tej, A; Sahu, D. K; Ghosh, S. K; Mohan, V (Astronomical Society of India, 2012)
    The FU Orionis (FUor) or EX Orionis (EXor) phenomenon has attracted increasing attention in recent years and is now accepted as a crucial element in the early evolution of low-mass stars. FUor and EXor eruptions of young ...
  • Performance of the UVIT Level-2 pipeline 
    Ghosh, S. K; Tandon, S. N; Joseph, P; Devaraj, A; Shelat, D. S; Stalin, C. S (Indian Academy of Sciences, 2021-10)
    Performance of the Level-2 pipeline, which translates the UVIT data created by the ISRO’s ground segment processing systems (Level-1) into astronomer ready scientific data products, is described. This pipeline has evolved ...

Search DSpace

Browse

My Account