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Browsing by Author "Postma, J"

Browsing by Author "Postma, J"

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  • Mapping distortion of detectors in UVIT onboard astroSat observatory 
    Girish, V; Tandon, S. N; Sriram, S; Amit Kumar; Postma, J (Springer, 2017-02)
    Ultraviolet Imaging Telescope (UVIT) is one of the payloads onboard AstroSat, India’s first multi-wavelength Astronomy mission. UVIT is primarily designed to make high resolution images in wide field, in three wavelength ...
  • 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 ...
  • Ultraviolet imaging observations of three jellyfish galaxies: star formation suppression in the centre and ongoing star formation in stripped tails 
    George, K; Poggianti, B. M; Tomicic, N; Postma, J; Cote, P; Fritz, J; Ghosh, S. K; Gullieuszik, M; Hutchings, J. B; Moretti, A; Omizzolo, A; Radovich, M; Sreekumar, P; Subramaniam, A; Tandon, S. N; Vulcani, B (Oxford University Press on behalf of Royal Astronomical Society, 2023-02)
    Spiral galaxies undergo strong ram-pressure effects when they fall into the galaxy cluster potential. As a consequence, their gas is stripped to form extended tails within which star formation can happen, giving them the ...
  • UVIT observations of the star-forming ring in NGC 7252: Evidence of possible AGN feedback suppressing central star formation 
    George, K; Joseph, P; Mondal, Chayan; Devaraj, A; Subramaniam, A; Stalin, C. S; Cote, P; Ghosh, S. K; Hutchings, J. B; Mohan, Rekhesh; Postma, J; Sankarasubramanian, K; Sreekumar, P; Tandon, S. N (EDP Sciences, 2018-05)
    Context. Some post-merger galaxies are known to undergo a starburst phase that quickly depletes the gas reservoir and turns it into a red-sequence galaxy, though the details are still unclear. Aims. Here we explore the ...
  • UVIT view of NGC 5291: Ongoing star formation in tidal dwarf galaxies at ∼ 0.35 kpc resolution 
    Rakhi, R; Santhosh, Geethika; Joseph, Prajwel; George, Koshy; Subramanian, S; Kavila, Indulekha; Postma, J; Duc, Pierre-Alain; Cote, Patrick; Cortese, Luca; Ghosh, S. K; Subramaniam, A; Tandon, Shyam; Hutchings, John; Wesley, P. Samuel; Bharadwaj, Aditya; Niroula, Neeran (Oxford University Press on behalf of Royal Astronomical Society, 2023-06)
    NGC 5291, an early-type galaxy surrounded by a giant H I ring, is believed to be formed from collision with another galaxy. Several star forming complexes and tidal dwarf galaxies are distributed along the collisional ...
  • UVIT view of ram-pressure stripping in action: Star formation in the stripped gas of the GASP jellyfish galaxy JO201 in Abell 85 
    George, K; Poggianti, B. M; Gullieuszik, M; Fasano, G; Bellhouse, C; Postma, J; Moretti, A; Jaffe, Y; Vulcani, B; Bettoni, D; Fritz, J; Cote, P; Ghosh, S. K; Hutchings, J. B; Mohan, Rekhesh; Sreekumar, P; Stalin, C. S; Subramaniam, A; Tandon, S. N (Oxford University Press on behalf of the Royal Astronomical Society, 2018-09)
    Jellyfish are cluster galaxies that experience strong ram-pressure effects that strip their gas. Their Hα images reveal ionized gas tails up to 100 kpc, which could be hosting ongoing star formation. Here, we report the ...

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