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Browsing IIAP Publications by Subject "Diffuse radiation"

Browsing IIAP Publications by Subject "Diffuse radiation"

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  • Atmospheric Thermal Emission Effect on Chandrasekhar's Finite Atmosphere Problem 
    Sengupta, Soumya (American Astronomical Society, 2022-09-10)
    The solutions of the diffuse reflection finite atmosphere problem are very useful in the astrophysical context. Chandrasekhar was the first to solve this problem analytically, by considering atmospheric scattering. These ...
  • BEYONDPLANCK - IV. Simulations and validation 
    Brilenkov, M; Fornazier, K. S. F; Hergt, L. T; Hoerning, G. A; Marins, A; Murokoshi, T; Fazlu Rahman; Stutzer, N-O; Zhou, Y; Abdalla, F. B; Andersen, K. J; Aurlien, R; Banerji, R; Basyrov, A; Battista, A; Bersanelli, M; Bertocco, S; Bollanos, S; Colombo, L. P. L; Eriksen, H. K; Eskilt, J. R; Foss, M. K; Franceschet, C; Fuskeland, U; Galeotta, S; Galloway, M; Gerakakis, S; Gjerløw, E; Hensley, B; Herman, D; Hoang, T. D; Ieronymaki, M; Ihle, H. T; Jewell, J. B; Karakci, A; Keihänen, E; Keskitalo, R; Maggio, G; Maino, D; Maris, M; Paradiso, S; Partridge, B; Reinecke, M; Suur-Uski, A-S; Svalheim, T. L; Tavagnacco, D; Thommesen, H; Tomasi, M; Watts, D. J; Wehus, I. K; Zacchei, A (EDP Sciences, 2023-07)
    End-to-end simulations play a key role in the analysis of any high-sensitivity cosmic microwave background (CMB) experiment, providing high-fidelity systematic error propagation capabilities that are unmatched by any other ...
  • COSMOGLOBE DR1 results. I. Improved Wilkinson Microwave Anisotropy Probe maps through Bayesian end-to-end analysis 
    Watts, D. J; Basyrov, A; Eskilt, J. R; Galloway, M; Gjerlow, E; Hergt, L. T; Herman, D; Ihle, H. T; Paradiso, S; Fazlu, Rahman; Thommesen, H; Aurlien, R; Bersanelli, M; Bianchi, L. A; Brilenkov, M; Colombo, L. P. L; Eriksen, H. K; Franceschet, C; Fuskeland, U; Hensley, B; Hoerning, G. A; Lee, K; Lunde, J. G. S; Marins, A; Nerval, S. K; Patel, S. K; Regnier, M; San, M; Sanyal, S; Stutzer, N.O; Verma, A; Wehus, I. K; Zhou, Y (EDP Sciences, 2023-11)
    We present COSMOGLOBE Data Release 1, which implements the first joint analysis of WMAP and Planck LFI time-ordered data, processed within a single Bayesian end-to-end framework. This framework directly builds on a similar ...
  • Diffuse radiation from the Aquila Rift 
    Jyothy, S. N; Murthy, J; Karuppath, N; Sujatha, N. V (Oxford University Press on behalf of the Royal Astronomical Society, 2015-12-01)
    We present an analysis of the diffuse ultraviolet (UV) background in a low latitude region near the Aquila Rift based on observations made by the Galaxy Evolution Explorer (GALEX). The UV background is at a level of about ...
  • The Diffuse Ultraviolet Foreground 
    Murthy, J (Springer, 2014-01)
    Ultraviolet observations from low Earth orbit (LEO) have to deal with a foreground comprised of airglow and zodiacal light which depend on the look direction and on the date and time of the observation. We have used all-sky ...
  • Dust properties from GALEX observations of a UV halo around Spica 
    Shalima, P; Murthy, J; Gupta, R (Terra Scientific Publishing Company, 2013-10-24)
    GALEX has detected ultraviolet halos extending as far as 5° around four bright stars (Murthy and Henry, 2011). These halos are produced by scattering of starlight by dust grains in thin foreground clouds that are not ...
  • Dust scattered radiation in the galactic poles 
    Murthy, J; Henry, R. C; Overduin, James (Indian Academy of Sciences, 2023-12)
    We have modeled the diffuse background at the Galactic Poles in the far-ultraviolet (FUV: 1536 Å) and the near-ultraviolet (NUV: 2316 Å). The background is well-fit using a single-scattering dustmodel with an offset ...
  • Mapping the Diffuse Ultraviolet Sky with the Galaxy Evolution Explorer 
    Murthy, J; Henry, R. C; Sujatha, N. V (IOP Publishing, 2010-12)
    We present a map of the diffuse ultraviolet cosmic background in two wavelength bands (FUV: 1530 Å and NUV: 2310 Å) over almost 75% of the sky using archival data from the Galaxy Evolution Explorer (GALEX) mission. Most ...
  • Non-gaussianity of diffuse galactic synchrotron emission at 408 MHz 
    Rana, S; Ghosh, T; Bagla, Jasjeet S; Pravabati, C (Oxford University Press on behalf of the Royal Astronomical Society, 2018-11)
    Diffuse Galactic emission at low frequencies is a major contaminant for studies of redshifted 21 cm line studies. Removal of these foregrounds is essential for exploiting the signal from neutral hydrogen at high redshifts. ...

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