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Browsing by Author "Singh, M"

Browsing by Author "Singh, M"

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  • New monochromators of concave grating suitable for space telescopes 
    Singh, M (Optical Society of America, 1978)
    Three types of new mono chromators based on the new mounting of concave grating by Singh Majumdar (SM) are described. These mono chromators are very compact and simple in operation, fulfilling the requirements of a mono ...
  • New mounting for x-ray and extreme ultra-violet concave holographic grating 
    Reddy, G. P; Singh, M (Institute of Physics, 1988-04)
    An entirely new mounting for concave holographic gratings for X-ray and the extreme ultraviolet (EUV) has been proposed and its properties have been investigated theoretically. Design parameters for recording a holographic ...
  • New mountings of concave reflection holographic grating 
    Singh, M; Reddy, G. P (Elsevier, 1987-06)
  • A new normal incidence concave holographic grating mounting 
    Reddy, G. P; Singh, M (Elsevier, 1989-09)
    In this paper we present a new spectrograph for extreme ultraviolet region. It is based on unconventional focussng properties of a concave holographic grating so far unexplored. The theoretical results shows that it will ...
  • A new probable Be Star Alpha Leo 
    Singh, M (Konkoly Observatory, 1982-08-16)
  • New technique of holographic multiplexing 
    Singh, M (National Institute of Science Communication And Information Resources, 1978-08)
  • Observational properties of a type Ib supernova MASTER OT J120451.50+265946.6 in NGC 4080 
    Singh, M; Misra, K; Sahu, D. K; Dastidar, R; Gangopadhyay, A; Srivastav, S; Anupama, G. C; Bose, S; Lipunov, V; Chakradhari, N. K; Brajesh Kumar; Pandey, S. B; Gorbovskoy, E; Balanutsa, P (Oxford University Press on behalf of the Royal Astronomical Society, 2019-06)
    MASTER OT J120451.50+265946.6 (M12045), discovered by the MASTER Global Robotic Net, is a Type Ib supernova (SN) that exploded in NGC 4080. We present the BVRI photometric and spectroscopic observations up to ∼250 d since ...
  • On the production of hydrocarbons in Titan's atmosphere 
    Saxena, P. P; Bhatnagar, S; Singh, M (Astronomical Society of India, 2003)
    The production of C(1 D) atoms and their role in the production of (C1, C2, C3, C4) hydrocarbons in Titan's atmosphere are discussed. The reaction between C(1 D) atom and H2 molecule to produce the methylidyne (CH) radical ...
  • The optical properties of three Type II supernovae: 2014cx, 2014cy, and 2015cz 
    Dastidar, R; Misra, K; Singh, M; Pastorello, A; Sahu, D. K; Wang, X; Gangopadhyay, A; Tomasella, L; Zhang, J; Bose, S; Mo, J; Elias-Rosa, N; Tartaglia, L; Yan, S; Brijesh Kumar; Anupama, G. C; Pandey, S. B; Rui, L; Zhang, T; Terreran, G; Ochner, P; Huang, F (Oxford University Press on behalf of the Royal Astronomical Society, 2021-06)
    We present the photometric and spectroscopic analysis of three Type II supernovae (SNe): 2014cx, 2014cy, and 2015cz. SN 2014cx is a conventional Type IIP with shallow slope (0.2 mag/50 d) and an atypical short plateau ...
  • Photometric and polarimetric observations of fast declining Type II supernovae 2013hj and 2014G 
    Bose, S; Kumar, B; Misra, K; Matsumoto, K; Brajesh Kumar; Singh, M; Fukushima, D; Kawabata, M (Oxford University Press on behalf of the Royal Astronomical Society, 2016-01)
    We present broad-band photometric and polarimetric observations of two Type II supernovae (SNe) 2013hj and 2014G. SN 2014G is a spectroscopically classified Type IIL event, which we also confirm photometrically because ...
  • Production of sulphur dimers (S2) in Comet C/1996 B2 (Hyakutake) 
    Saxena, P. P; Singh, M; Bhatnagar, S (Astronomical Society of India, 2003)
    The reaction mechanism involving the association of two sulphur atoms through ethylene (C2H4), the latter acting as a catalyst to produce cometary sulphur dimers (S2) (Saxena & Misra, 1995), has been employed to compute ...
  • Seya namioka monochromators theory and design of holographic concave grating 
    Singh, M; Reddy, G. P (Elsevier, 1986-11)
  • Site characterization for the UPSO-TIFR telescope 
    Sagar, R; Uddin, W; Pandey, A. K; Stalin, C. S; Mohan, V; Sanwal, B. B; Gupta, S. K; Yadav, R. K. S; Durgapal, A. K; Joshi, S; Kumar, B; Gupta, A. C; Joshi, Y; Srivastava, J. B; Chaubey, U. S; Singh, M; Pant, P; Gupta, K. G; Padalia, T. D (Astronomical Society of India, 2000)
    The Uttar Pradesh State Observatory, Naini Tal and Tata Institute of Fundamental Research, Mumbai plan to install jointly a 3 metre size optical telescope at Devasthal located east of Naini Tal about 50 km by road. The ...
  • SN 2013ej: a type IIL supernova with weak signs of interaction 
    Bose, S; Sutaria, F. K; Kumar, B; Duggal, C; Misra, K; Brown, P. J; Singh, M; Dwarkadas, V; York, D. G; Chakraborti, S; Chandola, H. C; Dahlstrom, J; Ray, A; Safonova, M (IOP Publishing, 2015-06)
    We present optical photometric and spectroscopic observations of SN 2013ej. It is one of the brightest Type II supernovae (SNe II) exploded in a nearby (∼10 Mpc) galaxy, NGC 628. The light-curve characteristics are similar ...
  • SN 2015as: a low-luminosity Type IIb supernova without an early light-curve peak 
    Gangopadhyay, A; Misra, K; Pastorello, A; Sahu, D. K; Tomasella, L; Tartaglia, L; Singh, M; Dastidar, R; Srivastav, S; Ochner, P; Brown, P. J; Anupama, G. C; Benetti, S; Cappellaro, E; Brajesh Kumar; Kumar, B; Pandey, S. B (Oxford University Press on behalf of the Royal Astronomical Society, 2018-05)
    We present results of the photometric (from 3 to 509 days past explosion) and spectroscopic (up to 230 days past explosion) monitoring campaign of the He-rich Type IIb supernova (SN) 2015as. The (B-V) colour evolution of ...
  • SN 2015ba: a Type IIP supernova with a long plateau 
    Dastidar, R; Misra, K; Hosseinzadeh, G; Pastorello, A; Pumo, M. L; Valenti, S; McCully, C; Tomasella, L; Arcavi, I; Elias-Rosa, N; Singh, M; Gangopadhyay, A; Howell, D. A; Morales-Garoffolo, A; Zampieri, L; Kumar, Brijesh; Turatto, M; Benetti, S; Tartaglia, L; Ochner, P; Sahu, D. K; Anupama, G. C; Pandey, S. B (Oxford University Press on behalf of the Royal Astronomical Society, 2018-09)
    We present optical photometry and spectroscopy from about a week after explosion to ∼272 d of an atypical Type IIP supernova, SN 2015ba, which exploded in the edge-on galaxy IC 1029. SN 2015ba is a luminous event with an ...
  • SN 2016B a.k.a. ASASSN-16ab: a transitional Type II supernova 
    Dastidar, R; Misra, K; Singh, M; Sahu, D. K; Pastorello, A; Gangopadhyay, A; Tomasella, L; Benetti, S; Terreran, G; Sanwal, Pankaj; Kumar, B; Singh, A; Brajesh Kumar; Anupama, G. C; Pandey, S. B (Oxford University Press on behalf of the Royal Astronomical Society, 2019-06)
    We present photometry, polarimetry, and spectroscopy of the Type II supernova ASASSN-16ab/SN 2016B in PGC 037392. The photometric and spectroscopic follow-up commenced about 2 weeks after shock breakout and continued until ...
  • Some vibrational bands of A-X system of BO molecule in the umbral spectrum of Sun 
    Singh, M; Saha, N; Sharma, C. S (Astronomical Society of India, 1996)
  • Some vibrational bands of B-X system of AlO molecule in the sunspot spectra 
    Singh, M; Chaturvedi, J. P (Astronomical Society of Indian, 1986-09)
    Vibrational transition probabilities, namely Franck-Condon factors and average r centroids, have been evaluated using an approximate analytical method for the B-X system of the AIO molecule. RKRV potential energy curves ...
  • Spectrophotometric observations of some Be stars 
    Singh, M; Sanwal, B (Astronomical Society of India, 1996)
    Using EG & G spectrograph coupled with reticon array detector and Optical Multichannel Analyser (OMA) at the Cassegrain focus of the 104 cm telescope of the U.P. State Observatory, Naini Tal, several well known bright Be ...

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