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  • Temporal variability and radiative impact of black carbon aerosol over tropical urban station Hyderabad 
    Dumka, U. C., et al. (Elsevier, 2013)
    Time variability of black carbon (BC) aerosols over different timescales (daily, weekly and annual) is studied over a tropical urban location Hyderabad in India using seven channel portable Aethalometer. The results for ...
  • Teutsch 76: A deep near-infrared study 
    Shrama, Saurabh, et.al; Panwar, Neelam; Verma, Aayushi; Ghosh, Arpan; Chand, Tarak (Journal Astrophysical Astronomy, 2023-06)
    We have performed a detailed analysis on the Teutsch 76 (T76) open cluster using the deep near infrared (NIR) observations taken with the TANSPEC instrument mounted on the 3.6m Devasthal optical telescope along with the ...
  • Theoretical and Numerical investigations of Accretion-Ejection mechanism around compact objects 
    Kumar, Rajiv (ARIES, Nainital, 2016-03)
    The goal of this thesis is to understand the black hole accretion process, out ows and jets, and predict its observational properties. In the study of accretion disc, the highly non-linear process involves a transport ...
  • The Thirty Meter Telescope – Observatory GenNext 
    Sagar, R. (Indian Academy of Sciences, 2013)
    Optical Astronomy is as old as human life itself since the human eye can also func- tion as a telescope, a detector and an analyser. However, the importance, potential, and power of optical telescopes in discovering and ...
  • Three- colour photometry of GH pegasi 
    Srivastva, R. K.; Padalia, T. D. (1974)
    The geometrical element of the system GH pegasi and a slightly improved period of 2ᵈ.556136 have been given.
  • Three- colour photometry of the eclipsing binary EI cephei 
    Padalia, T. D.; Srivastava, R. K. (1975)
    The photoelectric elements of the system EI cephei have been determined U,B,V colours. The absolute dimensions have been determined and some evolutionary aspects have been discussed.A modified period of 8ᵈ.439334 has been ...
  • Three- colour photometry of TW CAS 
    Kandpal, C. D. (1975)
    Photoelectric elements of the system TW Cas have been determined in U,B and V filters. A refined period of 1ᵈ.428 324 77 has been given though no change in period is noticed. Spectroscopic elements given by struve have ...
  • Tight constraints on the existence of additional planets around HD 189733 
    Hrudkova, M.; Skillen, I.; Benn, C. R.; Gibson, N. P.; Pollacco, D.; Nesvorny, D.; Augusteijn, T.; Tulloch, S. M.; Joshi, Y. C. (2010)
    We report a transit timing study of the transiting exoplanetary system HD 189733. In total, we observed 10 transits in 2006 and 2008 with the 2.6-m Nordic Optical Telescope, and two transits in 2007 with the 4.2-m William ...
  • Time delay between H-alpha and soft x-ray emissions during solar flares 
    Verma, V. K.; Pande, M. C. (1985)
    A statistical analysis of time delay between H-alpha and soft x-ray (SXR) emissions at onset and peak respectively during solar flares is presented. We find that at the onset of flares SXR emission starts simultaneously ...
  • Time delay between Hα and hard X-ray emissions during implusive solar flares 
    Verma, V. K.; Pande, M. C. (1985)
    This investigation shows that statistically there are significant time delay between Hα and hard X-ray (HXR) emissions during solar flares; most impulsive flares produce HXR emissions up to ~1 min before and up to 2 min ...
  • Time resolved photometric and spectroscopic analysis of chemically peculiar star 
    Joshi, S.; Joshi, G. C.; Joshi, Y. C.; Aggrawal, R. (IAU, 2014)
    Here we present the report on the "Nainital-Cape survey" research project aiming to search for and study the pulsational variability of main-sequence chemically peculiar (CP) stars. For this study, the time-series photometric ...
  • Time-resolved photometric and spectroscopic analysis of the luminous Ap star HD 103498 
    Joshi, S.; Ryabchikova, T.; Kochukhow, O.; Sachkov, M.; Tiwari, S. K.; Chakradhari, N. K.; Piskunov, N. (2010)
    We present the results of the photometric and spectroscopic monitoring of the luminous Ap star HD103498. The time-series photometric observations were carried out on 17 nights using a three-channel fast photometer attached ...
  • TIRCAM2 camera interface on the side port of 3.6-m Devasthal Optical Telescope 
    Bhagat, Shailesh B.et.al; Reddy, B. Krishna; Nanjappa, Nadish; Bangia, Tarun; Shrama, Saurabh (Journal Astrophysical Astronomy, 2023-06)
    TIFR Near Infrared Imaging Camera-II (TIRCAM2) is being used at the 3.6-m Devasthal Optical Telescope (DOT) operated by Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, Uttarakhand, India. ...
  • TIRCAM2 fast sub-array readout mode for lunar occultation studies 
    Naik, Milind B.,et.al; Shrama, Saurabh; Ghosh, Arpan (Journal Astrophysical Astronomy, 2023-06)
    TIFR Near Infrared Imaging Camera-II (TIRCAM2) is being used at the Devasthal Optical Telescope (DOT) operated by Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, Uttarakhand, India. In addition ...
  • Top-of-atmosphere radiative cooling with white roofs: experimental verification and model-based evaluation 
    Salamanca, F. et. al.; Naja, M. (2012)
    We evaluate differences in clear-sky upwelling shortwave radiation reaching the top of the atmosphere in response to increasing the albedo of roof surfaces in an area of India with moderately high aerosol loading. Treated ...
  • The transience and persistence of high optical polarisation state in beamed radio quasars 
    Chand, Krishan; Krishna, Gopal; Omar, Amitesh; Chand, Hum; Bisht, P. S. (Publications of the Astronomical Society of Australia, 2023-02)
    We examine the long-term stability (on decade-like timescales) of optical ‘high polarisation’ (HP) state with popt > 3%, which commonly occurs in flat-spectrum (i.e., beamed) radio quasars (FSRQs) and is a prominent marker ...
  • A transit timing analysis of seven RISE light curves of the exoplanet system HAT-P-3 
    Gibson, N. P.; Pollacco, D. L.; Barros, S.; Benn, C.; Christian, D.; Hrudkova, M.; Joshi, Y. C.; Keenan, F. P.; Simpson, E. K.; Skillen, I.; Steele, I. A.; Todd, I. (2010)
    We present seven light curves of the exoplanet systemHAT-P-3, taken as part of a transit timing programme using the rapid imager to search for exoplanets instrument on the Liverpool Telescope. The light curves are analysed ...
  • TransitFit: combined multi-instrument exoplanet transit fitting for JWST, HST, and ground-based transmission spectroscopy studies 
    Hayes, J. J. C.; Priyadarshi, A.; Kerins, E.; Awiphan, S.; McDonald, I.; A-thano, N.; Morgan, J.S.; Humpage, A.; Charles, S.; Wright, M.; Joshi, Y. C.; Jiang, Ing-Guey; Inyanya, T.; Padjaroen, T.; Munsaket, P.; Chuanraksasat, P.; Komonjinda, S.; Kittara, P.; Dhillon, V. S.; Marsh, T. R.; Reichart, D. E.; Poshyachinda, S. (Monthly Notices of the Royal Astronomical Society, 2024-01)
    We present TRANSITFIT1, a package designed to fit exoplanetary transit light curves. TRANSITFIT offers multi-epoch, multi wavelength fitting of multi-telescope transit data. TRANSITFIT allows per-telescope detrending to ...
  • TRANSITIONS AND PERSISTENCE OF BLAZAR STATE IN BEAMED RADIO QUASARS 
    Chand, Krishan (ARIES, Nainital, 2022-12)
    A compact region at the centre of a galaxy known as an active galactic nucleus (AGN) generates a significant amount of energy that is not directly due to stars. It is believed that the accretion of materials onto ...
  • Transport effects on the vertical distribution of tropospheric ozone over the tropical marine regions surrounding India 
    Lal, S., et al.; Naja, M.; Sarangi, T. (American Geophysical Union, 2013)
    The measurements of vertical distribution of ozone have been made over the Bay of Bengal and the Arabian Sea in spring 2006 during a cruise campaign, namely, the Integrated Campaign for Aerosol, Gases and Radiation Budget. ...

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