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Browsing by Author "Bhatt, B. C"

Browsing by Author "Bhatt, B. C"

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  • Deep Impact, Stardust-NExT and the behavior of Comet 9P/Tempel 1 from 1997 to 2010 
    Meech, K. J; Pittichova, J; Yang, B; Zenn, A; Belton, M. J. S; A’Hearn, M. F; Bagnulo, S; Bai, J; Barrera, L; Bauer, J. M; Bedient, J; Bhatt, B. C; Boehnhardt, H; Brosch, N; Buie, M; Candia, P; Chen, W; Chesley, S; Chiang, P; Choi, Y; Cochran, A; Duddy, S; Farnham, T. L; Fernández, Y; Gutiérrez, P; Hainaut, O. R; Hampton, D; Herrmann, K; Hsieh, H; Kadooka, M. A; Kaluna, H; Keane, J; Kim, M; Kleyna, J; Krisciunas, K; Lauer, T. R; Lara, L; Licandro, J; Lowry, S. C; McFadden, L. A; Moskovitz, N; Mueller, B. E. A; Polishook, D; Raja, N. S; Riesen, T; Sahu, D. K; Samarasinha, N. H; Sarid, G; Sekiguchi, T; Sonnett, S; Suntzeff, N; Taylor, B; Tozzi, G. P; Vasundhara, R; Vincent, J; Wasserman, L; Webster-Schultz, B; Zhao, H (Elsevier B.V., 2011-05)
    We present observational data for Comet 9P/Tempel 1 taken from 1997 through 2010 in an international collaboration in support of the Deep Impact and Stardust-NExT missions. The data were obtained to characterize the nucleus ...
  • Discovery of Main-belt Comet P/2006 VW139 by Pan-STARRS1 
    Hsieh, H. H; Yang, Bin; Haghighipour, N; Kaluna, H. M; Fitzsimmons, A; Denneau, L; Novakovic, B; Jedicke, R; Wainscoat, R. J; Armstrong, J. D; Duddy, S. R; Lowry, S. C; Trujillo, C. A; Micheli, M; Keane, J. V; Urban, L; Riesen, T; Meech, K. J; Abe, S; Cheng, Yu-Chi; Chen, Wen-Ping; Granvik, M; Grav, T; Ip, Wing-Huen; Kinoshita, D; Kleyna, J; Lacerda, P; Lister, T; Milani, A; Tholen, D. J; Vereš, P; Lisse, C. M; Kelley, M. S; Fernández, Y. R; Bhatt, B. C; Sahu, D. K; Kaiser, N; Chambers, K. C; Hodapp, K. W; Magnier, E. A; Price, P. A; Tonry, J. L (IOP Publishing, 2012-03-20)
    The main-belt asteroid (300163) 2006 VW139 (later designated P/2006 VW139) was discovered to exhibit comet-like activity by the Pan-STARRS1 (PS1) survey telescope using automated point-spread-function analyses performed ...
  • Disintegration of active asteroid P/2016 G1 (PANSTARRS) 
    Hainaut, O. R; Kleyna, J. T; Meech, K. J; Boslough, Mark; Micheli, Marco; Wainscoat, Richard; Dela Cruz, Marielle; Keane, J. V; Sahu, D. K; Bhatt, B. C (EDP Sciences, 2019-08)
    We report on the catastrophic disintegration of P/2016 G1 (PANSTARRS), an active asteroid, in April 2016. Deep images over three months show that the object is made up of a central concentration of fragments surrounded by ...
  • EPOXI: Comet 103P/Hartley 2 Observations from a Worldwide Campaign 
    Meech, K. J and 194 coauthors; Bhatt, B. C; Sahu, D. K (IOP Publishing, 2011-06-10)
    Earth- and space-based observations provide synergistic information for space mission encounters by providing data over longer timescales, at different wavelengths and using techniques that are impossible with an in situ ...
  • Facilities at Indian Institute of Astrophysics and New Initiatives 
    Bhatt, B. C (Societe Royale des Sciences de Liege, 2018-04)
    The Indian Institute of Astrophysics is a premier national institute of India for the study of and research into topics pertaining to astronomy, astrophysics and related subjects. The Institute’s main campus in Bangalore ...
  • Fine and ultrafine particles at a near–free tropospheric environment over the high-altitude station Hanle in the trans-Himalaya: new particle formation and size distribution 
    Krishna Moorthy, K; Sreekanth, V; Jai Prakash, C; Gogoi, M. M; Suresh Babu, S; Sobhan Kumar, K; Bagare, S. P; Bhatt, B. C; Gaur, V. K; Prabhu, T. P; Shantikumar, N. S (American Geophysical Union, 2011-10)
    Number-size distributions of ultrafine, fine, and accumulation mode aerosols in the size range 5–1300 nm have been measured regularly from the pristine, high-altitude (for 4520 m above mean sea level) station Hanle in the ...
  • Gaia 20eae: A Newly Discovered Episodically Accreting Young Star 
    Ghosh, Arpan; Sharma, Saurabh; Ninan, Joe P; Ojha, Devendra K; Bhatt, B. C; Kanodia, Shubham; Mahadevan, Suvrath; Stefansson, Gudmundur; Yadav, R. K; Gour, A. S; Pandey, Rakesh; Sinha, Tirthendu; Panwar, Neelam; Wisniewski, John P; Canas, Caleb I; Lin, Andrea S. J; Roy, Arpita; Hearty, Fred; Ramsey, Lawrence; Robertson, Paul; Schwab, Christian (American Astronomical Society, 2022-02-10)
    The Gaia Alert System issued an alert on 2020 August 28, on Gaia 20eae when its light curve showed a ∼4.25 magnitude outburst. We present multiwavelength photometric and spectroscopic follow-up observations of this source ...
  • GPS measurements from the Ladakh Himalaya, India: Preliminary tests of plate-like or continuous deformation in Tibet 
    Jade, S; Bhatt, B. C; Yang, Z; Bendick, R; Gaur, V. K; Molnar, P; Anand, M. B; Kumar, D (Geological Society of America, 2004-11)
    Observations of relative motion in a geodetic network in Ladakh, India, and across southern Tibet indicate slow shear on the Karakorum fault, rapid east-west extension across the whole of southern Tibet, and constant ...
  • GPS-derived deformation rates in northwestern Himalaya and Ladakh 
    Jade, S; Raghavendra Rao, H. J; Vijayan, M. S. M; Gaur, V. K; Bhatt, B. C; Kumar, K; Jaganathan, S; Ananda, M. B; Dileep Kumar, P (Springer, 2011-09)
    Deformation rates derived from GPS measurements made at two continuously operating stations at Leh (34.1°N, 77.6°E) and Hanle (32.7°N, 78.9°E), and eight campaign sites in the trans-Himalayan Ladakh spanning 11 years ...
  • GRB 021004: Optical Observations 
    Sahu, D. K; Bhatt, B. C; Anupama, G. C; Prabhu, T. P (NASA, 2002)
  • GRB 050502b, Optical observations 
    Bhatt, B. C; Ramya, S; Anupama, G. C (NASA, 2005)
  • High altitude (∼4520 m amsl) measurements of black carbon aerosols over Western trans-Himalayas: seasonal heterogeneity and source apportionment 
    Babu, S. S; Chaubey, Jai Prakash; Krishna Moorthy, K; Gogoi, M. M; Kompalli, S. K; Sreekanth, V; Bagare, S. P; Bhatt, B. C; Gaur, V. K; Prabhu, T. P; Shantikumar, N. S (American Geophysical Union, 2011-12)
    The first ever, year-round measurements of aerosol black carbon (BC) over the western part of trans- Himalayas are reported from Hanle (∼4520 m above mean sea level). The daily mean BC concentrations varied from as low as ...
  • In fl uence of Wolf – Rayet Stars on Surrounding Star-forming Molecular Clouds 
    Baug, T; Richard de Grijs; Dewangan, L. K; Herczeg, Gregory J; Ojha, D. K; Ke Wang; Licai Deng; Bhatt, B. C (IOP Publishing, 2019-11)
    We investigate the in fl uence of Wolf – Rayet ( W-R ) stars on their surrounding star-forming molecular clouds. We study fi ve regions containing W-R stars in the inner Galactic plane ( l ∼ [ 14 ° ...
  • Integrated parameters of open clusters 
    Pandey, A. K; Bhatt, B. C; Mahra, H. S; Sagar, R (Royal Astronomical Society, 1989-01)
    Integrated magnitudes and colors of population I synthetic clusters have been derived using theoretical evolutionary tracks and an age-dependednt initial mass function. A comparison of the theoretically obtained integrated ...
  • Long-lived atmospheric trace gases measurements in flask samples from three stations in India 
    Lin, X; Indira, N. K; Ramonet, M; Delmotte, M; Ciais, P; Bhatt, B. C; Reddy, M. V; Angchuk, D; Balakrishnan, S; Jorphail, S; Dorjai, T; Mahey, T. T; Patnaik, S; Begum, M; Brenninkmeijer, C; Durairaj, S; Kirubagaran, R; Schmidt, M; Swathi, P. S; Vinithkumar, N. V; Kwok, C. Y; Gaur, V. K (Published by Copernicus Publications on behalf of the European Geosciences Union, 2015-03)
    With the rapid growth in population and economic development, emissions of greenhouse gases (GHGs) from the Indian subcontinent have sharply increased during recent decades. However, evaluation of regional fluxes of GHGs ...
  • Low resolution spectroscopy of selected Algol systems 
    Shanti Priya Devarapalli; Rukmini Jagirdar; Parthasarathy, M; Sahu, D. K; Mohan, V; Bhatt, B. C; Thomas, V. S (Springer, 2018-04)
    The analysis of spectroscopic data for 30 Algol-type binaries is presented. All these systems are short period Algols having primaries with spectral types B and A. Dominant spectral lines were identified for the spectra ...
  • Multi-colour optical monitoring of the intra-day variable blazar S5 0716+71 
    Sagar, R; Gopal-Krishna; Mohan, V; Pandey, A. K; Bhatt, B. C; Wagner, S. J (The European Southern Observatory, 1999-02)
    We report multi-colour optical monitoring of the intra-day variable blazar S5 0716+71 with a dense temporal coverage over a total duration of 4 weeks in February/March 1994. Four filters (BV Johnson and RI Cousins) were ...
  • Multi-observatory observations of night-side of Venus at 2.3 micron - atmospheric circulation from tracking of cloud features 
    Limaye, S; Warell, J; Bhatt, B. C; Fry, P. M; Young, E. F (Astronomical Society of India, 2006)
    Observations of Venus were made during 3 May to 11 May 2004 (117.4o - 125.7o phase angle) and 3 July to 10 July, 2004 (132.5o - 125.1o phase angle) from the 1.2-metre Mt. Abu Telescope at Gurushikhar, Himalayan Chandra ...
  • Multi-wavelength afterglow observations of the high redshift GRB 050730 
    Pandey, S. B; Castro-Tirado, A. J; McBreen, S; Pérez-Ramírez, M. D; Bremer, M; Guerrero, M. A; Sota, A; Cobb, B. E; Jelínek, M; de Ugarte Postigo, A; Gorosabel, J; Guziy, S; Guidorzi, C; Bailyn, C. D; Muñoz-Darias, T; Gomboc, A; Monfardini, A; Mundell, C. G; Tanvir, N; Levan, A. J; Bhatt, B. C; Sahu, D. K; Sharma, S; Bogdanov, O; Combi, J. A (EDP Sciences, 2006-12)
    Context.GRB 050730 is a long duration high-redshift burst (z=3.967) that was discovered by Swift. The afterglow shows variability and was well monitored over a wide wavelength range. We present comprehensive temporal and ...
  • 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 ...

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