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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Smartt, R. N; House, L. L (Indian Institute of Astrophysics, Bangalore, 1984)
    Measurements of the polarization of the He I D3 multiplet in a prominence allow the magnetic fields associated with the prominence to be deduced. The amount and angle of the linear polarization are governed by the Hanle ...
  • Raju, K. P; Bromage, B. J. I (Springer, 2014-03)
    The relative Doppler velocities and linewidths in a polar coronal hole and the nearby quiet-Sun region have been obtained from the Solar and Heliospheric Observatory (SOHO)/Coronal Diagnostic Spectrometer (CDS) observations ...
  • Bhattacharyya, J. C (Solar Physics, Vol. 24, No. 2, pp. 274 - 287, 1972-06)
    From a series of long duration continuous Doppler records of selected spectral lines, characteristics of solar velocity oscillations have been studied. Statistical distribution of the durations of the bursts of oscillations ...
  • Sivaraman, K. R (Indian Institute of Astrophysics, Kodaikanal Observatory, Kodaikanal, 1972)
  • Vemareddy, P (IOP Publishing, 2019-02-20)
    Using the photospheric magnetic and coronal observations of Solar Dynamics Observatory, we studied the buildup and eruption of coronal nonpotential magnetic structure in emerging active region (AR) 12673. The velocity field ...
  • Vishwanath, P. R; Sripathi Acharya, B; Bhat, P. N; Chitnis, V. R (International Union of Pure and Applied Physics, 2005)
  • Kharb, P; O'Dea, C. P; Baum, S. A; Hardcastle, M. J; Dicken, D; Croston, J. H; Mingo, B; Noel-Storr, J (Oxford University Press on behalf of the Royal Astronomical Society, 2014-06-01)
    We present the results of high-resolution VLBI (very long baseline interferometry) observations at 1.6 and 4.9 GHz of the radio-loud Seyfert galaxy, Mrk 6. These observations are able to detect a compact radio core in this ...
  • Paragi, Z; Godfrey, L; Reynolds, C; Rioja, M. J; Deller, A; Zhang, B; Gurvits, L; Bietenholz, M; Szomoru, A; Bignall, H. E; Boven, P; Charlot, P; Dodson, R; Frey, S; Garrett, M. A; Imai, H; Lobanov, A; Reid, M. J; Ros, E; Van Langevelde, H. J; Zensus, A. J; Zheng, X W; Alberdi, A; Agudo, I; An, T; Argo, M; Beswick, R; Biggs, A; Brunthaler, A; Campbell, B; Cimo, G; Colomer, F; Corbel, S; Conway, J. E; Cseh, D; Deane, R; Falcke, H .D. E; Gawronski, M; Gaylard, M; Giovannini, G; Giroletti, M; Goddi, C; Goedhart, S; Gomez, J. L; Gunn, A; Kharb, P; Kloeckner, H. R; Koerding, E; Kovalev, Y; Kunert-Bajraszewska, M; Lindqvist, M; Lister, M; Mantovani, F; Marti-Vidal, I; Mezcua, M; McKean, J; Middelberg, E; Miller-Jones, J. C. A; Moldon, J; Muxlow, T; O'Brien, T; Perez-Torres, M; Pogrebenko, S. V; Quick, J; Rushton, A; Schilizzi, R; Smirnov, O; Sohn, B .W; Surcis, G; Taylor, G. B; Tingay, S; Tudose, V. M; van der Horst, A; van Leeuwen, J; Venturi, T; Vermeulen, R; Vlemmings, W. H. T; de Witt, A; Wucknitz, O; Yang, J; Gabanyi, K; Jung, T (International School for Advanced Studies (SISSA), 2015-04)
    Adding VLBI capability to the SKA arrays will greatly broaden the science of the SKA, and is feasible within the current specifications. SKA-VLBI can be initially implemented by providing phased-array outputs for SKA1-MID ...
  • Popescu, M. D; Banerjee, D; O`Shea, E; Doyle, J. G; Xia, L. D (EDP Science, 2005-11)
    Using time series data of spectral lines originating from a wide range of temperatures in the solar transition region, above a polar coronal hole, from SUMER (Solar Ultraviolet Measurements of Emitted Radiation) on SoHO ...
  • Bhargava, B. N; Naqvi, Ali. M (Nature Publishing Group, 1954-03)
    IT is well known that moderate geomagnetic storms tend to recur after 27 days. Such storms are not related to sunspots, are almost always of gradual commencement type and are well marked only during two or three years ...
  • Scott, W. F; Jian, G; Rory, B; Thomas, G. T; Justin, R. C; Nathan, D. L; Massimiliano, E; Bruno, F; Leticia, F; Bruce, G; Scott, G. B; Luan, G; Jonay, I. G. H; Leslie, H; Peng, J; Brian, L; Ben, N; Gustavo, F. P. M; Benjamin, J. S; Keivan, S; Todd, A. T; Benjamin, M. T; John, P. W; Michael, W. V. W; Eric, A; Carlos, A. P; Dmitry, B; Howard, B; Phillip, A. C; Louis, C; Korena, S. C; Luis, N. C; Melanie, L. G; Nelson, H; Stephen, R. K; Gary, R. L; Jian, L; Bo, M; Suvrath, M; Marcio, A. G. M; Elena, M; Viktor, M; Demitri, M; Duy Cuong, N; Daniel, O; Martin, P; Kaike, P; Joshua, P; Rafael, R; Eric, J. R; Basilio, X. S; Donald, P. S; Alaina, S; Audrey, S; Sivarani, T; Stephanie, S; Chelsea, L. M. V; Xiaoke, W; Ji, W; Benjamin, A. W; Gwendolyn, M. W; Bo, Z (IOP Publishing, 2012-09)
    We report the discovery via radial velocity (RV) measurements of a short-period (P = 2.430420±0.000006 days) companion to the F-type main-sequence star TYC 2930-00872-1. A long-term trend in the RV data also suggests the ...
  • Jiang, P; Ge, J; Cargile, P; Crepp, J. R; De Lee, N; Porto de Mello, G. F; Esposito, M.; Ferreira, L. D; Femenia, B; Fleming, S. W; Gaudi, B. S; Ghezzi, L; Gonzalez Hernandez, J. I; Hebb, L; Lee, B. L; Ma, Bo; Stassun, K. G; Wang, Ji; Wisniewski, John P; Agol, Eric; Bizyaev, Dmitry; Brewington, Howard; Chang, Liang; Nicolaci da Costa, Luiz; Eastman, Jason D; Ebelke, Garrett; Gary, Bruce; Kane, Stephen R; Li, Rui; Liu, Jian; Mahadevan, Suvrath; Maia, Marcio A. G; Malanushenko, Viktor; Malanushenko, Elena; Muna, Demitri; Nguyen, Duy Cuong; Ogando, Ricardo L. C; Oravetz, Audrey; Oravetz, Daniel; Pan, Kaike; Pepper, Joshua; Paegert, Martin; Allende Prieto, Carlos; Rebolo, Rafael; Santiago, Basilio X; Schneider, Donald P; Shelden Bradley, Alaina C; Sivarani, T; Snedden, Stephanie; van Eyken, J. C; Wan, Xiaoke; Weaver, Benjamin A; Zhao, Bo (IOP Publishing, 2013-09)
    We report the discovery of a candidate brown dwarf (BD) or a very low mass stellar companion (MARVELS-5b) to the star HIP 67526 from the Multi-object Apache point observatory Radial Velocity Exoplanet Large-area Survey ...
  • Andreoni, Igor; Coughlin, Michael W; Perley, Daniel A; Yao, Yuhan; Lu, Wenbin; Bradley Cenko, S; Kumar, Harsh; Anand, Shreya; Ho, Anna Y. Q; Kasliwal, Mansi M; de Ugarte Postigo, Antonio; Sagues-Carracedo, Ana; Schulze, Steve; Alexander Kann, D; Kulkarni, S. R; Sollerman, Jesper; Tanvir, Nial; Rest, Armin; Izzo, Luca; Somalwar, Jean J; Kaplan, David L; Ahumada, Tomas; Anupama, G. C; Auchettl, Katie; Barway, Sudhanshu; Bellm, Eric C; Bhalerao, Varun; Bloom, Joshua S; Bremer, Michael; Bulla, Mattia; Burns, Eric; Campana, Sergio; Chandra, Poonam; Charalampopoulos, Panos; Cooke, Jeff; D’Elia, Valerio; Das, Kaustav Kashyap; Dobie, Dougal; Fernandez, Jose Feliciano Agui; Freeburn, James; Fremling, Cristoffer; Gezari, Suvi; Goode, Simon; Graham, Matthew J; Hammerstein, Erica; Karambelkar, Viraj R; Kilpatrick, Charles D; Kool, Erik C; Krips, Melanie; Laher, Russ R; Leloudas, Giorgos; Levan, Andrew; Lundquist, Michael J; Mahabal, Ashish A; Medford, Michael S; Coleman Miller, M; Moller, Anais; Mooley, Kunal P; Nayana, A. J; Nir, Guy; Pang, Peter T. H; Paraskeva, Emmy; Perley, Richard A; Petitpas, Glen; Pursiainen, Miika; Ravi, Vikram; Ridden-Harper, Ryan; Riddle, Reed; Rigault, Mickael; Rodriguez, Antonio C; Rusholme, Ben; Sharma, Yashvi; Smith, I. A; Stein, Robert D; Thone, Christina; Tohuvavohu, Aaron; Valdes, Frank; van Roestel, Jan; Vergani, Susanna D; Wang, Qinan; Zhang, Jielai (Springer Nature, 2022-12-15)
    Tidal disruption events (TDEs) are bursts of electromagnetic energy that are released when supermassive black holes at the centres of galaxies violently disrupt a star that passes too close1. TDEs provide a window through ...
  • Ma, Bo; Ge, J; Barnes, R; Crepp, J. R; De Lee, N; Dutra-Ferreira, L; Esposito, M; Femenia, B; Fleming, S. W; Gaudi, B. S; Ghezzi, L; Hebb, L; Gonzalez Hernandez, J. I; Lee, B. L; Porto de Mello, G. F; Stassun, K. G; Wang, J; Wisniewski, J. P; Agol, E; Bizyaev, D; Cargile, P; Chang, L; Nicolaci da Costa, L; Eastman, J. D; Gary, B; Jiang, P; Kane, S. R; Li, R; Liu, J; Mahadevan, S; Maia, M. A. G; Muna, D; Nguyen, D. C; Ogando, R. L. C; Oravetz, D; Pepper, J; Paegert, M; Prieto, C. A; Rebolo, R; Santiago, B. X; Schneider, D. P; Shelden, A; Simmons, A; Sivarani, T; van Eyken, J. C; Wan, X; Weaver, B. A; Zhao, Bo (IOP Publishing, 2013-01)
    We present an eccentric, short-period brown dwarf candidate orbiting the active, slightly evolved subgiant star TYC 2087-00255-1, which has effective temperature T eff = 5903 ± 42 K, surface gravity log (g) = 4.07 ± 0.16 ...
  • Singh, B. B; Britto, R. J; Chitnis, V. R; Shukla, A; Saha, L; Sinha, A; Acharya, B. S; Vishwanath, P. R; Anupama, G. C; Bhattacharjee, P; Gothe, K .S; Nagesh, B. K; Prabhu, T. P; Rao, S. K; Srinivasan, R; Upadhya, S. S (Springer, 2019-12)
    HAGAR is a system of seven Non-imaging Atmospheric Cherenkov Telescopes located at Hanle in the Ladakh region of the Indian Himalay as at an altitude of 4270 meters amsl . Since 2008, we have observed the Crab Nebula to ...
  • Richtler, T; Grebel, E. K; Subramaniam, A; Sagar, R (European Southern Observatory, 1998-01)
    We present CCD photometry in V and I for the metal-rich globular cluster NGC 6528. A comparison with previous photometry reveals discrepancies of the order 0.1 to 0.2 mag in V, emphasizing the need for independent photometry. ...
  • Murty, P. S (American Meteorological Society, 1979-10)
    The possible role in the stratosphere of vibrationally excited chlorine monoxide molecules in the ground electronic state is examined. An infrared vibration-rotation emission spectrum of chlorine monoxide is expected to ...
  • Trivedi, P; Guruprasad, R; Radhakrishnan, R. S (Indian Institute of Astrophysics, Bangalore, 1997)
    Flash spectra were recorded at video rate from Behind, Madhya Pradesh A holographic transmission grating, was used in front of a CCD video camera. Using a. solar Image of 0 5mm diameter, the spectrum on the CCD was recorded ...
  • Paliya, Vaidehi S; Bottcher, M; Diltz, C; Stalin, C. S; Sahayanathan, S; Ravikumar, C. D (IOP Publishing, 2015-10-01)
    The well-studied blazar Markarian 421 (Mrk 421, z = 0.031) was the subject of an intensive multi-wavelength campaign when it flared in 2013 April. The recorded X-ray and very high-energy (E > 100 GeV) γ-ray fluxes are the ...
  • Giridhar, S; Bappu, M. K. V (Indian Institute of Astrophysics, 1978)
    It is shown that the violet edges normally seen in Wolf-Rayet stars around 5800Å are principally due to displaced C IV absorption. The diffuse interstellar bands are seldom of comparable strength and can be seen separately ...

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