Relics of Double Radio Sources (2009)
Dwarakanath, K. S., Kale, Ruta
We have formed a new sample which consists of extended extragalactic radio sources without obvious active galactic nuclei (AGN) in them. Most of these sources appear to be dead double radio sources....
A 50 MHz System for GMRT (2009)
Shankar, N. Udaya, Dwarakanath, K. S., Amiri, Shahram, Somashekar, R., Girish, B. S., Laus, Wences, ...
This paper describes a 50 MHz system being developed for GMRT to provide imaging capability in the frequency range 30-90MHz. Due to its larger collecting area and higher antenna efficiency, the low...
Diffuse Radio Emission in Abell 754 (2009)
Kale, Ruta, Dwarakanath, K. S.
We present a low frequency study of the diffuse radio emission in the galaxy cluster A754. We present new 150 MHz image of the galaxy cluster A754 made with the Giant Metrewave Radio Telescope (GMRT)...
HI content and star formation in the interacting galaxy Arp86 (2009)
Sengupta, Chandreyee, Dwarakanath, K. S., Saikia, D. J.
We present the results of Giant Metrewave Radio Telescope (GMRT) observations of the interacting system Arp86 in both neutral atomic hydrogen, HI, and in radio continuum at 240, 606 and 1394 MHz. In...
Verheijen, Marc, Van Gorkom, J.H., Szomoru, A., Dwarakanath, K.S., Poggianti, B.M., Schiminovich, D.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
Verheijen, Marc A. W., Van Gorkom, J. H., Szomoru, A., Dwarakanath, K. S., Poggianti, B. M., Schiminovich, D.
A pilot study with the powerful new backend of the Westerbork Synthesis Radio Telescope (WSRT) of two galaxy clusters at z=0.2 has revealed neutral hydrogen emission from 42 galaxies. The WSRT probes...
HI imaging of galaxies in X-ray bright groups (2007)
Sengupta, Chandreyee;, Dwarakanath, K.S.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
A search for H I 21 cm absorption toward the highest redshift (z~5.2) radio-loud objects (2007)
Carilli, C.L., Wang, Ran, Van Hoven, M.B., Dwarakanath, K.S., Chengalur, Jayaram N., Wyithe, Stuart
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
Spatial and kinematical lopsidedness of atomic hydrogen in the Ursa Major group of galaxies (2007)
Angiras, R.A., Jog, J.C., Dwarakanath, K.S., Verheijen, M.A.W.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
Spatial and Kinematical Lopsidedness of Atomic Hydrogen in the Ursa Major Group of Galaxies (2007)
Angiras, R. A., Jog, C. J., Dwarakanath, K. S., Verheijen, M. A. W.
We have carried out the harmonic analysis of the atomic hydrogen (HI) surface density maps and the velocity fields for 11 galaxies belonging to the Ursa Major group, over a radial range of 4-6 disc...
Spatial and Kinematical Lopsidedness of Atomic Hydrogen in the Ursa Major Group of Galaxies (2007)
Dwarakanath, K S;, Jog, C J;, Angiras, R A;, Verheijen, M A W
Abstract: We have carried out the harmonic analysis of the atomic hydrogen (HI) surface density maps and the velocity fields for 11 galaxies belonging to the Ursa Major group, over a radial range of...
HI imaging of galaxies in X-ray bright groups (2007)
Sengupta, Chandreyee, Balasubramanyam, Ramesh, Dwarakanath, K. S.
Environment plays an important role in the evolution of the gas contents of galaxies. Gas deficiency of cluster spirals and the role of the hot intracluster medium (ICM) in stripping gas from these...
HI imaging of galaxy clusters at z ≈ 0.2, a pilot survey of Abell 963 and Abell 2192 (2007)
Verheijen, M., Gorkom, Jacqueline Van, Szomoru, Arpad, Dwarakanath, K.S., Poggianti, B.M., Schiminovich, D.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
HI imaging of Galaxy Clusters at z=0.2; a Pilot Survey of Abell 963 and Abell 2192 (2007)
Verheijen, Marc, Van Gorkom, Jacqueline, Szomoru, Arpad, Dwarakanath, K. S., Poggianti, Bianca, Schiminovich, David
A pilot study with the powerful new backend of the Westerbork Synthesis Radio Telescope (WSRT) of two galaxy clusters at z=0.2 has revealed neutral hydrogen emission from 39 galaxies. The volume...
Limits on the AGN Activities in X-Ray-underluminous Galaxy Groups (2006)
Dwarakanath, K.S., Nath, Biman B.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
Limits on the AGN activities in X-ray-underluminous galaxy groups (2006)
Dwarakanath, K.S., Nath, Biman B.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
Limits on the AGN activities in X-ray underluminous galaxy groups (2006)
Dwarakanath, K. S., Nath, Biman B.
We have observed four X-ray underluminous groups of galaxies using the Giant Meterwave RadioTelescope. The groups NGC 524, 720, 3607, and 4697 are underluminous in relation to the extrapolation of...
Origin of disc lopsidedness in the Eridanus group of galaxies (2006)
Angiras, R.A., Jog, C.J., Omar, A., Dwarakanath, K.S.
Restricted Access. An Open Access version is available at arXiv.org.
Origin of disc lopsidedness in the Eridanus group of galaxies (2006)
Angiras, R.A., Jog, C.J., Omar, A., Dwarakanath, K.S.
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
Origin of Disc Lopsidedness in the Eridanus Group of Galaxies (2006)
Angiras, R. A., Jog, C. J., Omar, A., Dwarakanath, K. S.
The HI surface density maps for a sample of 18 galaxies in the Eridanus group are Fourier analysed. This analysis gives the radial variation of the lopsidedness in the HI spatial distribution. The...
The Tully-Fisher relations of the Eridanus group of galaxies (2006)
The Tully-Fisher (TF) or the luminosity-linewidth relations of the galaxies in the Eridanus group are constructed using the HI rotation curves and the luminosities in the optical and in the...
The Tully-Fisher relations of the Eridanus group of galaxies (2006)
The Tully-Fisher (TF) or the luminosity line-width relations of the galaxies in the Eridanus group are constructed using the HI rotation curves and the luminosities in the optical and in the...
GMRT HI observations of the Eridanus group of galaxies (2005)
The GMRT HI 21cm-line observations of galaxies in the Eridanus group are presented. The Eridanus group, at a distance of ~23 Mpc, is a loose group of \~200 galaxies. The group extends more than 10...
The HI content of the Eridanus group of galaxies (2005)
The HI content of galaxies in the Eridanus group is studied using the GMRT observations and the HIPASS data. A significant HI deficiency up to a factor of 2-3 is observed in galaxies in the high...
Radio continuum and far-infrared emission from the galaxies in the Eridanus group (2005)
The Eridanus galaxies follow the well-known radio-FIR correlation. Majority (70%) of these galaxies have their star formation rates below that of the Milky Way. The galaxies having a significant...
GMRT HI observations of the Eridanus group of galaxies (2005)
The GMRT HI 21cm-line observations of galaxies in the Eridanus group are presented. The Eridanus group, at a distance of ~23 Mpc, is a loose group of ~200 galaxies. The group extends to more than 10...
Radio continuum and far-infrared emission from the galaxies in the Eridanus group (2005)
The Eridanus galaxies follow the well-known radio-FIR correlation. The majority (70%) of these galaxies have their star formation rates below that of the Milky Way. The galaxies that have a...
The HI content of the Eridanus group of galaxies (2005)
The HI content of galaxies in the Eridanus group is studied using the GMRT observations and the HIPASS data. A significant HI deficiency up to a factor of 2-3 is observed in galaxies in the high...
Mohan, Rekhesh, Dwarakanath, K. S., Srinivasan, G.
We have used the Giant Meterwave Radio Telescope (GMRT) to measure the Galactic HI 21-cm line absorption towards 102 extragalactic radio continuum sources, located at high (|b| >15deg.) Galactic...
Mohan, Rekhesh, Dwarakanath, K. S., Srinivasan, G.
We have carried out a sensitive high-latitude (|b| > 15deg.) HI 21cm-line absorption survey towards 102 sources using the GMRT. With a 3-sigma detection limit in optical depth of ~0.01, this is the...
Kinematics of Diffuse Interstellar Clouds :Recent GMRT Results (2004)
A high latitude HI 21 cm-line absorption survey toward extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with mod(b) > 15 deg. and...
Kinematics of diffuse interstellar clouds: recent GMRT results (2004)
A high latitude HI 21 cm-line absorption survey towards extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with |b|>15o and with a...
Kinematics of diffuse interstellar clouds: recent GMRT results (2004)
high latitude HI 21 cm-line absorption survey towards extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with |b|>15o and with a 21...
On the Origin of the Wide HI Absorption Line Toward Sgr A* (2004)
Dwarakanath, K. S., Goss, W. M., Zhao, J. H., Lang, C. C.
We have imaged a region of about 5' extent surrounding Sgr A* in the HI 21 cm-line absorption using the Very Large Array. A Gaussian decomposition of the optical depth spectra at positions within...
On the origin of the wide HI absorption line towards Sgr A* (2004)
Dwarakanath, K.S., Goss, W.M., Zhao, J.H., Lang, C.C.
We have imaged a region of ~5 extent surrounding Sgr A* in the HI 21 cm-line absorption using the Very Large Array. A Gaussian decomposition of the optical depth spectra at positions within ~2(~5...
Mohan, Rekhesh, Dwarakanath, K.S., Srinivasan, G.
We have used the Giant Meterwave Radio Telescope (GMRT) to measure the Galactic HI 21-cm line absorption towards 102 extragalactic radio continuum sources, located at high (|b| > 15?) Galactic...
Mohan, Rekhesh, Dwarakanath, K.S., Srinivasan, G.
We have carried out a sensitive high-latitude (|b| > 15?) HI 21 cm-line absorption survey towards 102 sources using the GMRT. With a 3σ detection limit in optical depth of ?0.01, this is the most...
GMRT detection of HI 21 cm associated absorption towards the z=1.2 red quasar 3C 190 (2003)
Ishwara-Chandra, C. H., Dwarakanath, K. S., Anantharamaiah, K. R.
We report the GMRT detection of associated HI 21 cm-line absorption in the z=1.1946 red quasar 3C 190. Most of the absorption is blue-shifted with respect to the systemic redshift. The absorption, at...
An HI survey of clusters in the local universe (2003)
Van Gorkom, J.H., Bravo-Alfaro, H, Dwarakanath, K.S., Guhathakurta, P., Poggianti, B.M., Schiminovich, D., ...
Restricted Access.
GMRT detection of HI 21 cm associated absorption towards the z = 1.2 red quasar 3C 190 (2003)
Ishwara-Chandra, C.H., Dwarakanath, K.S., Anantharamaiah, K.R.
We report the GMRT detection of associated HI 21 cm-line absorption in the z = 1.1946 red quasar 3C 190. Most of the absorption is blue-shifted with respect to the systemic redshift. The absorption,...
GMRT and VLA observations of H I and OH from the Seyfert galaxy Mrk 1 (2002)
Omar, A., Dwarakanath, K.S., Rupen, M., Anantharamaiah, K.R.
We present Giant Meterwave Radio Telescope (GMRT) observations of the H I 21 cm line and Very Large Array (VLA) observations of the OH 18 cm line from the Seyfert 2 galaxy Mrk 1. H I emission is...
GMRT and VLA observations of HI and OH from the Seyfert galaxy Mrk 1 (2002)
Omar, A., Dwarakanath, K. S., Rupen, M., Anantharamaiah, K. R.
We present Giant Meterwave Radio Telescope (GMRT) observations of the HI 21 cm line and Very Large Array (VLA) observations of the OH 18 cm line from the Seyfert 2 galaxy Mrk 1. HI emission is...
GMRT HI imaging survey of ERIDANUS group of galaxies (2002)
Omar, Amitesh, Dwarakanath, K. S., Anantharamaiah, K. R.
This project aims to image a subset of galaxies in the nearby group Eridanus in HI emission and in radio continuum using the GMRT. The typical resolution of HI images will be $\sim$1 kpc with a...
Dwarakanath, K.S., Carilli, C.L., Goss, W.M.
Using the Westerbork Synthesis Radio Telescope, we have detected H I 21 cm line absorption in the warm neutral medium of the Galaxy toward the extragalactic source 3C 147. This absorption, at a local...
GMRT detection of HI absorption in the high-redshift red quasar 3C 190 (2002)
Ishwara-Chandra, C.H., Anantharamaiah, K.R., Dwarakanath, K.S.
Presented at the 21st meeting of the Astronomical Society of India, Pune, 2002.
A GMRT H I imaging survey of the ERIDANUS group of galaxies (2002)
Omar, A., Dwarakanath, K.S., Anantharamaiah, K.R.
Presented at the 21st meeting of the Astronomical Society of India, Pune, 2002.
Coma southwest: as seen by the GMRT (2002)
Dwarakanath, K.S., Chengalur, J.N.
Restricted Access. The Universe at Low Radio Frequencies, Proceedings of IAU Symposium 199, held 30 Nov - 4 Dec 1999, Pune, India. Eds. A. Pramesh Rao, G. Swarup, and Gopal-Krishna, 2002.
Mohan, Rekhesh, Dwarakanath, K.S., Srinivasan, G., Chengalur, J.N.
Restricted Access. An open access version is available at NASA ADS (alternative location). The Universe at Low Radio Frequencies, Proceedings of IAU Symposium 199, held 30 Nov - 4 Dec 1999, Pune,...
Extended extragalactic radio emission (2002)
Owen, F.N., Ledlow, M.J., Eilek, J.A., Kassim, N.E., Miller, N.A., Dwarakanath, K.S., ...
Restricted Access. The Universe at Low Radio Frequencies, Proceedings of IAU Symposium 199, held 30 Nov - 4 Dec 1999, Pune, India. Eds. A. Pramesh Rao, G. Swarup, and Gopal-Krishna, 2002.
Dwarakanath, K. S., Carilli, C. L., Goss, W. M.
Using the Westerbork Synthesis Radio Telescope, we have detected HI 21 cm-line absorption in the Warm Neutral Medium of the Galaxy toward the extragalactic source 3C147. This absorption, at an LSR...
GMRT Detection of HI 21 cm-line Absorption from the Peculiar Galaxy in Abell 2125 (2001)
Dwarakanath, K. S., Owen, F. N.
Using the recently completed Giant Meterwave Radio Telescope, we have detected the HI 21 cm-line absorption from the peculiar galaxy C153 in the galaxy cluster Abell 2125. The HI absorption is at a...
GMRT Observations of Interstellar Clouds in the 21cm line of Atomic Hydrogen (2001)
Mohan, Rekhesh, Dwarakanath, K. S., Srinivasan, G., Chengalur, Jayaram N.
Nearby interstellar clouds with high (|v| >/= 10 km/s) random velocities although easily detected in NaI and CaII lines have hitherto not been detected (in emission or absorption) in the HI 21cm...
GMRT detection of HI 21 cm-line absorption from the peculiar galaxy in Abell 2125. (2001)
Using the recently completed Giant Meterwave Radio Telescope, we have detected the HI 21 cm-line absorption from the peculiar galaxy C153 in the galaxy cluster Abell 2125. The HI absorption is at a...
Radio evidence for evolution of galaxies in rich clusters (2001)
Owen, F.N., Morrison, G., Dwarakanath, K.S., Ledlow, M., Miller, N.A.
Restricted Access. Gas and Galaxy Evolution, ASP Conference Proceedings, Vol. 240. Eds. John E. Hibbard, Michael Rupen, and Jacqueline H. van Gorkom. San Francisco: Astronomical Society of the...
Deshpande, A.A., Dwarakanath, K.S., Goss, W.M.
We have obtained the power spectral description of the density and opacity fluctuations of the cold H I gas in the Galaxy toward Cas A and Cygnus A. We have employed a method of deconvolution, based...
Power Spectrum of the density of cold atomic gas in the Galaxy towards Cas A and Cygnus A (2000)
Deshpande, A. A., Dwarakanath, K. S., Goss, W. M.
We have obtained the power spectral description of the density and opacity fluctuations of the cold HI gas in the Galaxy towards Cas A, and Cygnus A. We have employed a method of deconvolution, based...
Extended Extragalactic Radio Emission (2000)
Owen, F. N., Ledlow, M. J., Eilek, J. A., Kassim, N. E., Miller, N. A., Dwarakanath, K. S., ...
Extended radio emission and its relation to parent galaxy properties is briefly reviewed. Our current understanding of the relation between absolute radio and optical luminosity, radio morphology and...
Mohan, Rekhesh, Dwarakanath, K. S., Srinivasan, G., Chengalur, Jayaram N.
We have made HI 21cm-line absorption measurements using the GMRT towards 15 directions in the Galaxy which are known to have high random velocity clouds as seen in the optical absorption lines of...
The astronomical low frequency array: A proposed explorer mission for radio astronomy (2000)
Jones, D.L., Dwarakanath, K.S., Et Al.
Restricted Access. Radio Astronomy at Long Wavelengths, Geophysical Monograph Series, Vol. 119, Eds. R. G. Stone, K. W. Weiler, M. L. Goldstein, and J.-L. Bougeret (American Geophysical Union,...
What would the sky look like at long radio wavelengths? (2000)
Restricted Access. Radio Astronomy at Long Wavelengths, tutorials and reviews from an AGU Chapman conference held Oct. 1998 in Paris, France. Geophysical monograph Series, Vol. 119. Eds. R.G. Stone,...
The ALFA medium explorer mission (2000)
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
Restricted Access.
The ALFA medium explorer mission (2000)
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
The frequency range below a few tens of MHz is unexplored with high angular resolution due to the opacity of Earth's ionosphere. An interferometer array in space providing arcminute angular...
On the different radio source populations in the Butcher-Oemler clusters Abell 2125 and 2645 (1999)
The Abell clusters 2125 and 2645 have different radio source populations, despite being very similar in richness (Abell class 4) and redshift (~0.25). The number density of radio sources in Abell...
Radio emission and the Butcher-Oemler effect in Abell 2125 (1999)
Ledlow, M.J., Owen, F.N., Dwarakanath, K.S., Keel, W.C., Morrison, G.E.
Restricted Access. An open-access version is available at the alternative locations. Observational Cosmology: The Development of Galaxy Systems, Proceedings of the International Workshop held at...
The interstellar clouds of Adams and Blaauw revisited: an HI absorption study - II (1999)
Rajagopal, Jayadev, Srinivasan, G., Dwarakanath, K. S.
In the preceding paper (paper I), we presented HI absorption spectra towards radio sources very close to the lines of sight towards 25 bright stars against which optical absorption spectra had been...
Multiwavelength observation of a new black hole candidate: EXS 1737.9-2952 (1998)
Durouchoux, Ph., Vilhu, O., Corbel, S., Wallyn, P., Dwarakanath, K.S., Huovelin, J., ...
We report a multiwavelength analysis of an unusual high-energy transient: EXS 1737.9-2952. Due to the features this source exhibited in the hard X-ray domain similar to another source in the Galactic...
Detection of H I 21 centimeter absorption by the warm neutral medium (1998)
Carilli, C.L., Dwarakanath, K.S., Goss, W.M.
We have detected H I 21 cm line absorption by the warm neutral medium (WNM) using the Westerbork synthesis radio telescope. The absorption was detected toward Cygnus A at LSR velocities of -40 and...
Detection of HI 21cm Absorption by the Warm Neutral Medium (1998)
Carilli, C. L., Dwarakanath, K. S., Goss, W. M.
We have detected HI 21cm line absorption by the Warm Neutral Medium (WNM) using the Westerbork Synthesis Radio Telescope. The absorption was detected toward Cygnus A at LSR velocities of -40 and -70...
The interstellar clouds of Adams and Blaauw revisited: An HI absorption study - II (1998)
Rajagopal, Jayadev, Srinivasan, G., Dwarakanath, K.S.
In the preceding paper (Paper I), we presented HI absorption spectra towards radio sources very close to the lines of sight towards twenty-five bright stars against which optical absorption spectra...
The interstellar clouds of Adams and Blaauw revisited: An HI absorption study - I (1998)
Rajagopal, Jayadev, Srinivasan, G., Dwarakanath, K.S.
This investigation is aimed at clarifying the nature of the interstellar gas seen in absorption against bright O and B stars. Towards this end we have obtained for the first time HI absorption...
Evidence for thermal absorption inside Cassiopeia A (1995)
Kassim, N.E., Perley, R.A., Dwarakanath, K.S., Erickson, W.C.
Subarcminute resolution images of Cas A at 74 and 333 MHz are presented. Comparison with each other and with higher frequency observations indicates that the spectral index of its nonthermal emission...
Detection of an H I disk in Hydra A? (1995)
Dwarakanath, K.S., Owen, F.N., Van Gorkom, J.H.
We present new observations of the H I absorption system seen toward the core of the radio galaxy Hydra A, which is the central galaxy in a cooling flow cluster Abell 780. Our improved spatial...
A VLA search for neutral hydrogen in cooling flow clusters (1994)
Dwarakanath, K.S., Van Gorkom, J.H., Owen, F.N.
We present a Very Large Array (VLA) search for neutral hydrogen in three clusters, which are considered to be prime examples of so-called cooling flow clusters: Virgo (Virgo A), Abell 2199 (3C 338),...
Subarcminute resolution imaging of radio sources at 74 MHz with the Very Large Array (1993)
Kassim, N.E., Perley, R.A., Erickson, W.C., Dwarakanath, K.S.
A new observing system operating at 74 MHz and providing an angular resolution of 20 sec is currently being tested at the Very Large Array (VLA). The system comprises a prime-focus dipole feed and...
VLA observations of 1E 1740.7-2942 - A search for radio recombination lines of positronium (1993)
Anantharamaiah, K.R., Dwarakanath, K.S., Morris, D., Goss, W.M., Radhakrishnan, V.
We have searched for the Ps87-alpha recombination line of positronium at the position of the Einstein X-ray source 1E 1740.7-2942 which has been identified as a strong source of time-variable...
Low-frequency observations of the Vela supernova remnant and their implications (1991)
Observations of the Vela SNR at 34.5 MHz are reported and improved spectral-index estimates are presented and discussed. The flux densities of Vela X and YZ at 34.5 MHz are estimated to be 1800 and...
A modified algorithm for CLEANing wide-field maps with extended structures. (1990)
Dwarakanath, K.S., Deshpande, A.A., Udaya Shankar, N.
A simple but effective modification to the conventional CLEAN algorithm is suggested. This modification ensures both stability and speed when CLEAN is applied to maps containing a mixture of point...
A synthesis map of the sky at 34.5 MHz. (1990)
Dwarakanath, K.S., Udaya Shankar, N.
This paper describes a wide-field survey made at 34.5 MHz using GEETEE, the low-frequency telescope at Gauribidanur. This telescope was used in the transit mode, and by performing one-dimensional...
A synthesis study of the radio sky at decametre wavelengths /--by K.S. Dwarakanth. (1989)
Illustrations in pocket inside back cover.
How often are remnants like the Crab Nebula born (1985)
Dwarakanath, K.S., Srinivasan, G.
Restricted Access.
On the supernova remnants produced by pulsars. (1984)
Srinivasan, G., Bhattacharya, D., Dwarakanath, K.S.
It is concluded that pulsar-driven supernova remnants (SNRs) are extremely rare objects. Indeed, an analysis of the known sample of plerions suggests a very low birthrate (about 1 in 240 years)....
On the implications of the radio and x-ray pulsar in the supernova remnant MSH 15-52 (1982)
Srinivasan, G., Dwarakanath, K.S., Radhakrishnan, V.
Comparison of the X-ray nebulosity surrounding the X-ray and radio pulsar in the shell-type SNR MSH 15-52 with the Crab nebula leads to an initial period for the pulsar ~ 70 ms. The association of...
Observations of the supernova remnants HB 9 and IC 443 at 34.5 MHz (1982)
Dwarakanath, K.S., Shevgaonkar, R.K., Sastry, Ch.V.
We have observed the extended supernova remnants HB 9 (G 160.5 + 2.8) and IC 443 (G 189.1 + 2.9) at 34.5 MHz with a resolu- tion of 26 arcmin x 40 arcmin. A map of HB 9 is presented. The integrated...
A new look at the birthrate of supernova remnants (1982)
Srinivasan, G., Dwarakanath, K.S.
We have reanalysed a homogeneous catalogue of shell-type supernova remnants and we find that the radio data are consistent with a birthrate of one in 22 ± 3 yr. Our approach is based on the secular...
Sastry, Ch.V., Dwarakanath, K.S., Shevgaonkar, R.K., Krishan, V.
Open Access.
The structure of the Cygnus loop at 34.5 MHz (1981)
Sastry, Ch.V., Dwarakanath, K.S., Shevgaonkar, R.K.
We have observed the large supemoya remnant Cygnus Loop at 34.5 MHz with the low frequency radio telescope at Gauribi- danur, India. A radio map of the region with a resolution of 26 arcmin x 40...
The ALFA medium explorer mission
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
The frequency range below a few tens of MHz is unexplored with high angular resolution due to the opacity of Earth's ionosphere. An interferometer array in space providing arcminute angular...
The ALFA medium explorer mission
Jones, D.L., Allen, R.J., Basart, J.P., Bastian, T., Blume, W.H., Bougeret, J.L., ...
The frequency range below a few tens of MHz is unexplored with high angular resolution due to the opacity of Earth's ionosphere. An interferometer array in space providing arcminute angular...