R
Ram Sagar
Researcher at Aryabhatta Research Institute of Observational Sciences
Publications - 73
Citations - 3472
Ram Sagar is an academic researcher from Aryabhatta Research Institute of Observational Sciences. The author has contributed to research in topics: Open cluster & Stars. The author has an hindex of 32, co-authored 65 publications receiving 3288 citations. Previous affiliations of Ram Sagar include Ariès & University of Bonn.
Papers
More filters
Journal ArticleDOI
WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007-2008 Unveiling different emission components
C. M. Raiteri,M. Villata,Alessandro Capetti,Margo F. Aller,Uwe Bach,P. Calcidese,Mark Gurwell,Valeri M. Larionov,Valeri M. Larionov,J. M. Ohlert,K. Nilsson,A. Strigachev,Ivan Agudo,Hugh D. Aller,Rumen Bachev,Erika Benítez,Andrei Berdyugin,Markus Böttcher,Carla Buemi,S. Buttiglione,D. Carosati,P. Charlot,P. Charlot,Wen Ping Chen,Deborah Dultzin,E. Forné,Lars Fuhrmann,José L. Gómez,Alok C. Gupta,Jochen Heidt,David Hiriart,W.-S. Hsiao,Martin Jelínek,Svetlana G. Jorstad,Givi N. Kimeridze,Tatiana S. Konstantinova,E. N. Kopatskaya,A. Kostov,Omar M. Kurtanidze,Anne Lähteenmäki,L. Lanteri,L. V. Larionova,Paolo Leto,G. Latev,J. F. Le Campion,J. F. Le Campion,C.-U. Lee,R. Ligustri,Elina Lindfors,Alan P. Marscher,Boyko Mihov,M. G. Nikolashvili,Y. Nikolov,Y. Nikolov,Evgeni Ovcharov,D. Principe,T. Pursimo,B. Ragozzine,Russell M. Robb,J. A. Ros,A. C. Sadun,Ram Sagar,Evgeni Semkov,Lorand A. Sigua,R. L. Smart,M. Sorcia,L. O. Takalo,Merja Tornikoski,Corrado Trigilio,Kyle Uckert,G. Umana,A. Valcheva,A. E. Volvach +72 more
TL;DR: In this paper, a new multi-wavelength campaign of the Whole Earth Blazar Telescope (WEBT) on BL Lacertae, involving three pointings by the XMM-Newton satellite, was carried out to study its emission properties.
Journal ArticleDOI
Star formation in young star cluster NGC 1893
Saurabh Sharma,A. K. Pandey,D. K. Ojha,W. P. Chen,S. K. Ghosh,B. C. Bhatt,Maheswar,Ram Sagar +7 more
TL;DR: In this article, a comprehensive multi-wavelength study of the star-forming region NGC 1893 is presented to explore the effects of massive stars on low-mass star formation.
Journal ArticleDOI
Intra-night Optical Variability of BL Lacs, Radio-Quiet Quasars and Radio-Loud Quasars
TL;DR: In this paper, optical monitoring observations of 20 high-luminosity AGN, 12 of which are radio-quiet quasars (RQQs), were reported.
Posted Content
Multiband optical monitoring of the blazars S5 0716+714 and BL Lacertae
C. S. Stalin,C. S. Stalin,C. S. Stalin,Gopal-Krishna,Ram Sagar,Paul J. Wiita,Vijay Mohan,Ashwani Pandey +7 more
TL;DR: In this article, multiband optical monitoring of two well known blazars, S5 0716+714 and BL Lacertae, carried out in 1996 and 2000-01 with an aim to study optical variations on time scales from minutes to hours and longer.
Journal ArticleDOI
NGC 7654: An interesting cluster to study star formation history
TL;DR: In this paper, the authors used UBV IC photometry in a wide field around the open cluster NGC 7654 for 17 860 stars, down to V 20, and found that the star formation was a gradual process that proceeded sequentially in mass and terminated with the formation of most massive stars.