1. Member of the scienti c organizing committee (SOC) of the second BINA workshop to be held
at ROB, Brussels from 09-12 October 2018.
2. Co-ordinator, member of the local organizing committee (LOC) and member of the scienti c
organizing committee (SOC) of the fi rst Belgo-Indian Network on Astronomy and Astrophysics
(BINA), held at ARIES from 15 to 18 November 2016.
3. Co-ordinator of the international workshop entitled ARIES International Workshop on Aster-
oseisomology" held at ARIES, Nainital from 4 to 6 December 2004.
4. Member of Local Organizing Committee(LOC) for organizing a bi-lateral Indo-Russian work-
shop on Gamma-ray bursts, evolution of massive stars and star formation at high red-shifts"
at ARIES, Nainital from 2 to 4 March 2011
5. Organized an Indo-South African workshop from 30 October to 01 November 2008 as a part of
Indo-South African collaboration and delivered a talk on Nainital-Cape Survey" project.
6. Member for organizing meeting of Astronomical Society of India ARIES, Nainital in Feb. 2005.
7. Member of LOC for a summer school on Introductory Astronomy, Astrophysics and Atmo-
spheric Physics" at ARIES, Nainital in June 2002 and June 2004.
8. Member of LOC for organizing UPSO-IUCAA workshop on Observational programme with
2-m class optical telescopes" at ARIES, Nainital in October, 1999.
9. Member of LOC for organizing the Young Astronomers Meet at ARIES, Nainital in June 1999.
1. Attend a conference on Advance in Physics from small to large scales" at DSB, Campus
Nainital, Kumaun University Nainital.
2. Attended the IUCAA Sponsored AstroSat Data Analysis Workshop held at ARIES, Nainital
from 08 to 11 August 2017.
3. Participated in a conference on Complex System : Application in Developmental Problems"
at Delhi University, South Campus held on 20 March 2017.
4. Attended the Thirty Meter Telescope Meeting on Planning for Science with TMT : Challenges
and Capabilities" held at ARIES from 5 to 6 November 2014.
5. Attended an international IAU conference on New windows on massive stars: asteroseismology,
interferometry, and spectro-polarimetry" and presented poster on Time Resolved Photometric
and Spectroscopic Analysis of Chemically Peculiar Stars" at University of Geneva, Switzerland
from 23-27 June 2014.
6. Participated in an IAU workshop on OAD at SAAO, South Africa from 12 to 14 December
2011.
7. Attended a bilateral Indo-Russian workshop on Gamma ray bursts, evolution of massive stars
and star formation at high red-shifts" at ARIES, Nainital from 2 to 4 March 2010.
8. Attended an International workshop SKA Calibration and Imaging" at SAAO, South Africa
from 5 to 6 December 2006.
9. Attended an international workshop on the Future of Asteroseismology" at Institute of Astro-
physik, University of Vienna from 5 to 7 September 2006.
10. Attended astrosat workshop on Black Hole Astrophysics at BARC, Mumbai, in May 2004.
11. Attended 22nd meeting of Astronomical Society of India, DDU University, Gorakhpur, India in
Nov. 2000.
1. Invited talk on the topic The Nainital-Cape Survey : A contribution to Asteroseismology"
on 12 October 2017 during a one day workshop held at Royal Observatory of Belgium (ROB),
Brussels.
2. Invited talk on Nainital-Cape survey project : Results and Future Perspectives" at North
West University, Ma keng South Africa on 22 March 2017.
3. Invited poster presentation on The Nainital-Cape Survey during the rst BINA workshop on
Instrumentation and Science with 3.6-m DOT and 4.0-m ILMT" held at Nainital from 15-18
November 2016.
4. Invited remote poster presentation on The Nainital Cape Survey : A Project initiated by
Don Kurtz et al. at ARIES Nainital" in a conference on Understanding the roles of rotation,
pulsation and chemical peculiarities in the upper main sequence held at University of Central
Lancashire, Preston, Lancashire, UK from 11- to 16 September 2016.
5. Inaugural talk during rst BINA workshop on Instrumentation and Science with 3.6-m DOT
and 4.0-m ILM"T at ARIES from 15 to 18 November 2016.
6. Invited talk on Time-Resolved Photometric and Spectroscopic Analysis of the CP Stars" at
University of Florida from 24 to 27 June 2015.
7. Invited talk on Asteroseimology of CP Stars" at University of Texas at Arlington from 19 to
23 June 2015.
8. Invited talk on Asteroseismic Investigation of the Pulsating Stars" in a workshop on Advance
in Variable Stars" at A & M University, Houston, USA from 15 to 19 June 2015 .
9. Invited talk on Existing of Small and Medium Size Telescopes in India and Science with them"
from 19-22 October 2015 at SAO, Russia.
10. Invited talk on Asteroseismic Investigation of the Chemically Peculiar Stars" in ASI meeting
held at NCRA, Pune from 17 to 20 February 2015.
11. Invited talk on Photometric and Spectroscopic Analysis of CP Stars under Indo-Russian Col-
laboration" at SAO, Russia from 25 to 31 August, 2014.
12. Invited talk on Asteroseismology from ARIES" in Indo-UK seminar at ARIES from 26 to 28
March 2014.
13. Invited talk on Asteroseismology and Fast Photometer" in SAC meeting at ARIES from 05 to
07 October 2012.
14. Invited talk on Study of Variable Stars using Asteroseismic Technique" at Department of
Physics, M. B. Govt. P. G. College, Haldwani, Nainital, Uttarakhand from 04 to 05 November
2012.
15. Invited talk on Stellar atmosphere: clues based on spectroscopy" at ARIES on 02 March 2012
in ATSOA School-2012.
16. Invited talk on The Nainital-Cape Survey : A status report" at SAAO, South Africa on 19
May 2011.
17. Invited talk on Time resolved photoelectric, photometric and high-resolution spectroscopic
data analysis of a luminous Ap star HD 103498" at SAO, Russia from 27 August to 01 September
August, 2011.
18. Invited talk on The Nainital-Cape Survey: Contributions to Asteroseismology of CP stars" at
Moscow State University, Moscow in September 2010.
19. Invited talk on Search for p-mode Pulsations in late-type CP Stars" in the 7th annual meeting
of AOGS 2010 at Hyderabad International Convention Center, India from 5 to 9 July, 2010.
20. Invited talk on Variable stars and their seismology" in summer school held at ARIES, Nainital
in June 2009.
21. Invited talk on Nainital-Cape Survey : A status report" at ARIES, Nainital in Indo-South
African workshop from 30 October to 01 November 2008.
22. Invited talk on Introduction of Variable Stars" in connection with the International Year of
Astronomy 2009 at Nehru Memorial Museum and Library, New Delhi, from 3 to 6 October
2008.
23. Invited talk on Studies of Chemically Peculiar Stars" in 23rd Astronomical Society of India
Meeting held at ARIES, Nainital, in February 2005.
24. Invited talk on The Nainital-Cape Survey" during ARIES International Workshop on Aster-
oseisomology, at ARIES, Nainital from 4 to 6 December 2004.
25. Invited talk on Survey for Pulsational Variability in CP Stars" during UPSO-IUCAA Work-
shop on observational programme with 2-m class optical telescope held at ARIES, Nainital, in
October 1999.
26. Invited talk on The Nainital-Cape Survey" during Young Astronomers Meet held at ARIES,
Nainital, IUCAA Pune and ISAC,