Tanmoy Samanta

Astrophysicist, Indian Institute of Astrophysics


Brief description about me

Hi, I am Tanmoy, presently staying at Bangalore, India. I am currently pursuing research at the Indian Institute of Astrophysics primarily in the area of Solar physics. I have completed my Masters Degree in Physics with specialization in Astrophysics from Visva-Bharati, Santiniketan. My research interest is the solar atmosphere studies using both space- and ground-based instruments. My work mainly includes observation of waves and reconnections in the solar atmosphere from the aspect of coronal heating problem.

Apart from these I spend an inordinate amount of time playing volleyball and watching TV series. I love to travel and am fascinated by food. And of course what I enjoy most is spending time with my friends and family.

Research interests: Solar physics: Multi-wavelength study of the solar atmosphere. Solar magnetohydrodynamics (MHD): waves, reconnections, observations and numerical simulations. Solar atmospheric seismology: density, temperature and magnetic field diagnostic of the solar atmosphere. Coronal heating: nanoflares and waves. Solar wind. Coupling of the solar atmosphere. Small-scale transients and fine-scale dynamics. Long-term study of the Sun and dynamo theory. CMEs and space weather.


I have gathered my work experience while handling various project

The atmosphere of the Sun which is extended over several million kilometers from its surface is called the solar corona. Corona is made of with hot gas called plasma which is confined in magnetic fields. Even if the temperature in the core of the Sun does reach 14 million degrees, it drops to a mere 5700 degrees at the surface. The temperature should be even lower farther away from the Sun, but the temperature of the corona is measured at more than a million degrees. What causes this rapid increase in temperature is still one of the big mysteries. Soon after the discovery, the theoreticians came up with reasonable mathematical models that tried to explain this apparently controversial feature. Popular theories which attempt to explain coronal heating can be broadly grouped into two categories. One possibility is that a large number of magnetic reconnection. The other theory argues that the heating is dominated by the damping of magneto-hydrodynamic (MHD) waves. It is now evident the solar atmosphere is highly structured and it is likely that various heating mechanisms operate in different atmospheric structures. Observational tests of a specific heating mechanism may be difficult because several mechanisms might operate at the same time. Theoretical estimates often predict very small spatial scales where the ultimate dissipation occurs, sometimes of the order of a few hundred meters, that even with current high spatial resolution satellite techniques cannot be resolved. Heating the solar plasma is a fundamental problem in solar physics, astrophysics and space weather forecast, which may also have industrial applications in laboratory devices. Although the details of the answer are not completely known, it does seem that the solution is near.

"It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong." - Richard P. Feynman

My Supervisor: Dr. Dipankar Banerjee

Published Work:

1.Quasi-Periodic Oscillation of a Coronal Bright Point

T. Samanta • D. Banerjee • Hui Tian

Samanta et al. 2015, ApJ, 806, 172

2.Propagating Disturbances in the Solar Corona and Spicular Connection

T. Samanta • V. Pant • D. Banerjee

Samanta et al. 2015, ApJL, 815, L16

3.Detection of High-Frequency Oscillations and Damping from Multi-slit Spectroscopic observations of the Corona

T. Samanta • J Singh • G. Sindhuja • D. Banerjee

Samanta et al. 2016, SoPh, 291, 155

4.The effects of transients on photospheric and chromospheric power distributions

T. Samanta • V. M. J. Henriques • D. Banerjee • S. Krishna Prasad • M. Mathioudakis • D. Jess • V. Pant

Samanta et al., 2016, ApJ, 828, 23

5.Propagating Disturbances along fan-like coronal loops in an active region

S. Mandal • T. Samanta • D. Banerjee • Krishna Prasad S. • L. Teriaca

Mandal et al., 2015, RAA, 15,1832

6.Kodaikanal Digitized White-light Data Archive (1921-2011)

S. Mandal • M. Hegde • T. Samanta • G. Hazra • D. Banerjee • Ravindra B.

Mandal et al., 2016, A&A, (arXiv:1608.04665)

7.Dynamics of subarcsecond bright dots above sunspot and their relation to penumbral micro-jets

T. Samanta • H. Tian • D. Banerjee • N. Schanche

Samanta et al. 2016, ApJL, (Under review)

Ongoing Work:

1.Spectral properties of transition region and coronal lines of an equatorial coronal hole

T. Samanta • D. Banerjee

Samanta et al. 2016


My formal education

"Poets say science takes away from the beauty of the stars - mere globs of gas atoms. I, too, can see the stars on a desert night, and feel them. But do I see less or more?" - Richard P. Feynman

Ph.D: 2012-present

Indian Institute of Astrophysics

Bangalore, India
Current working field: Solar atmosphere

M.Sc: 2009-2011


Santiniketan, India

Specialization: Astrophysics and Astronomy

B.Sc: 2006-2009

Netaji Mahavidlaya, Burdwan University

Arambagh, India

Subject: Physics(Hons), Chemistry & Mathematics.


My practical skills and knowledge

Well familiar with both Linux and Windows operating systems. Mainly using several packages of Interactive Data Language(IDL) and SolarSoftWare(SSW) for data analysis for ground based and satellite data. Also familiar with various plotting software like gnuplot and astronomical software like Ds9 etc.

"There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely with the work. The trouble with computers is that you 'play' with them!" - Richard P. Feynman

Key Research Expertise:

Solar atmopshere, plasma physics and MHD. Ground and space-based imaging and spectroscopic observations, data handling and data analysis. Space instrumentations. Historical solar data handling.


IDL, C, Latex, HTML


See my latest work

"The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another." - Richard P. Feynman

Latest work

Latest Movies (Click to Download)


• Oral presentation in the IRIS-6: The Chromosphere meeting, held at Stockholm, Sweden, during 20-23 June of 2016.
• Oral presentation in the IBUKS meeting held at KU Leuven, Belgium, during 13-19 June of 2016.
• Oral presentation in the Dynamic Sun I: MHD Waves and Confined Transients in the Magnetised Atmosphere held at the IIT-BHU, Varanasi, India, during 22-26 February of 2016.
• Oral presentation in the 3rd Asia-Pacific Solar Physics Meeting (APSPM:2015), held at the Seoul National University, Seoul, South Korea, during 3-6 November of 2015.
• Oral presentation in the Astronomical Society of India meeting 2016 (ASI:2016), held at Srinagar, Kashmir, India, during 10-13 May of 2016.
• Poster presentation in the Hinode-10 meeting, held at Nagoya University, Nagoya, Japan, during 5-9 September of 2016.
• Poster presentation in the Hinode-9 meeting, held at the Queens University, Belfast, Northern Ireland, UK, during 14-18 September of 2015.
• Poster presentation in the international conference on Coupling and Dynamics of the Solar Atmosphere, held at IUCAA, Pune, India, during 10-14 November of 2014.
• Poster presentation in the India-UK Seminar on Plasma Processes in the Solar and Space Plasma at Diverse Spatio-temporal Scales at ARIES, Nainital, India during 26-28 March of 2014.
• Participated in the India-UK Seminar on solar atmospheric wave studies meeting, held at IIA, Bangalore, India, during 21-23 January, 2013.
• Poster presentation in the Astronomical Society of India meeting 2013 (ASI:2013), held at Thiruvananthapuram, Kerala, India, during 20-22 February, 2013.
• Poster presentation in the Astronomical Society of India meeting 2014 (ASI:2014), held at IISER, Mohali, India, during 20-22 March, 2014.
• Poster presentation in the Astronomical Society of India meeting 2015 (ASI:2015), held at NCRA, Pune, India, during 17-20 February, 2015.
• Participated in the Irish National Astronomical Meeting (INAM:2014), held at Trinity College, Dublin, Ireland during August, 2014.
• Participated in the Indo-German Workshop on Solar Astronomy, held at IIA, Bangalore, India, during 17-18 November, 2014.
• Participated in the India-China workshop on astronomy and astrophysics, held at IIA, Bangalore, India, during 3-5 December, 2014.

Schools & Workshops

• Attended "IRIS-5 workshop", held at IUCAA, Pune, India, during 26-29 October of 2015.
• Attended DWIH Indo-German Winter School on "Solar and Stellar Astrophysics", held at TIFR, Mumbai, India, during 3-8 November of 2014.
• Attended the 'SCOSTEP/ISWI International School on Space Science' held at Sangli, Maharashtra, India during 7-17 November 2016.

Professional Visits

• Visited the National Solar Observatory, NM, USA during 19 February- 2 March, 2014 for observation with the DST using ROSA and IBIS instrument.
• Visited the Queens University, Belfast, Northern Ireland, UK during 6-30 August, 2014 for collaborative exchange work with a SST/CRISP observation.
• Visited the Queens University, Belfast, Northern Ireland, UK during 8-30 September, 2015 for collaborative exchange work and attending Hinode-9 meeting.
• Visited the Katholieke Universiteit Leuven (KU Leuven), Belgium during 13-17 June, 2016 for attending the IBUKS meeting and collaborative exchange work.