Specialization

Astronomy and Astrophysics, Gravitational Dynamics

Email

mamta.gulati@thapar.edu

Assistant Professor

Email-id: mamta.gulati@thapar.edu

Biography

Dr. Mamta Gulati is currently working as an Assistant Professor at Department of Mathematics, Thapar Institute of Engineering & Technology, Patiala. She joined the dapartment in July 2017. She completed her doctorate from Indian Institute of Science (IISc), Bangalore in 2014 and then joined Indian Institute of Science Education and Research Mohali (IISER Mohali) as a Post Doctoral Fellow for 2-years. Thereafter she was working as a Research Assosiate at IISER Mohali under SERB-DST project (NPDF Fellow). Her research interests are in Astronomy and Astrophysics, Gravitaional Dynamics. She is also the project coordinator of Thapar Satellite Project (ThaparSat), and actively working on measurement of absorption signature of the greenhouse gases. She is also actively involved in teaching at various levels at the Thapar Institute of Engineering & Technology. She is working with the citizen science project RAD@Home funded by CSIR as a professional astronomer.

Education

• Ph.D., Indain Institute of Science Bangalore, India, and Raman Research Institute, Bangalore, India. Subject: Astronomy and Astrophysics
• M. Sc. Mathematics, Panjab University, Chandigarh, India
• B. Sc (Mathematics Honours), Govt. College for Women, Ludhiana, Punjab, India

Experience: More than 8 years of Post Ph.d. experience

• Teaching: Teaching Faculty at Thapar Institute of Engineering and Technology from July 2017 to present.
• Research: Research Associate at IISER Mohali from July 2014 to June 2017 (Institute fellow for two years and DST-SERB NPDF fellow for one year).

Research Projects:

• Title: A Study of different aspects of galaxy evolution.
• Period: July 2016 to July 2017.
• Summary: Disc galaxies are quiet commonly seen astronomical objects in universe. Evolution of galaxies is known to be affected by various processes. In this work we studied the long term effects on the evolution of disc galaxies when it passes through the intergalactic medium (IGM), in particular the effect on the gas component of the disc. Ram pressure stripping (RPS) of gas from the disc as it passes through the IGM, is known to be the dominant process to remove gas from the discs. However a systematic study of such system was lacking. We propose a model for RPS on galaxy evolution and address the questions like: how gas is stripped as it passes through the intergalactic medium, what are its effects on the evolution of star formation rate and the effect of RPS as a function of galaxy mass.
• Funding Agency/Amount: Science and Engineering Research Board (DST)/INR 19.2 Lac.

Description of Research Interests:

• Her research interests mainly lies in Gravitational dynamics. Most of her work is based on the study of slow modes for various astrophysically relevant discs. These modes are suspected to be the reason behind various structures observed in these discs, which inturn are correlated to the global properties of discs. Other part of her research work involves the study of evolution of gas content in the galaxies as it moves through the cluster medium. Under ThaparSat project she is working on designing the payload which is targetted to the measurement of greenhouse gases like carbon dioxide, methane etc along with the the develoment of image processing algorithms for analysis of data received.

Publications:

Journals

1. Study of dependence of ram pressure stripping on the orbital parameters of the galaxies, Ankit Singh, Shreya Davessar, Mamta Gulati, Jasjeet Singh Bagla, Meenu Prajapati; Monthly notices of Royal Astronomical Society, 530, 699-709, 2024.
2. Three-dimensional stellar orbits due to off-centered dark matter halo at the center of the disc galaxies, Meenu Prajapati, Mamta Gulati; New Astronomy, 111, 102246, 2024.
3. Enhanced m=1 WKB instabilities in nearly Keplerian stellar discs due to the presence of gas, Meenu Prajapati, Mamta Gulati, Astrophysics and Space Science, 367, 56, 2022.
4. RAD@ home citizen science discovery of an active galactic nucleus spewing a large unipolar radio bubble on to its merging companion galaxy, Ananda Hota, Pratik Dabhade, Sravani Vaddi, Chiranjib Konar, Sabyasachi Pal, Mamta Gulati, CS Stalin, Ck Avinash, Avinash Kumar, Megha Rajoria, Arundhati Purohit, Monthly Notices of the Royal Astronomical Society: Letters, 517, L86-L91, 2022 (arXiv:2210.06100).
5. RAM pressure stripping: an analytical approach, Ankit Singh, Mamta Gulati, Jasjeet Singh Bagla; Mon. Not. R. Astron. Soc., 489, 5582-5593 (2019) (arXiv:1909.02744).
6. Modal analysis of gravitational instabilities in nearly Keplerian, counter-rotating collisionless discs, Mamta Gulati, Tarun Deep Saini; Mon. Not. R. Astron. Soc., 465, 2505-2516 (2017) (arXiv:1602.07169).
7. A modified WKB formulation for linear eigenmodes of a collisionless self-gravitating disc in the epicyclic approximation, Mamta Gulati, Tarun Deep Saini; Mon. Not. R. Astron. Soc., 460, 1019-1032 (2016) (arXiv:1601.04148).
8. Unstable m = 1 modes of counter-rotating Keplerian discs, Mamta Gulati, Tarun Deep Saini, S. Sridhar; Mon.Not. R. Astron. Soc. 424, 348-360 (2012) (arXiv:1203.2239).
9. Slow pressure modes in thin accretion discs, Tarun Deep Saini, Mamta Gulati, S. Sridhar; Mon. Not. R. Astron.Soc. 400, 2090-2097 (2009) (arXiv:0901.4229).

Membership of Professional Institutions, Associations, Societies

• Visiting Associate at Inter-University Center for Astronomy and Astrophysics, Pune, India.
• Life member of Astronomical Society of India.
• Core member, Public Outreach and Education Committee, Astronomical Society of India.
• Professional Astronomer at RAD@Home India.

Achievement, Awards and Recognitions

• DST National Postdoctroral Fellowship, Hosted at Indian Institute of Science Education and Research, Mohali, Punjab (July, 2016-July, 2017).
• Post Doctoral Fellowship (Institute supported) at Indian Institute of Science Education and Research, Mohali, Punjab (July, 2014-June, 2016).
• Received Junior Research Fellowship (August,2007-July, 2009) and Senior Research Fellowship (July, 2009-April, 2014) to pursue graduate studies at Indian Institute of Science and Raman Research Institute.
• Received National Board of Higher Mathematics (NBHM) scholarship for two years (2005-2007) during M.Sc.
• Qualified GATE in March, 2007, (All India Rank-103).

Message to Students & Community

• Always Believe in 3-D’s: Direction, Dedication and Discipline .