Name of the Teacher: PROF. M. INDIRA DEVI

Bio – Data

Designation: Professor

Department: Physics

Date of joining the service: 15-03-1994

Date of birth: 21-02-1958

Mobile number: 9490753365

Details of Service rendered in the University:

Designation Service Total number of years Assistant Professor 15-03-1994 to 14-03-1999 5 years (Senior Teacher scale) Associate Professor 15-03-1999 to 14-03-2007 8 years Professor 15-03-2007 till date 8 years 6 months

Educational Details:

Examination Name of Year of Class Percentag Rank Subjects Passed the passing secured e of marks Universit y B. Sc. Andhra 1977 First class Stood Physics Universit with 84% Second in (Main), y distinction the Maths University &Chemistry M.Sc. Andhra 1979 First class Stood Physics with Universit with 79% First in Electronics y distinction the as University specialization Ph.D Andhra 1986 Awarded Best Thesis Prize for the Ionospheric Universit year 1986-87 studies y Did Ph. D. in Physics under the guidance of Prof. KVV Ramana and Prof. DN Madhusudhana Rao, Department of Physics, Andhra University

Area of Research: Ionospheric Physics

Guidance for M. Phil

Name of the Title of the dissertation Year of Year of student registration award

B. Swarna Latitudinal variation of fmin during IGY and 2005 2006 Kumar IQSY S. Ramesh Influence of IMF sector boundary crossing 2007 2008

on critical frequency of F2 layer K. Srinivasa Influence of IMF polarity reversal on 2007 2009 Yadav Southern Hemisphere mid-latitude ionosphere P. Sitarama Raju A study of VLF Phase variation on meteor 2007 2009 shower days T. Madhavi A study of VLF wave propagation 2008 2010 Latha characteristics in the earth-ionosphere waveguide adopting IRI electron density profile P. Peddi Naidu Day to Night change in reflection height 2011 2013 of VLF waves – A Theoretical Study

Number of Students presently working for Ph.D : Three

Research Publications: 17 (List of Publications is enclosed) Enclosure I National refereed Journals: 7 International refereed Journals: 10 Seminars / Conferences / Symposia attended: National Symposia / Workshops: 6

International Symposia / Workshops:2

Research work Done: enclosure - II

Membership of Professional Societies: Fellow of IETE M. Indira Devi

Enclosure - I

List of Publications:

1. Tropical upper tropospheric ozone enhancements due to potential vorticity intrusions over Indian sector, M. Sandhya, S. Sridharan, M. Indira Devi and H. Gadhavi, Journal of Atmospheric and Solar-Terrestrial Physics, 132 (2015) 147–152. 2. A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics, M. Sandhya, S. Sridharan, M. Indira Devi, K. Niranjan and A. Jayaraman, AnGeo Comm., 33, 599–608, 2015. 3. Anomalous behavior of Very Low Frequency signals during the earthquake events,T. Madhavi Latha, P. Peddi Naidu, D.N. Madhusudhana Rao and M. Indira Devi, Indian Journal of Radio & Space Physics, Vol 43, Dec 2014, pp 333 – 339, 2014. 4. A theoretical study of diurnal shift in reflection height of VLF waves using IRI electron density model, T Madhavi Latha, P Peddi Naidu, D N Madhusudhana Rao and M Indira Devi, Indian J Phys (November 2012) 86(11),947–950, 2012. 5. Anomalous phase variations of 16 kHz VLF signals on days of meteor showers observed at Visakhapatnam, India, M. Indira Devi, Ibrahim Khan and D.N. Madhusudhana Rao, Proc. A.P. Academi of Sciences, 13, 158-162, 2009.

6. A Study of VLF wave propagation characteristics in the earth-ionosphere waveguide, M. Indira Devi, I. Khan and D. N. Madhusudhana Rao, Earth Planets Space (Japan), 60, 737- 741, 2008.

7. A two-dimensional model study of latitudinal, seasonal and solar activity variation in transition height in the D-region, K. Durga Prasad, T.S.N. Somayaji, P. Appala Naidu, D.N. Madhusudhana Rao, T. Arunamani and M. Indira Devi, Indian Journal of Physics, 81 (5&6),521-530,2007.

8. A study of VLF Sudden Phase Anomalies in relation to solar radio noise (Microwave) Bursts, M. Indira Devi, Ibrahim Khan, N. Naga Raju and D.N. Madhusudhana Rao, Proc. A.P. Academi of Sciences,10 (2), 157-164, 2006

9. Earth –Ionosphere Wave guide model for Rugby-Visakhapatnam path consistent with VLF phase variation measurements, D.N. Madhusudhana Rao, M.Indira Devi, T. Arunamani and Ibrahim Khan, Indian Journal of Physics, 80 (2), 201-204, 2006. 10. A synoptic study of VLF sudden phase anomalies recorded at Visakhapatnam, Ibrahim Khan, M. Indira Devi, T. Arunamani, and D. N. Madhusudhana Rao, Earth Planets Space, 57, 1073–1081, 2005. 11. Radio wave absorption in a chapman ionization layer produced in a non-isothermal atmosphere, M. Indira Devi, DNM RAo, KVV Ramana , YVPK Raghava and KSRN Murty, Indian Journal of Physics, 74B, (1), 47-53 , 2000. 12. Validity of IRI electron density profiles in relation to vertical incidence absorption measurements, K. V. V. Ramana, K. S. R. N. Murthy, M. Indira Devi, Y. V. P. K. Raghava and DN Madhusudana Rao, Journal of Atmospheric and Terrestrial Physics, Vol. 58, No. 1 I, pp. 1195-1200, 1996. 13. Validity of IRI electron density profiles in relation to vertical incidence absorption Measurements, K. V. V. Ramana, K. S. R. N. Murthy, M. Indira Devi, Y. V. P. K. Raghava and D. N. Madhusudhana Rao, Adv. Space Res. Vol. 18. No. 6. pp. (6)307-(6)310, 1996. 14. Effect of NO transport on radio wave absorption, KVV Ramana, M. Indira Devi, DN Madhusudhana Rao, TSN Somayaji and T Arunamani, Indian Journal of Radio & Space Physics,Vol 22, 380-387, 1993.

15. Seasonal and solar cycle trends I planetary wave-induced perturbation in radio wave absorption, DNM Rao, M. Indira Devi, YVPK Raghava and KVV Ramana, Indian Journal of Radio & Space Physics, Vol 21, 234-236, 1992.

16. Absorption of radio waves from normal and sporadic E- layers, SC Sahu, M. Indira devi, TSN Somayaji and KVV Ramana, Indian Journal of Radio & Space Physics, Vol 13, pp189- 192, 1984.

17. Dependence of frequency power law exponent of ionospheric radio wave absorption on solar zenith angle, Rama chandrasekhar, p. victor,D Indira devi, DNM Rao, TSN Somayaji and KVV Ramana, Indian Journal of Radio & Space Physics,vVol 12, 43-46, 1983. Enclosure – II

Research work done:

After the award of Ph. D in October 1986, I published my Ph. D. work in the form of two research papers in Indian Journal of Radio and Space Physics in addition to the two research papers published during my Ph.D. program.

In January 1987, I joined IMAP Project on ‘Development of two-dimentional model of D and E regions’ under Prof. TSN Somayaji and worked till 31st of of December 1987.

In January 1988, I joined the UGC project on ‘Applications of group teory in physics and chemistry’ as research associate and worked till June 1990During this period, I was associated with many theoretical techniques relevant to calculation of coupling coefficients and field matrices.

In July I was awarded an Adhoc Research Associate by CSIR, New Delhi and published two research papers during the tenure.

In March 1994, I joined the Physics Department of Physics of Andhra University as Assistant Professor. In January 1995, I attended an International workshop on IRI models eld at New Delhi. In February 1996, I attended National Space Science Symposium held at Osmania University, Hyderabad. Later I was involved in the study of VLF phase variations observed at Visakapatnam and published seven papers in National and International Journals.

At present I have been working on VLF wave propagation characteristics and published four papers. Our group is also working on theoretical evaluation of VLF propagation parameters in earth-ionosphere wave-guide.