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..... Blackhole................................Rainbow! .................................................. Atom ........................................................Iron Spectrum

Dr. Sultana Nurun Nahar (APS Fellow)

Senior Research Scientist, Department of Astronomy , The Ohio State University, 140 W. 18th Ave, Columbus, OH 43210,
Email: nahar@astronomy.ohio-state.edu, Tel: 614-292-1888, Fax:614-292-2928

Welcome to my homepage!

Research [Radiative ( NORADAtomic-Data) & Collisional Atomic Data links are given down below]:

1. Radiative and collisional atomic processes in laboratory and astrophysical plasmas: (click a topic for brief outline)

Photoionization

Electron-ion recombination

Radiative transition probabilities

Electron-ion scattering
2. Theoretical Spectroscopy
3. Computational Nanospectroscopy for Biomedical Applications
4. Development of theories and programs for state-of-the art methods for atomic parameters, currently dielectronic satellite lines in astrophysical plasmas
5. A member of the international collaborations, the Opacity Project and the Iron Project , to calculate accurate atomic parameters for astrophysically abundant atoms and ions

These atomic processes are dominant in astrophysical plasmas. The results are applicable to both astrophysical and laboratory plasmas for spectral and diagnostic analysis.

Theoretical calculations employ state-of-the-art quantum mechanical techniques based on the ab initio R-matrix method in the close coupling approximation.

A significant part of the research is under the two international projects, the Opacity Project and the Iron Project, for calculating accurate atomic parameters for astrophysically abundant atoms and ions, and the interdisciplinary program on nanoscience.

Applications: Fe I - Fe III in 1Zwicky1

ATOMIC DATA: Radiative and Collisional Processes of Atoms & Ions :
The following NORADAtomic-Data link gives results, new and updated over TOPbase, on radiative atomic processes in Astrophysical & Laboratory Plasmas calculated by Nahar et al.:
Radiative Atomic Data: i) Energies, ii) Radiative Transitions/Photo-excitations, iii) Photoionization, iv) Electron-Ion Recombination

Nahar_OSU_Radiative_Atomic.Data (NORADAtomic-Data)

Collisional Data for Electron Impact Excitations are available at Anil K. Pradhan DATABASE

CV, Publications, Presentations, Research, Services:

SN Nahar: CV
SN Nahar: Publications
SN Nahar: Conference Presentations
SN Nahar: National/International Services
SN Nahar: Research Plans

<hr> <FONT size=4 color="#808000"> Total recombination rates for <A href="trrcfeions.html"> iron ions Fe I -Fe V </A>, <A href="trrccnoions.html"> CNO ions, C I - C VI, N I - N VII, O I - O VIII </A>,

Conference presentation links :

Solar Irradiation talk in SESSION 4 of: Intl Symp on Climate Change & Food Security in South Asia 2008

Nano-Spectroscopy talk : Intl Symp on Molecular Spectroscoy 2008

Workshop: "Atomic Physics in Astronomy", ITAMP-HARVARD & Iron Project Team (2006)

Iron Project: IP Meeting 2007 Presentations: Fe XV Transitions, Fe XVI Transitions

Group Research: News on Superhot atoms - Blackholes <Li> <A href="http://researchnews.osu.edu/archive/ionspace.htm">Group Research News on Superhot atoms - Blackholes </A>