Advertisement for the post of Junior Research Fellow (JRF) in DST-SERB sponsored research project (EMR/2016/001723)

Aryabhatta Research Institute of Observational Sciences (ARIES) Manora Peak Nainital-263002 Uttrakhand (India)

                       Dated: 24-11-2017

Applications are invited for the position of Junior Research Fellow (JRF) for research work in DST-SERB sponsored project (EMR/2016/001723) as per details:

Project Title: Devasthal optical telescope - AGN Reverberation Monitoring (DOT-ARM): Probing AGN black-hole masses and broad line regions

No. of posts: One

Minimum Qualifications: Post Graduate Degree in Physics  or Graduate Degree in Computer science; with >55% and preferably with NET/GATE or Post Graduate Degree in Computer science.

Desirable & Job description: Computer programing skills in c++,c, pythons mysql  and php. The major task will be to develop softwares for data analysis and automatisation of telescope operations based on remote control systems (cf.  c++ based openware of ) .

Age Limit: 28 years (maximum);  Relaxation in the upper age limit/educational qualifications is admissible in case of SC/ST/OBC as per DST, Government of India rules.

Project tenure: 3 years; annually extendable based on satisfactory performances.

Fellowship: 25,000/- pm + HRA admissible as per DST rules (if campus hostel accommodation will not be available).

Application Format: Those interested in the project are requested to send their updated CV with the following application format:- (Personal particulars, Details of academic record (12th onwards), Research/Professional Experience)

Mode of Application: Applications including CV and correspondence address should reach the

undersigned by email to, cc to: on or before 31st December,  2017, with subject “Application for JRF in DST-SERB sponsored project EMR/2016/001723”.

Interview: The shortlisted candidates will be called for interview most likely on 8th January 2018 at Manora Peak Nainital; though the exact  date and time of interview will be intimated to the short-listed candidates by email. The update about the processing of application  will also be available in our online portal at: .   No TA/DA will be paid for attending the interview.

Note: The above position is available immediately. The position is purely temporary and co-terminus with the aforementioned project. The services of the selected candidate will be governed by the rules/regulations of ARIES, but he/she will not be an employee of the Institute and shall have no claim for any benefit whatsoever on that account.

Contact: Dr. Hum Chand & Dr. Amitesh Omar 

For PDF file of poster to display in your department please click HERE

Project Summary

This proposal originates with the recent two new ARIES telescopes i.e 1.3m and 3.6m telescope at Devasthal, to achieve a challenging themes of Active galactic Nuclei (AGN) reverberation mapping (RM) which still is in an experimental and developmental state. At present RM is the only tool to probe the structure and kinematics of the broad-line regions (BLRs), as these regions generally project to angular sizes of only tens of micro-arcseconds or less, much too small to be resolved directly by any current or near-future technology. However RM experiments are time- consuming exercises that require a large amount of telescope time and coordinated effort, affordable only with small telescope (like ARIES 1.3m) where a large block of time can be given for single project. Traditionally RM with line spectroscopy will not be possible with small telescopes, but we plan to catch the flux of broad emission line on the narrow-band filter tuned to redshifted position of these lines; also known as photometeric reverberation mapping (PRM). In traditional RM experiment till now only bright sources selected by success oriented selection, were observed in serial mode covering only few dozen of AGNs only. In contrast our experiment will be done on a large sample of a few hundred sources in systematic ways by covering large representative parameter space of AGNs. Here we focus on the PRM experiment for low-luminosity range AGN (Log[L] less that 43 erg/s), which is an un-explored regime in famous AGN radius-luminosity relation, a key relation used to estimate AGN black hole (BH) mass in the literature. The PRM experiment will ensure the cadence to be 1-2 days as low luminosity AGN BLR size could be only a few days, which will be out of the scope of the traditional/survey based RM experiment having cadence of weeks or so. As a result one set of our campaign of PRM duration will be only 1-2 weeks, and this will allow us to cover a large sample of many hundred sources in a reasonable observing time block. Our immediate science goal here will be (i) does the R-L relation seen at high luminosity AGN also extend to the low luminosity regime (ii) Use the PRM time delays to get the BH-mass, and calibrate the the so called single epoch BH-mass measurement method using this representative sample of AGN. Also to notice that the BHs in this mass regime provide unique tests for the relationship between BHs and galaxies, since their late-type galaxy hosts do not necessarily contain classical bulges. (iii) Use this huge data-set to model the BLR structure and kinematics, which later can be extended to velocity resolved RM to understand BLR dynamics for many interesting sources. The programs will be unique in the country, by making efficient use of the ARIES 1.3m meter facility for large PRM observations and 3.6m for the single epoch spectroscopy observations, with substantial science output as well as in term of data resource contribution to the community.