Abstract Details

Name: KRISHAN CHAND
Affiliation: ARIES
Conference ID: ASI2020_331
Title : Photometric Reverberation Mapping of Low Luminosity AGNs
Authors and Co-Authors : Krishan Chand, Vivek Jha, Hum Chand, Amitesh Omar
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : Spectro-photometric reverberation mapping (RM) is a useful tool to find the black-hole mass of active galactic Nuclei (AGN). Being it resource expensive, as an alternative, we have explored the use of photometric reverberation mapping (PRM) where the flux of emission line is observed in the narrow-band filter instead of taking its spectra. In our PRM experiment, we have monitored two sources, MCG+09-16-013 and J104842.45+413302.3 using ARIES 1.3m telescope in V, B broad-band for continuum flux and SII, 702nm narrow-band filters for H-alpha flux of MCG+09-16-013 and J104842.45+413302.3 respectively. For source MCG+09-16-013, our measured PRM based broad-line region time lag is found to be 3.0±0.22 days resulting in its black hole mass of (2.87±0.45)×10^7M⊙. This is found to be consistent with the conventional spectroscopic RM. For source J104842.45+413302.3 we could not estimate time lag due to lack of variability through the observational campaign and hence did not proceed further out. But this experiment demonstrates the feasibility of using ARIES 1.3 m for PRM experiment and hence can be extended to a larger sample of low-luminosity AGNs. In this regards, we have procured 8 narrow-band filters aiming to validate the conventional luminosity-radius relation in the unexplored low luminosity regime and currently observation is being done for well-selected PRM sources using ARIES 1.3m telescope in broad-band filters and newly procured narrow-band filters.