University of Connecticut

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Astronomy Seminar

Wednesday, March 17, 2021
11:00am – 12:00pm

Storrs Campus

Dr. Mary Loli Martinez Aldama, Center for Theoretical Physics, Polish Academy of Sciences

Black Hole Reverberation Mapping and its Application in Cosmology

One of the most important results in reverberation mapping studies is the Radius-Luminosity (RL) relation, which is widely used to estimate the black hole mass in Active Galactic Nuclei (AGN). However, the sources with the highest accretion rates, known as Super-Eddington sources, have led to a much larger scatter, clearly associated with the accretion rate. In order to recover the standard results, we have proposed some corrections based on observational parameters, which in turn are driven by the Eddington ratio. We have widely explored the inclusion of these parameters in the UV RL relation. We have decreased the scatter, however, new measurements are needed to define a standard UV RL relation such as in the optical case. Since the RL relation offers the possibility to determine the distance, we have used the reverberation mapping results to estimate the cosmological parameters Ωm and ΩΛ. Our results are consistent with the ΛCDM model within 1σ confidence level.


Prof. J. Trump

Physics Department (primary), College of Liberal Arts and Sciences, UConn Master Calendar

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