[seminar] Astro Journal Club on February 21st (Wednesday, 3 p.m.)

[Lana Ceraj]

Dear all,

Astro Journal Club this Wednesday starts at 3 p.m. (sharp) in the seminar room F-201 of the Physics Department.

Presenter: Lana Ceraj, mag. phys.

Title: Searching for Dual Active Galactic Nuclei

Authors: Khatun et al. (2018)

Abstract: 
Binary or dual active galactic nuclei (DAGN) are expected from galaxy formation theories. However, confirmed DAGN are rare and finding these systems has proved to be challenging. Recent systematic searches for DAGN using double-peaked emission lines have yielded several new detections. As have the studies of samples of merging galaxies. In this paper, we present an updated list of DAGN compiled from published data. We also present preliminary results from our ongoing Expanded Very Large Array (EVLA) radio study of eight double- peaked emission-line AGN (DPAGN). One of the sample galaxy shows an S-shaped radio jet. Using new and archival data, we have successfully fitted a precessing jet model to this radio source. We find that the jet precession could be due to a binary AGN with a super-massive black-hole (SMBH) separation of 0.02 pc or a single AGN with a tilted accretion disk. We have found that another sample galaxy, which is undergoing a merger, has two radio cores with a projected separation of 5.6 kpc. We discuss the preliminary results from our radio study. 

Link: https://arxiv.org/abs/1801.03451


If you’d like to present a paper from the field of astrophysics, please contact me via this email (lceraj at phy.hr).

You can find information about the upcoming AJC seminars and links to previous AJC presentations @ https://lanaceraj.wixsite.com/ajc-main 

See you all on Wednesday.

Cheers,
Lana
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