Summer students' reports 1

by Gerard Marcet (UAB Student), Iker Vea Lladser (UB Student), Waddia Summan (PIEAS student)

Wednesday 21 Sep 2022, 13:00 → 14:00 Europe/Madrid

IFAE Seminar Room (IFAE)

The IFAE Summer Fellowship Programme offers undergraduate students the possibility of spending the summer as a physics researcher. The program has been running for 7 years now.

In this seminar, 3 students will report on their work done in this one-month stay.

1.  Truth Analysis of Vector-like leptons simulations in ATLAS

Iker Vea Lladser, UB Student

Search for Vector-like leptons (VLL) in ATLAS. While trying to be fully consistent with a previous analysis made by the CMS experiment and using the VLL 4321 model we have produced and analysed simulation samples for different production modes and masses in order to search for pairs of one charged and one neutral Vector-like lepton.

 

2.Optimal binning for gamma-ray light curves

Gerard Marcet, UAB Student

Bin size selection of time histograms plays a crucial role in the analysis of lightcurves. Expanding on Shimazaki and Shinomoto’s work, a method to evaluate the goodness of an arbitrary bin selection with respect to an unknown probability density function is devised. This new approach allows finding the optimal value of parameters used in adaptive binning

 

3. Hunting Active Black Holes in Red Compact Galaxies

Waddia Summan, Pakistan Institute for Engineering and Applied Sciences Student (remote)

Red nuggets are common at high redshift but very rare in the nearby Universe. They are galaxies that have survived billions of years of cosmic evolution without a scratch -- resembling a time capsule from the Early Universe. Therefore, red nuggets give us a golden opportunity to study how elliptical galaxies age over time as well as to constrain how galaxies and their central supermassive black holes co-evolve over aeons in isolation. Recently, 77 red nuggets among 86 ultra-compact massive galaxies were identified at intermediate redshift. This project aims to look for signs of presence of active galactic nuclei (AGNs) in these galaxies. We analysed them in multiwavelength regimes and studied their X-ray and mid-infrared properties as well as spectral properties. Finally, we found a first unique sample of six strong AGN candidates, three of them being red nuggets.

Pizza_seminar_Gerard.pdf PptXerradaDimecres21.pdf