A5102988344- Gamma-ray bursts and supernovae
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Pulsars and Gravitational Waves Research
- CCD and CMOS Imaging Sensors
- Astrophysical Phenomena and Observations
- Crystallography and Radiation Phenomena
Queen's University Belfast
2023-2024
Abstract Fast X-ray Transients (FXTs) are extragalactic bursts of soft X-rays first identified ≳10 yr ago. Since then, nearly 40 events have been discovered, although almost all these recovered from archival Chandra and XMM-Newton data. To date, optical sky surveys follow-up searches not revealed any multiwavelength counterparts. The Einstein Probe, launched in 2024 January, has started surveying the regime (0.5–4 keV) will rapidly increase sample FXTs discovered real time. Here we report...
Abstract We present multiwavelength photometry and spectroscopy of SN 2022jli, an unprecedented Type Ic supernova discovered in the galaxy NGC 157 at a distance ≈ 23 Mpc. The multiband light curves reveal many remarkable characteristics. Peaking magnitude g = 15.11 ± 0.02, high-cadence reveals periodic undulations 12.5 0.2 days superimposed on 200-day decline. This periodicity is observed from nine separate filter instrument configurations with peak-to-peak amplitudes ≃ 0.1 mag. first time...
Abstract We present a convolutional neural network (CNN) for use in the real–bogus classification of transient detections made by Asteroid Terrestrial-impact Last Alert System (ATLAS) and subsequent efforts to improve performance since initial development. In detection surveys, number alerts outstrips capacity human scanning, necessitating machine learning aids reduce false positives presented annotators. take sample recently annotated data from each three operating ATLAS telescope with...
Fast X-ray Transients (FXTs) are extragalactic bursts of soft X-rays first identified >10 years ago. Since then, nearly 40 events have been discovered, although almost all these recovered from archival Chandra and XMM-Newton data. To date, optical sky surveys follow-up searches not revealed any multi-wavelength counterparts. The Einstein Probe, launched in January 2024, has started surveying the regime (0.5-4 keV) will rapidly increase sample FXTs discovered real time. Here, we report...
We present multi-wavelength photometry and spectroscopy of SN 2022jli, an unprecedented Type Ic supernova discovered in the galaxy NGC 157 at a distance $\approx$ 23 Mpc. The multi-band light curves reveal many remarkable characteristics. Peaking magnitude $g=15.11\pm0.02$, high-cadence reveals 12.5$\pm0.2\ $day periodic undulations superimposed on 200 day decline. This periodicity is observed from nine separate filter instrument configurations with peak-to-peak amplitudes $\simeq$ 0.1 mag....