Description
Chair: M. Serino (AGU)
-
Jean-Luc Atteia (IRAP - Toulouse)12/12/2024, 13:3030m
This talk will start with a presentation of the SVOM mission and the homonymous satellite, which was successfully launched on June 22nd 2024, with a special focus on the ECLAIRs hard X-ray imager. Then, the operations performed during the commissioning and early science phases will be described, along with the tuning of some crucial parameters. This will lead to the description of ECLAIRs...
Go to contribution page -
Hiroki Hiramatsu (Aoyama Gakuin University)12/12/2024, 14:0020m
The Monitor of All-sky X-ray Image (MAXI) has been observing the X-ray sky and has detected 164 GRBs since its launch in 2009. MAXI is suitable for detecting transient events such as GRB due to its unique scanning observation. Recently, Low luminosity GRBs (LL GRBs) have become a key in multi-messenger astronomy. However, only a few of these events have been observed by all detectors so far....
Go to contribution page -
Heyang Liu (National Astronomical Observatories, Chinese Academy of Sciences)12/12/2024, 14:2020m
Lobster Eye Imager for Astronomy (LEIA) is a pathfinder of the wide-field X-ray telescope of the Einstein Probe (EP) mission. The piggyback imager, launched in 2022 July, has a mostly unvignetted field of view of 18°. 6 × 18°.6. Its spatial resolution is in the range of 4–7 arcmin in FWHM and the focal spot effective area is 2–3 square centimeter, both showing only mild fluctuations across the...
Go to contribution page -
Hui Sun (National Astronomical Observatories, Chinese Academy of Sciences)12/12/2024, 14:4015m
The central engine that powers gamma-ray bursts (GRBs) is still not identified. Besides hyper- accreting black holes, rapidly spinning and highly magnetized neutron stars, known as millisec- ond magnetars, have been suggested to power both long and short GRBs. Indirect indications of a magnetar engine in these merger sources have been observed in the form of plateau fea- tures present in the...
Go to contribution page -
Qianqing Yin (Institute of High Energy Physics, CAS)12/12/2024, 14:5515m
The Chasing All Transients Constellation Hunters (CATCH) space mission, proposed in 2019, is an AI-controlled astronomical constellation dedicated to monitoring X-ray emissions from tran-sients across the entire sky. The mission aims to enhance our understanding of the extreme uni-verse through X-ray imaging, spectral, timing, and polarization measurements. Plans are also in place to introduce...
Go to contribution page -
Christopher Irwin (RESCEU, University of Tokyo)poster
The first detectable light of a supernova explosion is the shock breakout emission, which is produced as the supernova shock wave breaches the star's surface and which acts as a powerful diagnostic for the pre-explosion state of the progenitor system. I will discuss a novel way of categorizing the possible spectra observed immediately after breakout, and the recent advances in shock breakout...
Go to contribution page -
Motoko Serino (Aoyama Gakuin Univ.)poster
Short X-ray transients are observed by various X-ray missions. Origins of these transients are both galactic (X-ray bursts, stellar flares, soft gamma-ray repeaters, etc.) and extra-galactic (Gamma-ray bursts, tidal disruption events, AGNs, etc.). Among them MAXI observed short soft transients which were not observed by other instruments including X-ray follow-up observations. We summarize the...
Go to contribution page -
Ryuji Kondo (Kanazawa univ.)poster
Wide-field soft X-ray surveys are important for future gamma-ray burst observations. The HiZ-GUNDAM satellite will use lobster-eye optics and pnCCDs to observe soft X-ray transients such as gamma-ray bursts. In this study, the radiation tolerance of a small pnCCD with a pixel size of 75 µm and a depletion thickness of 450 µm was evaluated. In this test, radiation damage due to orbital total...
Go to contribution page -
Xinpeng Xu (NAOC)poster
For X-ray spectra with low counts, traditional statistics such as 𝜒2 statistic and Poisson (C) statistic cannot well enough evaluate the goodness-of-fit during model fitting, because the binning process is usually arbitrary and would result in the loss of channel information. The maximum-likelihood estimation method is an ideal alternative method that does not require any binning procedures....
Go to contribution page