Publications (10)
First direct observation of isomeric decay in neutron-rich odd-odd Ta
Y. X. Watanabe, P. M. Walker, Y. Hirayama +19
De-excitation rays associated with an isomeric state of Ta were investigated. The isomers were produced in multinucleon transfer reactions between a Xe beam an…
SVOM GRB 250314A at z 7.3: an exploding star in the era of reionization
B. Cordier, J. Y. Wei, N. R. Tanvir +103
Most long Gamma-ray bursts originate from a rare type of massive stellar explosion. Their afterglows, while rapidly fading, can be initially extremely luminous at optical/near-infr…
First investigation on the isomeric ratio in multinucleon transfer reactions: Entrance channel effects on the spin distribution
D. Kumar, T. Dickel, A. Zadvornaya +39
The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure the isomeric ratios (IRs) of Po (25/2) isomer and its (9/2…
Early results from the SVOM Observatory Science program
A. Coleiro, L. Tao, F. Cangemi +44
We present the organisation and early results from the Observatory Science program of the Space-based multi-band astronomical Variable Objects Monitor (SVOM), based on data collect…
The GRB joint scientific analysis pipeline of the ECLAIRs and GRM instruments on board SVOM
F. Piron, F. Daigne, T. Maiolino +35
The study of the prompt high-energy emission of Gamma-Ray Bursts (GRBs) with SVOM relies on the observations performed by ECLAIRs (4-150 keV) and the Gamma-Ray Monitor (GRM, 0.015-…
Direct observation of and decay from a high-spin long-lived isomer in Ta
J. L. Chen, H. Watanabe, P. M. Walker +20
Ta (, ) is located in the neutron-rich region where a prolate-to-oblate shape transition via triaxial softness is predicted to take place. A pr…
SVOM Science User Support at FSC
A. Claret, D. Turpin, C. Moreau +16
The SVOM mission, a Sino-French collaboration dedicated to Gamma-Ray Bursts (GRBs) and transient sources, began scientific operations in 2025. This paper describes the ground compu…
ECLAIRs: the SVOM high-energy transient trigger camera
O. Godet, J. -L. Atteia, S. Schanne +51
The core instrument of the SVOM Gamma-ray burst mission launched in June 2024 is the 4-150 keV 2-D coded mask camera ECLAIRs responsible for the autonomous trigger and localization…
XRF 241001A/SN 2024aiiq: A faint soft X-ray transient detected by SVOM with a broad-line type Ic supernova revealed by JWST
B. Schneider, M. Brunet, B. P. Gompertz +61
X-ray flashes (XRFs) are a type of gamma-ray burst (GRB) with prompt emission predominantly below 30 keV and have been poorly detected by previous missions. The advent of the SVOM…
Properties of 187Ta revealed through isomeric decay
P. M. Walker, Y. Hirayama, G. J. Lane +20
Mass-separated 187Ta in a high-spin isomeric state has been produced for the first time by multi-nucleon transfer reactions, employing an argon gas stopping cell and laser ionisati…