BROWSE

Related Scientist

Soomi, Cha's photo.

Soomi, Cha
희귀 핵 연구단
more info

ITEM VIEW & DOWNLOAD

Estimation of the NiCu Cycle Strength and Its Impact on Type I X-Ray Bursts

Cited 0 time in webofscience Cited 0 time in scopus
6 Viewed 0 Downloaded
Title
Estimation of the NiCu Cycle Strength and Its Impact on Type I X-Ray Bursts
Author(s)
Kim, Chanhee; Chae, Kyungyuk; Soomi Cha; Kwak, Kyujin; Seong, Gwangeon; Smith, Michael
Publication Date
2022-04
Journal
ASTROPHYSICAL JOURNAL, v.929, no.1
Publisher
IOP Publishing Ltd
Abstract
Type I X-ray bursts (XRBs) are powered by thermonuclear burning on proton-rich unstable nuclides. The construction of burst models with accurate knowledge of nuclear physics is required to properly interpret burst observations. Numerous studies that have investigated the sensitivities of burst models to nuclear inputs have commonly extracted the strength of the NiCu cycle in the rp process, determined by the Cu-59(p,alpha)Ni-56 and Cu-59(p,gamma)Zn-60 thermonuclear reaction rates, as critical in the determination of reaction flow in the burst. In this study, the strength of the cycle at the XRB temperature range was estimated based on published experimental data. The nuclear properties of the compound nucleus Zn-60 were evaluated for the Cu-59(p,alpha)Ni-56 and Cu-59(p,gamma)Zn-60 reaction rate calculations. Monte Carlo rate calculations were conducted to include the large uncertainties of nuclear properties in the calculations. In the current work, a weak NiCu cycle is expected, whereas the rates adopted by the previous studies suggest a strong NiCu cycle. Model simulations were performed with the new rates to assess the impact on Type I XRBs. The results show that the estimated cycle strength does not strongly influence the model predictions of the burst light curve or synthesized abundances.
URI
https://pr.ibs.re.kr/handle/8788114/11964
DOI
10.3847/1538-4357/ac5f09
ISSN
0004-637X
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse