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相关论文: First direct measurement of $^{22}$Mg($\alpha$,p)$…

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The neutron star (NS) low-mass X-ray binary (LMXB) the Rapid Burster (RB; MXB 1730-335) uniquely shows both Type-I and Type-II X-ray bursts. The origin of the latter is ill-understood but has been linked to magnetospheric gating of the…

高能天体物理现象 · 物理学 2017-11-29 J. van den Eijnden , T. Bagnoli , N. Degenaar , A. M. Lohfink , M. L. Parker , J. J. M. in 't Zand , A. C. Fabian

The observed durations of prompt gamma-ray emission from gamma-ray bursts (GRBs) are often used to infer the progenitors and energetics of the sources. Inaccurate duration measurements will have a significant impact on constraining the…

高能天体物理现象 · 物理学 2022-03-15 M. Moss , A. Lien , S. Guiriec , S. B. Cenko , T. Sakamoto

We analyze 24 type I X-ray bursts from GS 1826-24 observed by the Rossi X-ray Timing Explorer between 1997 November and 2002 July. The bursts observed between 1997-98 were consistent with a stable recurrence time of 5.74 +/- 0.13 hr. The…

天体物理学 · 物理学 2009-11-10 D. K. Galloway , A. Cumming , E. Kuulkers , L. Bildsten , D. Chakrabarty , R. E. Rothschild

A polarized gamma ray emission spread over a sufficiently wide energy band from a strongly magnetized astrophysical object like gamma ray bursts (GRBs) offers an opportunity to test the hypothesis of axion like particles (ALPs). Based on…

高能物理 - 唯象学 · 物理学 2008-09-04 Andre Rubbia , Alexander Sakharov

While Gamma Ray Bursts (GRBs) have the potential to shed light on the astrophysics of jets, compact objects, and cosmology, a major set back in their use as probes of these phenomena stems from our incomplete knowledge surrounding their…

高能天体物理现象 · 物理学 2024-08-12 Tyler Parsotan , Davide Lazzati

The current status of the reaction rate of $^{22}$Ne($\alpha$,n)$^{25}$Mg is summarized. Among the latest new results, probably the most relevant is the conclusion that the E$_x$=11.15 MeV state in $^{26}$Mg has a non-natural parity, so it…

核实验 · 物理学 2008-10-08 Claudio Ugalde

Atomic nuclei and dense nucleonic matter in neutron stars exhibit short-range correlations (SRCs), where nucleons form temporally correlated pairs in proximity beyond mean-field approximation. It is essential to make precision measurement…

We study the effect of uncertainties in the proton-capture reaction rates of the NeNa and MgAl chains on nucleosynthesis due to the operation of hot bottom burning (HBB) in intermediate-mass asymptotic giant branch (AGB) stars. HBB…

天体物理学 · 物理学 2008-11-26 Robert Izzard , Maria Lugaro , Christian Iliadis , Amanda Karakas

UW CrB (MS1603+2600) is a peculiar short period X-ray binary that exhibits extraordinary optical behaviour. The optical light curve shape of the system changes drastically from night to night, without any changes in overall brightness. Here…

天体物理学 · 物理学 2009-11-10 P. Hakala , G. Ramsay , P. Muhli , P. Charles , D. Hannikainen , K. Mukai , O. Vilhu

About one month after the revolutionary discovery of the Gamma Ray Burst (GRB) GRB 221009A and intense theoretical efforts to explain its detection, time seems to us ripe to make an assessment of the axion-like particle (ALP) based…

高能天体物理现象 · 物理学 2022-11-16 Giorgio Galanti , Marco Roncadelli , Fabrizio Tavecchio

Type I X-ray bursts are rapidly brightening phenomena triggered by thermonuclear burning on accreting layer of a neutron star (NS). The light curves represent the physical properties of NSs and the nuclear reactions on the proton-rich…

高能天体物理现象 · 物理学 2023-06-28 Guoqing Zhen , Guoliang Lv , Helei Liu , Akira Dohi , Nobuya Nishimura , Chunhua Zhu , Liyu Song , Weiyang Wang , Renxin Xu

Transient Low-Mass X-ray Binaries (LMXBs) are usually first detected by all-sky X-ray monitors when they enter new outbursts, typically at X-ray luminosities above $\sim$10$^{36}$ erg/s. Observations of these sources during the early rise…

We present axisymmetric hydrodynamical simulations of the long-term accretion of a rotating GRB progenitor star, a "collapsar," onto the central compact object. The simulations were carried out with the adaptive mesh refinement code FLASH…

高能天体物理现象 · 物理学 2014-11-20 Christopher C. Lindner , Milos Milosavljevic , Sean M. Couch , Pawan Kumar

This paper presents new X-ray observations of Mrk 231, an active galaxy of particular interest due to its large infrared luminosity and the presence of several blueshifted broad absorption line (BAL) systems, a phenomenon observed in a…

天体物理学 · 物理学 2009-10-30 T. J. Turner

We examine the published light curves (LCs) of 117 X-ray binary pulsars, focusing on the dependence of their light curves on the observed energy bands. It is found that the energy dependence of the LCs appears only when the X-ray luminosity…

天体物理学 · 物理学 2015-05-13 S. Karino

We have performed the first direct measurement of the 83Rb(p,g) radiative capture reaction cross section in inverse kinematics using a radioactive beam of 83Rb at incident energies of 2.4 and 2.7 A MeV. The measured cross section at an…

The $^{22}$Ne($\alpha$,n)$^{25}$Mg reaction is the dominant neutron source for the slow neutron capture process ($s$-process) in massive stars and contributes, together with the $^{13}$C($\alpha$,n)$^{16}$O, to the production of neutrons…

Type I X-ray bursts are thermonuclear explosions on the neutron star (NS) surface caused by mass accretion from a companion star. Observations of X-ray bursts provide valuable information on X-ray binary systems, e.g., binary parameters,…

高能天体物理现象 · 物理学 2022-01-06 A. Dohi , N. Nishimura , M. Hashimoto , Y. Matsuo , T. Noda , S. Nagataki

Accurate nuclear reaction rates for 26P(p,{\gamma})27S are pivotal for a comprehensive understanding of rp-process nucleosynthesis path in the region of proton-rich sulfur and phosphorus isotopes. However, large uncertainties still exist in…

核理论 · 物理学 2023-06-28 S. Q. Hou , J. B. Liu , T. C. L. Trueman , J. G. Li , M. Pignatari , C. Bertulani , X. X. Xu

We discuss the importance of Fe$^{23+}$ in determining the line intensities of the Fe XXV K$\alpha$ complex in an optically thick cloud, and investigate the prediction of Liedahl (2005) on Resonance Auger Destruction (RAD) with CLOUDY.…

高能天体物理现象 · 物理学 2020-09-30 P. Chakraborty , G. J. Ferland , M. Chatzikos , F. Guzmán , Y. Su