Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Zac Johnston"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:2148-2156
We measured the thermonuclear burning efficiency as a function of accretion rate for the Type I X-ray bursts of five low-mass X-ray binary systems. We chose sources with measured neutron star spins and a substantial population of bursts from a large
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e541be5ec34fb79f6890ed09d1db334
https://doi.org/10.1093/mnras/staa2858
https://doi.org/10.1093/mnras/staa2858
Autor:
Zac Johnston, Sheldon Wasik, Rachel Titus, MacKenzie L. Warren, Evan P. O’Connor, Remco Zegers, Sean M. Couch
Recent studies have highlighted the sensitivity of core-collapse supernovae (CCSNe) models to electron-capture (EC) rates on neutron-rich nuclei near the N=50 closed-shell region. In this work, we perform a large suite of one-dimensional CCSN simulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d44ee1a132546c9efdb98198683a218
Publikováno v:
The Astrophysical Journal Supplement Series. 263:30
Thermonuclear (type-I) bursts arise from unstable ignition of accumulated fuel on the surface of neutron stars in low-mass X-ray binaries. Measurements of burst properties in principle enable observers to infer the properties of the host neutron star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df091599f549d0926543bff07aa5d47f
https://doi.org/10.3847/1538-4365/ac98c9
https://doi.org/10.3847/1538-4365/ac98c9
We re-assess $^{65}$As(p,$\gamma$)$^{66}$Se reaction rates based on a set of proton thresholds of $^{66}$Se, $S_\mathrm{p}$($^{66}$Se), estimated from the experimental mirror nuclear masses, theoretical mirror displacement energies, and full $pf$-mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3754479f55e62681016434758e99ac1
http://arxiv.org/abs/2110.13676
http://arxiv.org/abs/2110.13676
Autor:
S. Ma, S. Hayakawa, M. S. Kwag, D. Kahl, N. T. Zhang, Shigeru Kubono, M. La Cognata, J. Su, Alexander Heger, H. Yamaguchi, Yaoyi Li, S. Romano, T. Liu, Y. H. Lam, X. Fang, L. H. Ru, K. Y. Chae, Michele Sferrazza, D. H. Kim, N. N. Duy, A. St. J. Murphy, J. Hu, S. Cherubini, A. Psaltis, Nguyen Kim Uyen, H. M. Shimizu, C. B. Hamill, S. M. Cha, Dh Kim, A. Tumino, L. Yang, E. Q. Liu, J. Liang, R. G. Pizzone, Zac Johnston, A. M. Jacobs, Song-Song Xu
Publikováno v:
Physical Review Letters. 127
We report the first (in)elastic scattering measurement of ^{25}Al+p with the capability to select and measure in a broad energy range the proton resonances in ^{26}Si contributing to the ^{22}Mg(α,p) reaction at type I x-ray burst energies. We measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0a15590e822b47cba2e27af5824379d
https://doi.org/10.1103/physrevlett.127.172701
https://doi.org/10.1103/physrevlett.127.172701
Autor:
Yi Hua Lam, Ning Lu, Alexander Heger, Adam Michael Jacobs, Nadezda A. Smirnova, Teresa Kurtukian Nieto, Zac Johnston, Shigeru Kubono
During the X-ray bursts of GS 1826$-$24, "clocked burster", the nuclear reaction flow that surges through the rapid-proton capture process path has to pass through the NiCu cycles before reaching the ZnGa cycles that moderate the further extent of hy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8e014b0af4bd7235c8d93dc689538e1
https://hal.archives-ouvertes.fr/hal-03318620
https://hal.archives-ouvertes.fr/hal-03318620
Autor:
Yi Hua Lam, Ning Lu, Alexander Heger, Adam Michael Jacobs, Nadezda A. Smirnova, Teresa Kurtukian Nieto, Zac Johnston, Shigeru Kubono
Publikováno v:
EPJ Web of Conferences. 260:11023
In Type-I X-ray bursts (XRBs), the rapid-proton capture (rp-) process passes through the NiCu and ZnGa cycles before reaching the region above Ge and Se isotopes that hydrogen burning actively powers the XRBs. The sensitivity study performed by Cybur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3340ec41a2dfbd7a95fa21bb9eaf93c7
https://doi.org/10.1051/epjconf/202226011023
https://doi.org/10.1051/epjconf/202226011023
Publikováno v:
EPJ Web of Conferences. 260:11028
Up to now, more than 62 of the 115 X-ray sources of low-mass-X-ray binaries have been identified as photospheric radius expansion (PRE) bursters [1]. Galloway and collaborators expect more PRE bursters in their near future analysis [2]. Although more
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adc37bbe535717639cdb7c8b13555b92
https://doi.org/10.1051/epjconf/202226011028
https://doi.org/10.1051/epjconf/202226011028
Type-I X-ray bursts are recurring thermonuclear explosions on the surface of accreting neutron stars. Matching observed bursts to computational models can help to constrain system properties, such as the neutron star mass and radius, crustal heating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d07bafd42febee39c84d3cca249a8343
Modelling of thermonuclear X-ray bursts on accreting neutron stars has to date focused on stable accretion rates. However, bursts are also observed during episodes of transient accretion. During such events, the accretion rate can evolve significantl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f7bf2acf8b5043832212c2b678cf946
http://arxiv.org/abs/1711.03970
http://arxiv.org/abs/1711.03970