Zobrazeno 1 - 10
of 5 255
pro vyhledávání: '"Ong, W. -J."'
Autor:
Fougères, C., Avila, M. L., Jayatissa, H., Santiago-Gonzalez, D., Brandenburg, K., Meisel, Z., Mohr, P., Montes, F., Műller-Gatermann, C., Neto, D., Ong, W. -J., Pereira, J., Rehm, K. E., Tang, T. L., Tolstukhin, I. A., Varriano, L., Wilson, G., Wu, J.
About half of the heavy elements beyond iron are known to be produced by the rapid neutron capture process, known as r-process. However, the astrophysical site producing the r-process is still uncertain. Chemical abundances observed in several cosmic
Externí odkaz:
http://arxiv.org/abs/2402.01534
Autor:
Jain, R., Brown, E. F., Schatz, H., Afanasjev, A. V., Beard, M., Gasques, L. R., Gupta, S. S., Hitt, G. W., Hix, W. R., Lau, R., Moller, P., Ong, W. J., Wiescher, M., Xu, Y.
Publikováno v:
ApJ 955 51 (2023)
The observation of X-rays during quiescence from transiently accreting neutron stars provides unique clues about the nature of dense matter. This, however, requires extensive modeling of the crusts and matching the results to observations. The pycnon
Externí odkaz:
http://arxiv.org/abs/2306.12451
Autor:
Yandow, I. T., Abdullah-Smoot, A., Bollen, G., Hamaker, A., Nicoloff, C. R., Puentes, D., Redshaw, M., Gulyuz, K., Meisel, Z., Ong, W. -J., Ringle, R., Sandler, R., Schwarz, S., Sumithrarachchi, C. S., Valverde, A. A.
Light curves are the primary observable of type-I x-ray bursts. Computational x-ray burst models must match simulations to observed light curves. Most of the error in simulated curves comes from uncertainties in $rp$ process reaction rates, which can
Externí odkaz:
http://arxiv.org/abs/2306.10163
Autor:
Browne, J., Chipps, K. A., Schmidt, K., Schatz, H., Ahn, S., Pain, S. D., Montes, F., Ong, W. J., Greife, U., Allen, J., Bardayan, D. W., Blackmon, J. C., Blankstein, D., Cha, S., Chae, K. Y., Febbraro, M., Hall, M. R., Jones, K. L., Kontos, A., Meisel, Z., O'Malley, P. D., Schmitt, K. T., Smith, K., Smith, M. S., Thompson, P., Toomey, R., Vostinar, M., Walter, D.
Publikováno v:
Phys. Rev. Lett. 130 (2023) 212701
The rate of the final step in the astrophysical $\alpha$p-process, the $^{34}$Ar($\alpha$,\textit{p})$^{37}$K reaction, suffers from large uncertainties due to lack of experimental data, despite having a considerable impact on the observable light cu
Externí odkaz:
http://arxiv.org/abs/2305.19422
Autor:
Gray, T. J., Allmond, J. M., Xu, Z., King, T. T., Lubna, R. S., Crawford, H. L., Tripathi, V., Crider, B. P., Grzywacz, R., Liddick, S. N., Macchiavelli, A. O., Miyagi, T., Poves, A., Andalib, A., Argo, E., Benetti, C., Bhattacharya, S., Campbell, C. M., Carpenter, M. P., Chan, J., Chester, A., Christie, J., Clark, B. R., Cox, I., Doetsch, A. A., Dopfer, J., Duarte, J. G., Fallon, P., Frotscher, A., Gaballah, T., Harke, J. T., Heideman, J., Huegen, H., Holt, J. D., Jain, R., Kitamura, N., Kolos, K., Kondev, F. G., Laminack, A., Longfellow, B., Luitel, S., Madurga, M., Mahajan, R., Mogannam, M. J., Morse, C., Neupane, S., Nowicki, A., Ogunbeku, T. H., Ong, W. -J., Porzio, C., Prokop, C. J., Rasco, B. C., Ronning, E. K., Rubino, E., Ruland, T. J., Rykaczewski, K. P., Schaedig, L., Seweryniak, D., Siegl, K., Singh, M., Stuchbery, A. E., Tabor, S. L., Tang, T. L., Wheeler, T., Winger, J. A., Wood, J. L.
Excited-state spectroscopy from the first Facility for Rare Isotope Beams (FRIB) experiment is reported. A 24(2)-$\mu$s isomer was observed with the FRIB Decay Station initiator (FDSi) through a cascade of 224- and 401-keV $\gamma$ rays in coincidenc
Externí odkaz:
http://arxiv.org/abs/2302.11607
Autor:
Jayatissa, H., Avila, M. L., Rehm, K. E., Mohr, P., Meisel, Z., Chen, J., Hoffman, C. R., Liang, J., Müller-Gatermann, C., Neto, D., Ong, W. J., Psaltis, A., Santiago-Gonzalez, D., Tang, T. L., Ugalde, C., Wilson, G.
The $^{22}$Mg($\alpha$,$p$)$^{25}$Al reaction rate has been identified as a major source of uncertainty for understanding the nucleosynthesis flow in Type-I x-ray bursts (XRBs). We report a direct measurement of the energy- and angle-integrated cross
Externí odkaz:
http://arxiv.org/abs/2211.00628
Autor:
Puentes, D., Meisel, Z., Bollen, G., Hamaker, A., Langer, C., Leistenschneider, E., Nicoloff, C., Ong, W. -J., Redshaw, M., Ringle, R., Sumithrarachchi, C. S., Surbrook, J., Valverde, A. A., Yandow, I. T.
Publikováno v:
Phys. Rev. C 106, L012801 (2022)
We report a high precision mass measurement of $^{24}{\rm Si}$, performed with the LEBIT facility at the National Superconducting Cyclotron Laboratory. The atomic mass excess, $10\;753.8$(37) keV, is a factor of 5 more precise than previous results.
Externí odkaz:
http://arxiv.org/abs/2207.05818
Autor:
Schatz, H., Reyes, A. D. Becerril, Best, A., Brown, E. F., Chatziioannou, K., Chipps, K. A., Deibel, C. M., Ezzeddine, R., Galloway, D. K., Hansen, C. J., Herwig, F., Ji, A. P., Lugaro, M., Meisel, Z., Norman, D., Read, J. S., Roberts, L. F., Spyrou, A., Tews, I., Timmes, F. X., Travaglio, C., Vassh, N., Abia, C., Adsley, P., Agarwal, S., Aliotta, M., Aoki, W., Arcones, A., Aryan, A., Bandyopadhyay, A., Banu, A., Bardayan, D. W., Barnes, J., Bauswein, A., Beers, T. C., Bishop, J., Boztepe, T., Côté, B., Caplan, M. E., Champagne, A. E., Clark, J. A., Couder, M., Couture, A., de Mink, S. E., Debnath, S., deBoer, R. J., Hartogh, J. den, Denissenkov, P., Dexheimer, V., Dillmann, I., Escher, J. E., Famiano, M. A., Farmer, R., Fisher, R., Fröhlich, C., Frebel, A., Fryer, C., Fuller, G., Ganguly, A. K., Ghosh, S., Gibson, B. K., Gorda, T., Gourgouliatos, K. N., Graber, V., Gupta, M., Haxton, W., Heger, A., Hix, W. R., Ho, W C. G., Holmbeck, E. M., Hood, A. A., Huth, S., Imbriani, G., Izzard, R. G., Jain, R., Jayatissa, H., Johnston, Z., Kajino, T., Kankainen, A., Kiss, G. G., Kwiatkowski, A., La Cognata, M., Laird, A. M., Lamia, L., Landry, P., Laplace, E., Launey, K. D., Leahy, D., Leckenby, G., Lennarz, A., Longfellow, B., Lovell, A. E., Lynch, W. G., Lyons, S. M., Maeda, K., Masha, E., Matei, C., Merc, J., Messer, B., Montes, F., Mukherjee, A., Mumpower, M., Neto, D., Nevins, B., Newton, W. G., Nguyen, L. Q., Nishikawa, K., Nishimura, N., Nunes, F. M., O'Connor, E., O'Shea, B. W., Ong, W-J., Pain, S. D., Pajkos, M. A., Pignatari, M., Pizzone, R. G., Placco, V. M., Plewa, T., Pritychenko, B., Psaltis, A., Puentes, D., Qian, Y-Z., Radice, D., Rapagnani, D., Rebeiro, B. M., Reifarth, R., Richard, A. L., Rijal, N., Roederer, I. U., Rojo, J. S., K, J. S, Saito, Y., Schwenk, A., Sergi, M. L., Sidhu, R. S., Simon, A., Sivarani, T., Skúladóttir, Á., Smith, M. S., Spiridon, A., Sprouse, T. M., Starrfield, S., Steiner, A. W., Strieder, F., Sultana, I., Surman, R., Szücs, T., Tawfik, A., Thielemann, F., Trache, L., Trappitsch, R., Tsang, M. B., Tumino, A., Upadhyayula, S., Martínez, J. O. Valle, Van der Swaelmen, M., Vázquez, C. Viscasillas, Watts, A., Wehmeyer, B., Wiescher, M., Wrede, C., Yoon, J., Zegers, R G. T., Zermane, M. A., Zingale, M.
Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of
Externí odkaz:
http://arxiv.org/abs/2205.07996
Autor:
Saxena, M., Ong, W. -J, Meisel, Z., Hoff, D. E. M., Smirnova, N., Bender, P. C., Burcher, S. P., Carpenter, M. P., Carroll, J. J., Chester, A., Chiara, C. J., Conaway, R., Copp, P. A., Crider, B. P., Derkin, J., Estrade, A., Hamad, G., Harke, J. T., Jain, R., Jayatissa, H., Liddick, S. N., Longfellow, B., Mogannam, M., Montes, F., Nepal, N., Ogunbeku, T. H., Richard, A. L., Schatz, H., Soltesz, D., Subedi, S. K., Sultana, I., Tamashiro, A. S., Tripathi, V., Xiaog, Y., Zink, R.
We measured the $^{57}$Zn $\beta$-delayed proton ($\beta$p) and $\gamma$ emission at the National Superconducting Cyclotron Laboratory. We find a $^{57}$Zn half-life of 43.6 $\pm$ 0.2 ms, $\beta$p branching ratio of (84.7 $\pm$ 1.4)%, and identify fo
Externí odkaz:
http://arxiv.org/abs/2204.01621
Autor:
Schatz, H., Meisel, Z., Brown, E. F., Gupta, S. S., Hitt, G. W., Hix, W. R., Jain, R., Lau, R., Möller, P., Ong, W. -J., Shternin, P. S., Xu, Y., Wiescher, M.
Nuclear reactions heat and cool the crust of accreting neutron stars and need to be understood to interpret observations of X-ray bursts and of long-term cooling in transiently accreting systems. It was recently suggested that previously neglected ne
Externí odkaz:
http://arxiv.org/abs/2112.11544