Academic literature on the topic 'Nucleosynthesis'
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Journal articles on the topic "Nucleosynthesis"
Sprouse, Trevor M., Kelsey A. Lund, Jonah M. Miller, Gail C. McLaughlin, and Matthew R. Mumpower. "Emergent Nucleosynthesis from a 1.2 s Long Simulation of a Black Hole Accretion Disk." Astrophysical Journal 962, no. 1 (February 1, 2024): 79. http://dx.doi.org/10.3847/1538-4357/ad1819.
Full textYao, Xingqun, Motohiko Kusakabe, Toshitaka Kajino, Silvio Cherubini, Seiya Hayakawa, and Hidetoshi Yamaguchi. "Supernova Nucleosynthesis, Radioactive Nuclear Reactions and Neutrino-Mass Hierarchy." EPJ Web of Conferences 260 (2022): 01007. http://dx.doi.org/10.1051/epjconf/202226001007.
Full textJi, Alexander P., Sanjana Curtis, Nicholas Storm, Vedant Chandra, Kevin C. Schlaufman, Keivan G. Stassun, Alexander Heger, et al. "Spectacular Nucleosynthesis from Early Massive Stars." Astrophysical Journal Letters 961, no. 2 (January 31, 2024): L41. http://dx.doi.org/10.3847/2041-8213/ad19c4.
Full textRyan, Sean G. "Big Bang Nucleosynthesis, Population III, and Stellar Genetics in the Galactic Halo." Publications of the Astronomical Society of Australia 19, no. 2 (2002): 238–45. http://dx.doi.org/10.1071/as01067.
Full textMathews, G. J. "Nucleosynthesis and After: Supernovae and Nucleosynthesis." Science 274, no. 5291 (November 22, 1996): 1320b—1321b. http://dx.doi.org/10.1126/science.274.5291.1320b.
Full textKAJINO, TOSHITAKA, TAKAHIRO SASAQUI, TAKASHI YOSHIDA, and WAKO AOKI. "NEUTRINO OSCILLATION IN SUPERNOVA AND GRB NUCLEOSYNTHESIS." Modern Physics Letters A 23, no. 17n20 (June 28, 2008): 1409–18. http://dx.doi.org/10.1142/s0217732308027783.
Full textNie, Nicole X., Da Wang, Zachary A. Torrano, Richard W. Carlson, Conel M. O’D. Alexander, and Anat Shahar. "Meteorites have inherited nucleosynthetic anomalies of potassium-40 produced in supernovae." Science 379, no. 6630 (January 27, 2023): 372–76. http://dx.doi.org/10.1126/science.abn1783.
Full textTruran, James W. "The Oldest Stars as Tracers of Heavy Element Formation at Early Epochs." Symposium - International Astronomical Union 204 (2001): 333–34. http://dx.doi.org/10.1017/s0074180900226247.
Full textCoc, A. "Primordial Nucleosynthesis." Acta Physica Polonica B 44, no. 3 (2013): 521. http://dx.doi.org/10.5506/aphyspolb.44.521.
Full textCoc, Alain. "Primordial Nucleosynthesis." Journal of Physics: Conference Series 420 (March 25, 2013): 012136. http://dx.doi.org/10.1088/1742-6596/420/1/012136.
Full textDissertations / Theses on the topic "Nucleosynthesis"
Izzard, R. G. "Nucleosynthesis in binary stars." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604980.
Full textLeonard, Richard Edward. "Variations in Primordial Nucleosynthesis /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487932351056492.
Full textSmith, Christel Johanna. "Primordial nucleosynthesis and neutrino physics." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3354965.
Full textTitle from first page of PDF file (viewed June 16, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.
Joseph, Craig L. "Q-nucleosynthesis : implications for stellar evolution /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487260531956577.
Full textMoreno, Guzmán Fermín. "Accretion onto Neutron Stars: Hydrodynamics and Nucleosynthesis." Doctoral thesis, Universitat Politècnica de Catalunya, 2009. http://hdl.handle.net/10803/6594.
Full textIn this work we have tried, first, to study the effects of nuclear uncertainties, related to nuclear reaction rates, in the nucleosynthesis produced during a X-ray burst, and second, to simulate physical properties and associated nucleosynthesis to this kind of events, through hydrodynamical models.
In order to analyze the impact of uncertainties of the nuclear reaction rates in the nucleosynthesis, and due to the prohibitive calculation time with an hydrodinamical code, we have used a post-processing code which we have coupled, for a given set of 10 temperatures and densities profiles, an extensive nuclear reactions network formed by 606 isotopes and 3551 nuclear reactions, whose reaction rates have been modified using to alternative methods. In the first one, every rate has been individually modified, multiplying it by 0.1 and 10, calculating the final nucleosynthesis. This way, it is possible to evaluate the impact in final nucleosynthesis individual variations in the nuclear reaction rates. Also we have analyzed the effects in final nucleosynthesis by modifying the energy associated to each reaction (Q-value). In the second method, nuclear reaction rates have been modified simultaneously, multiplying each one by a random factor which follow a log-normal distribution with a probability of 95.5% of being in the interval [0.1,10]. In order to analyzed this method from an statistically point of view, the nucelosynthesis has been calculated up to 10,000 times, with a Monte Carlo code specifically built to this Thesis, for different set of random numbers. Obtained results with both methods are coincidents and show that for a network formed by 3,500 reactions approximately, only about 60 reactions have an impact in final yields greater than a factor of 2.Finally, we have used an hydrodynamical code, one-dimensional (spherically symmetric), Lagrangian and multi-shell, to which we have coupled a nuclear reactions network formed by 324 isotopes and 1392 reactions with the aim of reproduce physical parameters and nucleosynthesis produced during X-ray bursts. To do that, we have applied this code to different models, analyzing the effect of spatial resolution in the accreted shell, the metallicity of the transferred material as well as the mass of the neutron star, in the final result. For each model, we have simulated different bursts, with energies, luminosities and recurrence times coincidents with observations and, together with the nucleosynthesis, similar to the results obtained by other authors.
A mediados de los años 70, varios autores sugirieron que la acreción de material rico en hidrógeno y helio por parte de una estrella de neutrones, integrante de un sistema binario donde la masa de la estrella compañera fuese pequeña, podría explicar las erupciones termonucleares observadas por los primeros satélites lanzados al espacio para analizar la banda X del espectro electromagnético. Dicho fenómeno, conocido como erupciones de rayos X de tipo I (en inglés, type I X-ray bursts, XRB), consiste en el alud termonuclear producido por la fusión termonuclear del material acretado, en condiciones degeneradas. Este tipo de explosión termonuclear de origen estelar es el más frecuente en nuestra galaxia (y el tercero, tras las supernovas y las novas clásicas, en términos de energía total liberada), debido a su corto periodo de recurrencia. Como consecuencia del extremo campo gravitatorio de una estrella de neutrones, se cree que la nucleosíntesis producida durante este tipo de eventos no es expulsada al medio interestelar, pasando a formar parte de la corteza de la estrella.
En este trabajo hemos intentado, por un lado, estudiar los efectos de las incertidumbres de origen nuclear, asociadas a los ritmos de las reacciones nucleares, en la nucleosíntesis producida durante un X-ray burst; y por otro lado, simular las propiedades físicas y la nucleosíntesis asociada a este tipo de eventos, mediante modelos hidrodinámicos.
Para estudiar el impacto de las incertidumbres de los ritmos de las reacciones nucleares en la nucleosíntesis, y debido a que el tiempo de cálculo con un código hidrodinámico resultaría prohibitivo, hemos utilizado un código de post-procesado al que se ha acoplado, para un conjunto determinado de 10 perfiles de temperatura y densidad, una extensa red de reacciones nucleares, formada por 606 isótopos y 3551 reacciones nucleares, cuyos ritmos de reacción han sido modificados utilizando dos métodos alternativos. En el primero, cada ritmo ha sido modificado individualmente, multiplicándolo por 0.1 y 10, calculándose la nucleosíntesis final. De esta manera, puede evaluarse el impacto que tienen en las abundancias finales las variaciones individuales de los ritmos de las reacciones nucleares.
Así mismo, también se ha analizado el efecto que produce en las abundancias finales el hecho de modificar la energía asociada a cada reacción (Q-value). En el segundo método, los ritmos nucleares se han modificado simultáneamente, multiplicando cada uno de ellos por un factor aleatorio según una distribución log-normal, y cuya probabilidad de encontrarse en el intervalo [0.1,10] es del 95,5%. Para poder hacer una estimación estadística de este último método, se ha calculado la nucleosíntesis hasta 10.000 veces, con un código Monte Carlo específicamente construido para esta Tesis, para diferentes conjuntos de números aleatorios. Los resultados obtenidos con ambos métodos son coincidentes y demuestran que, para una red formada por unas 3500 reacciones nucleares, sólo unas 60 reacciones tienen un impacto en las abundancias finales mayor que un factor 2.
Por último, hemos utilizado un código hidrodinámico, unidimensional (en simetría esférica), Lagrangiano y multicapa, al que se ha acoplado una red de reacciones nucleares formada por 324 isótopos y 1392 reacciones nucleares, con el objetivo de reproducir los parámetros físicos y la nucleosíntesis producida en los X-ray bursts. Para ello, hemos aplicado este código a diferentes modelos, analizando el efecto de la resolución espacial de la capa acretada, la metalicidad del material transferido, así como la masa de la estrella de neutrones, en el resultado final. Para cada modelo, hemos simulado diferentes erupciones, con energías, luminosidades, y periodos de recurrencia, coincidentes con las observaciones y, junto con la nucleosíntesis, similares a los resultados obtenidos por otros autores.
Alvelid, Jonatan. "r-Process Simulation and Heavy-Element Nucleosynthesis." Thesis, KTH, Fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-150101.
Full textr-process, rapid neutron capture process, är en snabb nukleosyntesprocess. Snabba neutroninfångningar producerar allt mer instabila neutronrika atomkärnor som slutligen betaminussönderfaller när sannolikheten för betasönderfall blir högre än sannolikheten för en ny neutroninfångning. Därefeter fångas fler neutroner och processen upprepar sig själv i r-processkedjor. Väldigt neutronrika tunga ämnen bildas under denna process som kräver explosiva astrofysikaliska platser med höga neutronflux. Då det ännu är okänt exakt var dessa platser är så hjälper r-processsimulationer att förstå detta. För att förbättra simuleringsresultaten och därmed förståelsen av r-processer så är det viktigt att förstå hur initiala parametrar påverkar simuleringarna. Temperatur, densitet och förhållandet mellan fria elektroner och nukleoner är tre parametrar som denna rapport behandlar. Påverkan av kärrnmassor diskuteras också, vilket är viktigt då ingen exakt modell för kärnmassor existerar. Slutligen behandlas även olika stoppkriterium vilket representerar olika fysikaliska miljöer där r-processer eventuellt förekommer. Resultat från simuleringar, gjorda i r-Java 2.0, visar på att r-processimuleringar är känsliga för alla parametrar som har behandlats men där vidare forskning får visa till vilken grad. En bättre förståelse för hur simuleringarna påverkas av parametrar kommer förhoppningsvis öka förståelsen för r-processer och var i universum de förekommer.
Karlsson, Daniel. "Nuclear density functional theory calculations for the r-process nucleosynthesis : Nuclear density functional theory calculations for the r-process nucleosynthesis." Thesis, KTH, Fysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-250775.
Full textErni, Peter. "Early nucleosynthesis studies with quasar absorption line spectroscopy." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=983739854.
Full textKifonidis, Konstantinos. "Nucleosynthesis and hydrodynamic instabilities in core collapse supernovae." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962128457.
Full textLau, Ho Bun. "Evolution and nucleosynthesis of zero-metallicity AGB stars." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612023.
Full textBooks on the topic "Nucleosynthesis"
Adamenko, Stanislav, Franco Selleri, and Alwyn van der Merwe, eds. Controlled Nucleosynthesis. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-5874-5.
Full textHashimoto, Masa-aki, Riou Nakamura, E. P. Berni Ann Thushari, and Kenzo Arai. Big-Bang Nucleosynthesis. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2935-7.
Full textJ, Norton Andrew, ed. Stellar evolution and nucleosynthesis. Cambridge: Cambridge University Press, 2010.
Find full textA, Olive Keith, Fermi National Accelerator Laboratory, and United States. National Aeronautics and Space Administration., eds. Big-bang nucleosynthesis revisited. [Batavia, Ill.]: Fermi National Accelerator Laboratory, 1989.
Find full textAudouze, Jean. Nucleosynthesis and chemical evolution. Sauverny-Versoix, Switzerland: Geneva Observatory, 1987.
Find full textA, Olive Keith, Fermi National Accelerator Laboratory, and United States. National Aeronautics and Space Administration., eds. Big-bang nucleosynthesis revisited. [Batavia, Ill.]: Fermi National Accelerator Laboratory, 1989.
Find full text1940-, Arnett W. David, and Truran James W, eds. Nucleosynthesis: Challenges and new developments. Chicago: University of Chicago Press, 1985.
Find full textBandyopadhyay, Debades, and Kamales Kar. Supernovae, Neutron Star Physics and Nucleosynthesis. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-95171-9.
Full textSato, K., and J. Audouze, eds. Primordial Nucleosynthesis and Evolution of Early Universe. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3410-1.
Full textN, Schramm David, Truran James W, Fermi National Accelerator Laboratory, and United States. National Aeronautics and Space Administration., eds. On relative supernova rates and nucleosynthesis roles. [Batavia, Ill.]: Fermi National Accelerator Laboratory, 1988.
Find full textBook chapters on the topic "Nucleosynthesis"
Goswami, Jitendra Nath. "Nucleosynthesis." In Encyclopedia of Earth Sciences Series, 1–6. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-39193-9_343-1.
Full textGoswami, Jitendra Nath. "Nucleosynthesis." In Encyclopedia of Earth Sciences Series, 1014–19. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-39312-4_343.
Full textDiehl, Roland. "Nucleosynthesis." In The Universe in Gamma Rays, 233–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04593-0_10.
Full textOlive, K. A. "Primordial Nucleosynthesis." In Theoretical and Observational Cosmology, 261–304. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4455-1_7.
Full textPrantzos, Nikos. "Nucleosynthesis, Neutrino." In Encyclopedia of Astrobiology, 1150. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_1052.
Full textPrantzos, Nikos, and Sylvia Ekström. "Stellar Nucleosynthesis." In Encyclopedia of Astrobiology, 1584–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_1084.
Full textReeves, Hubert. "Primordial Nucleosynthesis." In Galaxy Evolution: Connecting the Distant Universe with the Local Fossil Record, 17–21. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4213-7_3.
Full textPrantzos, Nikos. "Nucleosynthesis, Neutrino." In Encyclopedia of Astrobiology, 1725. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_1052.
Full textPrantzos, Nikos, and Sylvia Ekström. "Nucleosynthesis, Stellar." In Encyclopedia of Astrobiology, 1725–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_1084.
Full textPrantzos, Nikos. "Nucleosynthesis, Explosive." In Encyclopedia of Astrobiology, 1724–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_558.
Full textConference papers on the topic "Nucleosynthesis"
Meyer, Bradley S. "Supernova nucleosynthesis." In ASTROPHYSICAL IMPLICATIONS OF THE LABORATORY STUDY OF PRESOLAR MATERIALS. ASCE, 1997. http://dx.doi.org/10.1063/1.53311.
Full textCoc, Alain. "Primordial Nucleosynthesis." In Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016). Journal of the Physical Society of Japan, 2017. http://dx.doi.org/10.7566/jpscp.14.010102.
Full textHashimoto, M., S. Nagataki, K. Sato, and S. Yamada. "Supernova nucleosynthesis." In TOURS SYMPOSIUM ON NUCLEAR PHYSICS III. ASCE, 1998. http://dx.doi.org/10.1063/1.55171.
Full textKajino, Toshitaka. "Nucleosynthesis and Neutrinos." In INTERNATIONAL SYMPOSIUM ON NEW FACES OF ATOMIC NUCLEI. AIP, 2011. http://dx.doi.org/10.1063/1.3584074.
Full textNOMOTO, K., K. MAEDA, T. NAKAMURA, K. IWAMOTO, P. A. MAZZALI, I. J. DANZIGER, and F. PATAT. "NUCLEOSYNTHESIS IN HYPERNOVAE." In Proceedings of the International Symposium. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812791276_0023.
Full textJosé, Jordi. "Nucleosynthesis in Novae." In Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016). Journal of the Physical Society of Japan, 2017. http://dx.doi.org/10.7566/jpscp.14.010501.
Full textCoc, Alain. "Big-bang nucleosynthesis." In International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX. Trieste, Italy: Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.028.0011.
Full textCoc, Alain, and Elisabeth Vangioni. "Big bang nucleosynthesis." In XIII Nuclei in the Cosmos. Trieste, Italy: Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.204.0022.
Full textMeyer, Bradley, and Ethan E. Kilgore. "Nucleosynthesis, reaction networks." In XIII Nuclei in the Cosmos. Trieste, Italy: Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.204.0187.
Full textChieffi, Alessandro, and Marco Limongi. "Understanding Cosmic Nucleosynthesis." In The Extreme sky: Sampling the Universe above 10 keV. Trieste, Italy: Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.096.0058.
Full textReports on the topic "Nucleosynthesis"
Lippuner, Jonas. Nucleosynthesis outreach slides. Office of Scientific and Technical Information (OSTI), November 2017. http://dx.doi.org/10.2172/1407868.
Full textFryer, Christopher Lee, Stefano Gandolfi, Przemyslaw R. Wozniak, Joseph Allen Carlson, Aaron Joseph Couture, Joshua C. Dolence, Wesley Paul Even, et al. Nucleosynthesis Probes of Cosmic Explosions. Office of Scientific and Technical Information (OSTI), March 2020. http://dx.doi.org/10.2172/1603951.
Full textKnox, L., and A. Kosowsky. Primordial nucleosynthesis in conformal Weyl gravity. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10194676.
Full textHaxton, W. C. Neutrino nucleosynthesis in supernovae: Shell model predictions. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/5022225.
Full textKolb, E. W., M. S. Turner, and T. P. Walker. Effect of interacting particles on primordial nucleosynthesis. Office of Scientific and Technical Information (OSTI), May 1986. http://dx.doi.org/10.2172/5525132.
Full textHart, M. Boson Fermion Nuclei Stellar Nucleosynthesis: Monograph #7. Office of Scientific and Technical Information (OSTI), March 2021. http://dx.doi.org/10.2172/1773253.
Full textBurke, Jason T., Steven A. Sheets, Nicholas D. Scielzo, Lee A. Bernstein, Rob Hoffman, and Eric B. Norman. Helium Burning in Steady State and Explosive Nucleosynthesis. Office of Scientific and Technical Information (OSTI), February 2009. http://dx.doi.org/10.2172/1124908.
Full textFuller, George. Neutrinos and Nucleosynthesis in Hot and Dense Matter. Office of Scientific and Technical Information (OSTI), January 2016. http://dx.doi.org/10.2172/1234657.
Full textHoltmann, Erich Nielsen. Big-bang nucleosynthesis with high-energy photon injection. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/753050.
Full textKasen, Daniel. Final Technical Report - Modeling Astrophysical Explosions and Nucleosynthesis. Office of Scientific and Technical Information (OSTI), August 2022. http://dx.doi.org/10.2172/1880189.
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