Sensitivity of X-ray burst models to uncertainties in nuclear processes

Karl Smith; A. Matthew Amthor; Richard Cyburt; Ryan Ferguson; Alexander Heger; Emily Johnson; Matthew Klein; Zachary Meisel; Thomas Rauscher; Alexander Sakharuk; Friedrich K. Tielemann; Hendrik Schatz; Scott Warren; Michael Wiescher

doi:10.22323/1.053.0178

Sensitivity of X-ray burst models to uncertainties in nuclear processes

Karl Smith, A. Matthew Amthor, Richard Cyburt, Ryan Ferguson, Alexander Heger, Emily Johnson, Matthew Klein, Zachary Meisel, Thomas Rauscher, Alexander Sakharuk, Friedrich K. Tielemann, Hendrik Schatz, Scott Warren, Michael Wiescher

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

1 Citation (Scopus)

Abstract

The underlying nuclear reaction sequence in Type I X-ray bursts is the rp-process. We examine the sensitivity of current X-ray burst models to uncertainties in nuclear reaction rates in terms of predicted X-ray light curves and final produced ashes. Many of the relevant reaction rates have significantly large uncertainties that impact the results of X-ray burst models. We used an updated nuclear reaction network and ran almost 400,000 simulations with a single-zone X-ray burst model to determine the influence of individual reaction rate variations. We also explored the validity of single-zone approximations as tools to investigate nuclear physics by comparing to a full 1-D multi-zone model. We show that a properly calibrated single-zone model can save computation time and give similar results to multi-zone models. Using the calibrated singlezone model we identify the most significant reaction in the X-ray burst.

Original language	English
Title of host publication	Proceedings of Science
Subtitle of host publication	10th Symposium on Nuclei in the Cosmos
Publisher	Sissa Medialab, SRL
Number of pages	5
DOIs	https://doi.org/10.22323/1.053.0178
Publication status	Published - 29 Jul 2009
Externally published	Yes
Event	Symposium on Nuclei in the Cosmos, NIC 2008 - Mackinac Island, United States of America Duration: 27 Jul 2008 → 1 Aug 2008 Conference number: 10th https://pos.sissa.it/053/

Publication series

Name	Proceedings of Science
Publisher	Sissa Medialab srl
Volume	053
ISSN (Print)	1824-8039

Conference

Conference	Symposium on Nuclei in the Cosmos, NIC 2008
Abbreviated title	NIC X
Country/Territory	United States of America
City	Mackinac Island
Period	27/07/08 → 1/08/08
Other	Nuclei in the Cosmos is the most important international meeting in the field of nuclear astrophysics. It brings together nuclear experimentalists, nuclear theorists, astronomers, theoretical astrophysicists, cosmochemists, and others interested in the scientific questions at the interface of nuclear physics and astrophysics. These questions concern, for example, the origin of the elements in the cosmos and the nuclear reactions that occur in the big bang, in stars, and in stellar explosions.
Internet address	https://pos.sissa.it/053/

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10.22323/1.053.0178Licence: CC BY-NC-SA

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Smith, K., Amthor, A. M., Cyburt, R., Ferguson, R., Heger, A., Johnson, E., Klein, M., Meisel, Z., Rauscher, T., Sakharuk, A., Tielemann, F. K., Schatz, H., Warren, S., & Wiescher, M. (2009). Sensitivity of X-ray burst models to uncertainties in nuclear processes. In Proceedings of Science: 10th Symposium on Nuclei in the Cosmos Article 178 (Proceedings of Science; Vol. 053). Sissa Medialab, SRL. https://doi.org/10.22323/1.053.0178

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title = "Sensitivity of X-ray burst models to uncertainties in nuclear processes",

abstract = "The underlying nuclear reaction sequence in Type I X-ray bursts is the rp-process. We examine the sensitivity of current X-ray burst models to uncertainties in nuclear reaction rates in terms of predicted X-ray light curves and final produced ashes. Many of the relevant reaction rates have significantly large uncertainties that impact the results of X-ray burst models. We used an updated nuclear reaction network and ran almost 400,000 simulations with a single-zone X-ray burst model to determine the influence of individual reaction rate variations. We also explored the validity of single-zone approximations as tools to investigate nuclear physics by comparing to a full 1-D multi-zone model. We show that a properly calibrated single-zone model can save computation time and give similar results to multi-zone models. Using the calibrated singlezone model we identify the most significant reaction in the X-ray burst.",

author = "Karl Smith and Amthor, {A. Matthew} and Richard Cyburt and Ryan Ferguson and Alexander Heger and Emily Johnson and Matthew Klein and Zachary Meisel and Thomas Rauscher and Alexander Sakharuk and Tielemann, {Friedrich K.} and Hendrik Schatz and Scott Warren and Michael Wiescher",

year = "2009",

month = jul,

day = "29",

doi = "10.22323/1.053.0178",

language = "English",

series = "Proceedings of Science",

publisher = "Sissa Medialab, SRL",

booktitle = "Proceedings of Science",

note = "Symposium on Nuclei in the Cosmos, NIC 2008, NIC X ; Conference date: 27-07-2008 Through 01-08-2008",

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Smith, K, Amthor, AM, Cyburt, R, Ferguson, R, Heger, A, Johnson, E, Klein, M, Meisel, Z, Rauscher, T, Sakharuk, A, Tielemann, FK, Schatz, H, Warren, S & Wiescher, M 2009, Sensitivity of X-ray burst models to uncertainties in nuclear processes. in Proceedings of Science: 10th Symposium on Nuclei in the Cosmos., 178, Proceedings of Science, vol. 053, Sissa Medialab, SRL, Symposium on Nuclei in the Cosmos, NIC 2008, Mackinac Island, Michigan, United States of America, 27/07/08. https://doi.org/10.22323/1.053.0178

Sensitivity of X-ray burst models to uncertainties in nuclear processes. / Smith, Karl; Amthor, A. Matthew; Cyburt, Richard et al.
Proceedings of Science: 10th Symposium on Nuclei in the Cosmos. Sissa Medialab, SRL, 2009. 178 (Proceedings of Science; Vol. 053).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

TY - GEN

T1 - Sensitivity of X-ray burst models to uncertainties in nuclear processes

AU - Smith, Karl

AU - Amthor, A. Matthew

AU - Cyburt, Richard

AU - Ferguson, Ryan

AU - Heger, Alexander

AU - Johnson, Emily

AU - Klein, Matthew

AU - Meisel, Zachary

AU - Rauscher, Thomas

AU - Sakharuk, Alexander

AU - Tielemann, Friedrich K.

AU - Schatz, Hendrik

AU - Warren, Scott

AU - Wiescher, Michael

N1 - Conference code: 10th

PY - 2009/7/29

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N2 - The underlying nuclear reaction sequence in Type I X-ray bursts is the rp-process. We examine the sensitivity of current X-ray burst models to uncertainties in nuclear reaction rates in terms of predicted X-ray light curves and final produced ashes. Many of the relevant reaction rates have significantly large uncertainties that impact the results of X-ray burst models. We used an updated nuclear reaction network and ran almost 400,000 simulations with a single-zone X-ray burst model to determine the influence of individual reaction rate variations. We also explored the validity of single-zone approximations as tools to investigate nuclear physics by comparing to a full 1-D multi-zone model. We show that a properly calibrated single-zone model can save computation time and give similar results to multi-zone models. Using the calibrated singlezone model we identify the most significant reaction in the X-ray burst.

AB - The underlying nuclear reaction sequence in Type I X-ray bursts is the rp-process. We examine the sensitivity of current X-ray burst models to uncertainties in nuclear reaction rates in terms of predicted X-ray light curves and final produced ashes. Many of the relevant reaction rates have significantly large uncertainties that impact the results of X-ray burst models. We used an updated nuclear reaction network and ran almost 400,000 simulations with a single-zone X-ray burst model to determine the influence of individual reaction rate variations. We also explored the validity of single-zone approximations as tools to investigate nuclear physics by comparing to a full 1-D multi-zone model. We show that a properly calibrated single-zone model can save computation time and give similar results to multi-zone models. Using the calibrated singlezone model we identify the most significant reaction in the X-ray burst.

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M3 - Conference Paper

AN - SCOPUS:84887299299

T3 - Proceedings of Science

BT - Proceedings of Science

PB - Sissa Medialab, SRL

T2 - Symposium on Nuclei in the Cosmos, NIC 2008

Y2 - 27 July 2008 through 1 August 2008

ER -

Sensitivity of X-ray burst models to uncertainties in nuclear processes

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