Bogdanov, Slavko and Lamb, Frederick K. and Mahmoodifar, Simin and Miller, M. Coleman and Morsink, Sharon M. and Riley, Thomas E. and Strohmayer, Tod E. and Tung, Albert K. and Watts, Anna L. and Dittmann, Alexander J. and Chakrabarty, Deepto and Guillot, Sebastien and Arzoumanian, Zaven and Gendreau, Keith C. (2019) Constraining the Neutron Star Mass–Radius Relation and Dense Matter Equation of State with NICER . II. Emission from Hot Spots on a Rapidly Rotating Neutron Star. The Astrophysical Journal, 887 (1). L26. ISSN 2041-8213
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Abstract
We describe the model of surface emission from a rapidly rotating neutron star that is applied to Neutron Star Interior Composition Explorer X-ray data of millisecond pulsars in order to statistically constrain the neutron star mass–radius relation and dense matter equation of state. To ensure that the associated calculations are both accurate and precise, we conduct an extensive suite of verification tests between our numerical codes for both the Schwarzschild + Doppler and Oblate Schwarzschild approximations, and compare both approximations against exact numerical calculations. We find superb agreement between the code outputs, as well as in comparisons against a set of analytical and semi-analytical calculations, which, combined with their speed, demonstrates that the codes are well suited for large-scale statistical sampling applications. A set of verified, high-precision reference synthetic pulse profiles is provided to the community to facilitate testing of other independently developed codes.
Item Type: | Article |
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Subjects: | Euro Archives > Physics and Astronomy |
Depositing User: | Managing Editor |
Date Deposited: | 27 May 2023 04:10 |
Last Modified: | 12 Jan 2024 04:37 |
URI: | http://publish7promo.com/id/eprint/2607 |