TY - JOUR
T1 - Masking the Equation-of-State Effects in Binary Neutron Star Mergers
AU - Tsokaros, Antonios
AU - Bamber, Jamie
AU - Ruiz, Milton
AU - Shapiro, Stuart L.
N1 - This work was supported in part by National Science Foundation (NSF) Grants No.PHY-2308242, No.OAC-2310548 and No. PHY-2006066 to the University of Illinois at Urbana-Champaign. A.T. acknowledges support from the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana-Champaign through the NCSA Fellows program. M.R. acknowledges support by the Generalitat Valenciana Grant No.CIDEGENT/2021/046 and by the Spanish Agencia Estatal de Investigacin (Grant No.PID2021-125485NB-C21). This work used Stampede2 at TACC and Anvil at Purdue University through allocation MCA99S008, from the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS) program, which is supported by National Science Foundation Grant No.2138259, No.2138286, No.2138307, No.2137603, and No.2138296. This research also used Frontera at TACC through allocation AST20025. Frontera is made possible by NSF Award No.OAC-1818253. The authors thankfully acknowledge the computer resources at MareNostrum and the technical support provided by the Barcelona Supercomputing Center (AECT-2023-1-0006).
PY - 2025/3/28
Y1 - 2025/3/28
N2 - Recent nonmagnetized studies of binary neutron star mergers have indicated the possibility of identifying equation-of-state features, such as a phase transition or a quark-hadron crossover, based on the frequency shift of the main peak in the postmerger gravitational wave spectrum. By performing a series of general relativistic, magnetohydrodynamic simulations we show that similar frequency shifts can be obtained due to the effect of the magnetic field. The existing degeneracy can either mask or nullify a shift due to a specific equation-of-state feature, and therefore the interpretation of observational data is more complicated than previously thought, requiring a more complete treatment that would necessarily include the neutron star's magnetic field.
AB - Recent nonmagnetized studies of binary neutron star mergers have indicated the possibility of identifying equation-of-state features, such as a phase transition or a quark-hadron crossover, based on the frequency shift of the main peak in the postmerger gravitational wave spectrum. By performing a series of general relativistic, magnetohydrodynamic simulations we show that similar frequency shifts can be obtained due to the effect of the magnetic field. The existing degeneracy can either mask or nullify a shift due to a specific equation-of-state feature, and therefore the interpretation of observational data is more complicated than previously thought, requiring a more complete treatment that would necessarily include the neutron star's magnetic field.
UR - http://www.scopus.com/inward/record.url?scp=105001498510&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=105001498510&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.134.121401
DO - 10.1103/PhysRevLett.134.121401
M3 - Article
C2 - 40215491
AN - SCOPUS:105001498510
SN - 0031-9007
VL - 134
JO - Physical review letters
JF - Physical review letters
IS - 12
M1 - 121401
ER -