Finite size effects on the light curves of slowly-rotating neutron stars

被引：3

作者：

Sotani, Hajime ^{[1
]}

Silva, Hector O. ^{[2
]}

Pappas, George ^{[3
,4
,5
]}

机构：

[1] Natl Astron Observ Japan, Div Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan

[2] Montana State Univ, Dept Phys, eXtreme Grav Inst, Bozeman, MT 59717 USA

[3] Sapienza Univ Roma, Dipartitnento Fis, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[4] Sez INFN Romal, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[5] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 04期

基金：

欧盟地平线“2020”;

关键词：

EQUATION-OF-STATE; PULSE PROFILES; VARIABILITY; HOT;

D O I：

10.1103/PhysRevD.100.043006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An important question when studying the light curves produced by hot spots on the surface of rotating neutron stars is, how might the shape of the light curve be affected by relaxing some of the simplifying assumptions that one would adopt on a first treatment of the problem, such as that of a pointlike spot. In this work we explore the dependence of light curves on the size and shape of a single hot spot on the surface of slowly rotating neutron stars. More specifically, we consider two different shapes for the hot spots (circular and annular) and examine the resulting light curves as functions of the opening angle of the hot spot (for both) and width (for the latter). We find that the pointlike approximation can describe light curves reasonably well, if the opening angle of the hot spot is less than similar to 5 degrees. Furthermore, we find that light curves from annular spots are almost the same as those of the full circular spot if the opening angle is less than similar to 35 degrees independently of the hot spot's width.

引用

页数：10

共 51 条

[1] Measurement of the Soft-Drop Jet Mass in pp Collisions at √s=13 TeV with the ATLAS Detector [J].

Aaboud, M. ;

Aad, G. ;

Abbott, B. ;

Abdinov, O. ;

Abeloos, B. ;

Abidi, S. H. ;

AbouZeid, O. S. ;

Abraham, N. L. ;

Abramowicz, H. ;

Abreu, H. ;

Abreu, R. ;

Abulaiti, Y. ;

Acharya, B. S. ;

Adachi, S. ;

Adamczyk, L. ;

Adelman, J. ;

Adersberger, M. ;

Adye, T. ;

Affolder, A. A. ;

Afik, Y. ;

Agheorghiesei, C. ;

Aguilar-Saavedra, J. A. ;

Ahlen, S. P. ;

Ahmadov, F. ;

Aielli, G. ;

Akatsuka, S. ;

Akerstedt, H. ;

Akesson, T. P. A. ;

Akilli, E. ;

Akimov, A., V ;

Alberghi, G. L. ;

Albert, J. ;

Albicocco, P. ;

Alconada Verzini, M. J. ;

Alderweireldt, S. C. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alexa, C. ;

Alexander, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Ali, B. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Alkire, S. P. ;

Allbrooke, B. M. M. ;

Allen, B. W. ;

Allport, P. P. ;

Aloisio, A. .

PHYSICAL REVIEW LETTERS, 2018, 121 (09)

[2] GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adams, T. ;

Addesso, P. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Afrough, M. ;

Agarwal, B. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, B. ;

Allen, G. ;

Allocca, A. ;

Altin, P. A. ;

Amato, A. ;

Ananyeva, A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Angelova, S. V. ;

Antier, S. ;

Appert, S. ;

Arai, K. ;

Araya, M. C. ;

Areeda, J. S. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Ast, M. ;

Aston, S. M. ;

Astone, P. ;

Atallah, D. V. ;

Aufmuth, P. ;

Aulbert, C. ;

AultONeal, K. ;

Austin, C. ;

Avila-Alvarez, A. ;

Babak, S. ;

Bacon, P. ;

Bader, M. K. M. .

PHYSICAL REVIEW LETTERS, 2017, 119 (16)

[3] Gravitational-Wave Constraints on the Neutron-Star-Matter Equation of State [J].

Annala, Eemeli ;

Gorda, Tyler ;

Kurkela, Aleksi ;

Vuorinen, Aleksi .

PHYSICAL REVIEW LETTERS, 2018, 120 (17)

[4]

[Anonymous], ARXIV190411534

[5]

[Anonymous], AIP C SER

[6]

[Anonymous], ARXIV190504900

[7]

[Anonymous], ARXIV190210269

[8]

[Anonymous], ARXIV190406759

[9] A Massive Pulsar in a Compact Relativistic Binary [J].

Antoniadis, John ;

Freire, Paulo C. C. ;

Wex, Norbert ;

Tauris, Thomas M. ;

Lynch, Ryan S. ;

van Kerkwijk, Marten H. ;

Kramer, Michael ;

Bassa, Cees ;

Dhillon, Vik S. ;

Driebe, Thomas ;

Hessels, Jason W. T. ;

Kaspi, Victoria M. ;

Kondratiev, Vladislav I. ;

Langer, Norbert ;

Marsh, Thomas R. ;

McLaughlin, Maura A. ;

Pennucci, Timothy T. ;

Ransom, Scott M. ;

Stairs, Ingrid H. ;

van Leeuwen, Joeri ;

Verbiest, Joris P. W. ;

Whelan, David G. .

SCIENCE, 2013, 340 (6131) :448

[10] The Neutron star Interior Composition Explorer (NICER): mission definition [J].

Arzoumanian, Z. ;

Gendreau, K. C. ;

Baker, C. L. ;

Cazeau, T. ;

Hestnes, P. ;

Kellogg, J. W. ;

Kenyon, S. J. ;

Kozon, R. P. ;

Liu, K. -C. ;

Manthripragada, S. S. ;

Markwardt, C. B. ;

Mitchell, A. L. ;

Mitchell, J. W. ;

Monroe, C. A. ;

Okajima, T. ;

Pollard, S. E. ;

Powers, D. F. ;

Savadkin, B. J. ;

Winternitz, L. B. ;

Chen, P. T. ;

Wright, M. R. ;

Foster, R. ;

Prigozhin, G. ;

Remillard, R. ;

Doty, J. .

SPACE TELESCOPES AND INSTRUMENTATION 2014: ULTRAVIOLET TO GAMMA RAY, 2014, 9144

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