0000005683 00000 n Our previous work showed that, because of the effect of gravitational lensing, dipolar fields cannot reproduce the strong pulsations observed in the four nearby pulsars for which surface thermal radiation has been detected: PSR 0833-45 (Vela), PSR 0656 + 14, PSR 0630 + 178 (Geminga), and PSR 1055 + 52. RIS, This site uses cookies. The Institute of Physics (IOP) is a leading scientific society promoting physics and bringing physicists together for the benefit of all. Assuming a standard neutron star mass of 1.4. 0000018011 00000 n 0000012343 00000 n higher, temperatures as high as 109 K, and, in gen-eral, a reservoir of rota-arcmin tional kinetic energy out-put that can be significantly greater than the total luminosity of our sun. We model the temperature distribution at the surface of a magnetized neutron star and study the effects on the observable X-ray spectra and light curves, taking fully into account gravitational lensing. 0000015215 00000 n 0000003460 00000 n We compare the recent temperature estimate for Geminga with neutron star cooling models. Printed in U.S.A. You do not need to reset your password if you login via Athens or an Institutional login. It works to advance physics research, application and education; and engages with policy makers and the public to develop awareness and understanding of physics. 0000007202 00000 n Postal 70-264,04510 México D.F., Mexico, Received 1996 February 7 0000012801 00000 n 114 0 obj << /Linearized 1 /O 116 /H [ 1667 1025 ] /L 692628 /E 61370 /N 17 /T 690229 >> endobj xref 114 62 0000000016 00000 n BibTeX preparation). 0000019697 00000 n To find out more, see our, Browse more than 70 science journal titles, Read the very best research published in IOP journals, Read open access proceedings from science conferences worldwide, We complete our study of pulsars' nonuniform surface temperature and its effects on their soft X-ray thermal emission. We complete our study of pulsars' nonuniform surface temperature and its effects on their soft X-ray thermal emission. 0000005367 00000 n The description is based on the spectral class. 0000051043 00000 n Printed in U.S.A. Pulsar X-Ray and Gamma-Ray Pulse Profiles: Constraint on Obliquity and Observer Angles, A Broadband X-Ray Study of the Geminga Pulsar, Models for X-Ray Emission from Isolated Pulsars, Inverse Compton Scattering: Gap Parameters, Energy Loss of the Particles, and Possible Implications for Pulsar Radio Emission, The Soft Gamma Repeaters as Very Strongly Magnetized Neutron Stars. Authors: Dany Page (Submitted on 6 Apr 1994) Abstract: We show that Geminga's surface temperature can be understood by both types of neutrino cooling scenarios, i.e, slow neutrino cooling by the modified Urca process or fast neutrino cooling by the direct Urca process or by some exotic matter, and thus does not allow us to … You will only need to do this once. 0000013569 00000 n Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.

X-ray Multimirror Mission–Newton observations of the Geminga pulsar show a 43–electron volt spectrum from the whole neutron star surface, as well as a power-law component above 2 kiloelectron volts. Volume 473, The Astrophysical Journal, 0000006803 00000 n 0000051418 00000 n Only dipolar fields are considered here.

0000009130 00000 n 0000021540 00000 n

H�b```f``kf`c`�`d@ A�;�F�h�ꅜ����rN�r�bˮl��Ey&�0��xm�� *Z�Zo���� S_ h0|3���sr8L0dt�{�q���ܮ#�{�]�]ɿشU@C������Ŧe'�-2�[ڸ��I:��X�u��I��O>ga�� �]'�Y_R^��""��-�*j��������,�8�.�s�Ö�:5��8���L6�>�v�\��K�SWtC6~6�9�s�!P��N�%�Cj/�O8%�d�m~V�X>����B< 9�V&. Select your desired journals and corridors below. Our previous work showed that, because of the effect of gravitational lensing, dipolar fields cannot reproduce the strong pulsations observed in the four nearby pulsars for which surface thermal radiation has been detected: PSR 0833-45 (Vela), PSR 0656 + 14, PSR 0630 + … 0000002670 00000 n 0000010873 00000 n 0000025307 00000 n The mission of the AAS is to enhance and share humanity's scientific understanding of the universe.

II. 0000007918 00000 n Accepted 1996 June 17, Dany Page and A. Sarmiento 1996 ApJ 473 1067, pulsars: general; stars: magnetic fields; stars: neutron; X-rays: stars. Generalrelativistic effects, i.e., redshift and lensing, are fully taken into account. Find out more. 0000009958 00000 n



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