We report on X-ray and gamma-ray observations of the millisecond pulsar
B1937+21 taken with the Chandra X-ray Observatory, XMM-Newton, and the Fermi
Large Area Telescope. The pulsar X-ray emission shows a purely non-thermal
spectrum with a hard photon index of 0.9+/-0.1, and is nearly 100\% pulsed. We
found no evidence of varying pulse profile with energy as previously claimed.
We also analyzed 5.5 yr of Fermi survey data and obtained much improved
constraints on the pulsar's timing and spectral properties in gamma-rays. The
pulsed spectrum is adequately fitted by a simple power-law with a photon index
of 2.38+/-0.07. Both the gamma-ray and X-ray pulse profiles show similar
two-peak structure and generally align with the radio peaks. We found that the
aligned profiles and the hard spectrum in X-rays seem to be common properties
among millisecond pulsars with high magnetic fields at the light cylinder. We
discuss a possible physical scenario that could give rise to these features.
%0 Generic
%1 citeulike:13165831
%A Ng, C. Y.
%A Takata, J.
%A Leung, G. C. K.
%A Cheng, K. S.
%A Philippopoulos, P.
%D 2014
%K imported
%T High-Energy Emission of the First Millisecond Pulsar
%U http://arxiv.org/abs/1405.2148
%X We report on X-ray and gamma-ray observations of the millisecond pulsar
B1937+21 taken with the Chandra X-ray Observatory, XMM-Newton, and the Fermi
Large Area Telescope. The pulsar X-ray emission shows a purely non-thermal
spectrum with a hard photon index of 0.9+/-0.1, and is nearly 100\% pulsed. We
found no evidence of varying pulse profile with energy as previously claimed.
We also analyzed 5.5 yr of Fermi survey data and obtained much improved
constraints on the pulsar's timing and spectral properties in gamma-rays. The
pulsed spectrum is adequately fitted by a simple power-law with a photon index
of 2.38+/-0.07. Both the gamma-ray and X-ray pulse profiles show similar
two-peak structure and generally align with the radio peaks. We found that the
aligned profiles and the hard spectrum in X-rays seem to be common properties
among millisecond pulsars with high magnetic fields at the light cylinder. We
discuss a possible physical scenario that could give rise to these features.
@misc{citeulike:13165831,
abstract = {{We report on X-ray and gamma-ray observations of the millisecond pulsar
B1937+21 taken with the Chandra X-ray Observatory, XMM-Newton, and the Fermi
Large Area Telescope. The pulsar X-ray emission shows a purely non-thermal
spectrum with a hard photon index of 0.9+/-0.1, and is nearly 100\% pulsed. We
found no evidence of varying pulse profile with energy as previously claimed.
We also analyzed 5.5 yr of Fermi survey data and obtained much improved
constraints on the pulsar's timing and spectral properties in gamma-rays. The
pulsed spectrum is adequately fitted by a simple power-law with a photon index
of 2.38+/-0.07. Both the gamma-ray and X-ray pulse profiles show similar
two-peak structure and generally align with the radio peaks. We found that the
aligned profiles and the hard spectrum in X-rays seem to be common properties
among millisecond pulsars with high magnetic fields at the light cylinder. We
discuss a possible physical scenario that could give rise to these features.}},
added-at = {2019-03-25T08:20:55.000+0100},
archiveprefix = {arXiv},
author = {Ng, C. Y. and Takata, J. and Leung, G. C. K. and Cheng, K. S. and Philippopoulos, P.},
biburl = {https://www.bibsonomy.org/bibtex/2efd116b9233f5d2cd9d962f288aff528/ericblackman},
citeulike-article-id = {13165831},
citeulike-linkout-0 = {http://arxiv.org/abs/1405.2148},
citeulike-linkout-1 = {http://arxiv.org/pdf/1405.2148},
day = 9,
eprint = {1405.2148},
interhash = {407c54345644596e2b53309cc5805261},
intrahash = {efd116b9233f5d2cd9d962f288aff528},
keywords = {imported},
month = may,
posted-at = {2014-05-12 05:50:20},
priority = {2},
timestamp = {2019-03-25T08:20:55.000+0100},
title = {{High-Energy Emission of the First Millisecond Pulsar}},
url = {http://arxiv.org/abs/1405.2148},
year = 2014
}