物理性质(NATURE PHYSICS)2013-09-05 2:57 AM

A highly resistive layer within the crust of X-ray pulsars limits their spin periods : Nature Physics : Nature Publishing Group

The lack of isolated X-ray pulsars with spin periods longer than 12 s raises the question of where the population of evolved high-magnetic-field neutron stars has gone. Unlike canonical radiopulsars, X-ray pulsars are not subject to physical limits to the emission mechanism nor observational biases against the detection of sources with longer periods. Here we show that a highly resistive layer in the innermost part of the crust of neutron stars naturally limits the spin period to a maximum value of about 10–20 s. This highly resistive layer is expected if the inner crust is amorphous and heterogeneous in nuclear charge, possibly owing to the existence of a nuclear ‘pasta’ phase. Our findings suggest that the maximum period of isolated X-ray pulsars may be the first observational evidence for an amorphous inner crust, whose properties can be further constrained by future X-ray timing missions combined with more detailed models.

KEYWORDS

SHARE & LIKE

COMMENTS

ABOUT THE AUTHOR

物理性质(NATURE PHYSICS)

0 Following 3 Fans 0 Projects 67 Articles

SIMILAR ARTICLES

Strong-field phenomena in optical nanostructures have enabled the integration of nanophotonics, plasmonics and attosecond spectroscopy. For example, tr

Read More

The lack of isolated X-ray pulsars with spin periods longer than 12 s raises the question of where the population of evolved high-magnetic-field neutro

Read More

The lack of isolated X-ray pulsars with spin periods longer than 12 s raises the question of where the population of evolved high-magnetic-field neutro

Read More

Abstract: The observation of new physics events with large missing transverse energy at the LHC would potentially serve as evidence for the direct prod

Read More

Abstract: The observation of new physics events with large missing transverse energy at the LHC would potentially serve as evidence for the direct prod

Read More

The observation of new physics events with large missing transverse energy at the LHC would potentially serve as evidence for the direct production of

Read More

The observation of new physics events with large missing transverse energy at the LHC would potentially serve as evidence for the direct production of

Read More

Abstract The first quantum correction to the IIA string effective action arises at the eight-derivative level and takes the schematic form . This corr

Read More

Abstract The first quantum correction to the IIA string effective action arises at the eight-derivative level and takes the schematic form . This corr

Read More

Abstract We investigate the holographic Renormalization Group (RG) flows and the critical phenomena that take place in the QFTʼs dual to the d-dimensi

Read More