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Related papers: Pulse Frequency Fluctuations of Magnetars

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For space-borne gravitational wave detectors,such as LISA and TianQin ,the disturbance caused by the coupling of test masses and the external magnetic fields is one of the main sources of the residual acceleration noise. Although the…

Instrumentation and Detectors · Physics 2025-03-05 Yuanyang Yu , Butian Zhang , Shengxin Lin , Jianping Liang , Donghua Pan , Shun Wang , Ze-Bing Zhou

Young radio pulsars shed vast amounts of rotational energy, sometimes as high as 100,000 times the total energy loss rate from the sun. The wide range of phenomena resulting from this energy loss include: glitches, timing noise, jets, bow…

Astrophysics · Physics 2007-05-23 J. F. Bell

I summarize the recent advances in our understanding of the Soft Gamma Repeaters: in particular their spin behavior, persistent emission and hyper-Eddington outbursts. The giant flares on 5 March 1979 and 27 August 1998 provide compelling…

Astrophysics · Physics 2007-05-23 Christopher Thompson

We present an analysis of highly magnetized neutron stars "magnetars", in search for high frequency oscillations in the recurrent emission from the soft gamma repeater SGR 1806-20, and we discuss the physical interpretation of these…

High Energy Astrophysical Phenomena · Physics 2010-08-25 Ahmed M. El-Mezeini

Magnetars are a subclass of neutron stars whose intense soft-gamma-ray bursts and quiescent X-ray emission are believed to be powered by the decay of a strong internal magnetic field. We reanalyze neutrino emission in such stars in the…

Astrophysics · Physics 2009-11-11 Mario Riquelme , Andreas Reisenegger , Olivier Espinosa , Claudio Dib

Pulsar timing arrays provide a unique means to detect nanohertz gravitational waves through long-term measurements of pulse arrival times from an ensemble of millisecond pulsars. After years of observations, some timing array pulsars have…

High Energy Astrophysical Phenomena · Physics 2020-07-30 Boris Goncharov , Xing-Jiang Zhu , Eric Thrane

The observed correlations, between the characteristic ages and dipole surface magnetic field strengths of all pulsars, can be well explained by magnetic field decay with core temperatures of $~2\times10^{8}$ K, $\sim2\times10^{7}$ K, and…

High Energy Astrophysical Phenomena · Physics 2011-10-19 Yi Xie , Shuang-Nan Zhang

The sensitivity of Pulsar Timing Arrays to gravitational waves depends on the noise present in the individual pulsar timing data. Noise may be either intrinsic or extrinsic to the pulsar. Intrinsic sources of noise will include rotational…

A model of fast radio bursts, which enlists young, short period extragalactic magnetars satisfying $B/P > 2 \times 10^{16}$~G~s$^{-1}$ (1~G = 1~statvolt~cm$^{-1}$) as the source, is proposed. When the parallel component $\bE_\parallel$ of…

High Energy Astrophysical Phenomena · Physics 2017-01-18 Richard Lieu

Anomalous X-ray Pulsars (AXPs) and Soft Gamma-Ray Repeaters (SGRs) are young neutron stars (NSs) characterized by high X-ray quiescent luminosities, outbursts, and, in the case of SGRs, sporadic giant flares. They are believed to be powered…

High Energy Astrophysical Phenomena · Physics 2012-03-23 Rosalba Perna , Jose A. Pons

Magnetars are neutron stars with extremely strong magnetic fields, frequently powering high-energy activity in X-rays. Pulsed radio emission following some X-ray outbursts have been detected (\citealt{Camilo2006,camilo2007a}), albeit its…

We report on the noise performance characteristics of magnetic sensors using both magnetic tunnel junction (MTJ) and giant magnetoresistance (GMR) elements. Each sensor studied has a notably different noise and detectivity. Of the sensors…

Materials Science · Physics 2021-02-24 J. E. Davies , J. D. Watts , J. Novotny , D. Huang , P. G. Eames

We report on simultaneous radio and X-ray observations of the radio-emitting magnetar 1E1547.0-5408 on 2009 January 25 and February 3, with the 64-m Parkes radio telescope and the Chandra and XMM-Newton X-ray observatories. The magnetar was…

High Energy Astrophysical Phenomena · Physics 2021-01-27 G. L. Israel , M. Burgay , N. Rea , P. Esposito , A. Possenti , S. Dall'Osso , L. Stella , M. Pilia , A. Tiengo , A. Ridnaia , A. Y. Lien , D. D. Frederiks , F. Bernardini

The recent massive measurements of pulsar frequency second derivatives have shown that they are 100-1000 times larger than expected for standard pulsar slowdown low. Moreover, the second derivatives as well as braking indices are even…

Astrophysics · Physics 2007-05-23 G. Beskin , A. Biryukov , S. Karpov

The Parkes Multibeam Survey led to the identification of a number of long-period radio pulsars with magnetic field well above the 'quantum critical field' of ~ 4.4x10^13 G (HBRPs). The HBRPs have similar spin parameters to magnetars, but…

Astrophysics · Physics 2007-05-23 N. Vranevsevic , R. N. Manchester , D. B. Melrose

Radio pulsars are often used as clocks in a wide variety of experiments. Imperfections in the clock, known as timing noise, have the potential to reduce the significance of, or even thwart e.g. the attempt to find a stochastic gravitational…

High Energy Astrophysical Phenomena · Physics 2019-06-26 Nakornping Namkham , Phrudth Jaroenjittichai , Simon Johnston

The prevailing view that magnetars' X-ray luminosities exceed their spin-down luminosities is based on the assumption that the decay with distance of the flux of the X-rays received from magnetars obeys the inverse-square law. The results…

High Energy Astrophysical Phenomena · Physics 2022-09-22 Houshang Ardavan

PSR J1119-6127 is a radio pulsar that behaved magnetar like bursts, and we performed a comprehensive investigation of this pulsar using the archival high-energy observations obtained after its outburst in 2016 July. After the 2016 outburst,…

High Energy Astrophysical Phenomena · Physics 2018-10-17 Lupin Chun-Che Lin , Hui-Hui Wang , Kwan-Lok Li , Jumpei Takata , Chin-Ping Hu , C. -Y. Ng , C. Y. Hui , A. K. H. Kong , Pak-Hin T. Tam , Paul K. H. Yeung

Using Chandra data taken on 2008 June, we detected pulsations at 2.59439(4) s in the soft gamma-ray repeater SGR 1627-41. This is the second measurement of the source spin period and allows us to derive for the first time a long-term…

High Energy Astrophysical Phenomena · Physics 2009-11-10 P. Esposito , M. Burgay , A. Possenti , R. Turolla , S. Zane , A. De Luca , A. Tiengo , G. L. Israel , F. Mattana , S. Mereghetti , M. Bailes , P. Romano , D. Götz , N. Rea
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