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Multipolar Electromagnetic Emission of Newborn Magnetar
High Energy Astrophysical Phenomena · Submitted 14 Apr 2024
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show that the spin-down luminosity from multipoles can well explain the majority of Gamma-Ray Bursts (GRBs) afterglows, from the plateau starting at several hundred seconds till the normal decay phase lasting for many years.
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The abstract, sentence by sentence
It is generally recognized that the electromagnetic multipolar emission from magnetars can be used to explain radiation from Soft Gamma Repeaters (SGRs) or Anomalous X-ray Pulsars (AXPs), but they have little impact on the spindown of magnetars. We here present a comprehensive analytical solution for the neutron star multipolar electromagnetic fields and their associated expected luminosities. We find that for newborn millisecond magnetars, the spin-down luminosity from higher multipolar components can match or even exceed that from the dipole component. Such high-intensity radiation will undoubtedly affect related astrophysical phenomena at the birth of a magnetar. We show that the spin-down luminosity from multipoles can well explain the majority of Gamma-Ray Bursts (GRBs) afterglows, from the plateau starting at several hundred seconds till the normal decay phase lasting for many years. The fitted magnetar parameters for GRB afterglows are all typical values, with spins in the millisecond range and magnetic field strengths in the order of $10^{14} - 10^{15}$ Gauss. Our results in turn, provide support for the hypothesis that GRBs originate from the birth of magnetars with a few millisecond period, thus deepening our understanding of the complex magnetic field structure and the equation of state of magnetars.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | It is generally recognized that the electromagnetic multipolar emission from magnetars can be used to explain radiation from Soft Gamma Repeaters (SGRs) or Anomalous X-ray Pulsars (AXPs), but they have little impact on the spindown of magnetars. | background 0.87 | 0.04 | 0.04 | asserted 0.79 |
| s1 | We here present a comprehensive analytical solution for the neutron star multipolar electromagnetic fields and their associated expected luminosities. | contribution 0.96 | 0.93 | 0.06 | asserted 0.91 |
| s2 | We find that for newborn millisecond magnetars, the spin-down luminosity from higher multipolar components can match or even exceed that from the dipole component. | result 1.00 | 0.96 | 0.47 | asserted 0.96 |
| s3 | Such high-intensity radiation will undoubtedly affect related astrophysical phenomena at the birth of a magnetar. | interpretation 0.99 | 0.26 | 0.08 | asserted 0.92 |
| s4 | We show that the spin-down luminosity from multipoles can well explain the majority of Gamma-Ray Bursts (GRBs) afterglows, from the plateau starting at several hundred seconds till the normal decay phase lasting for many years. | result 0.96 | 0.89 | 0.52 | asserted 0.99 |
| s5 | The fitted magnetar parameters for GRB afterglows are all typical values, with spins in the millisecond range and magnetic field strengths in the order of $10^{14} - 10^{15}$ Gauss. | result 0.99 | 0.89 | 0.09 | asserted 1.00 |
| s6 | Our results in turn, provide support for the hypothesis that GRBs originate from the birth of magnetars with a few millisecond period, thus deepening our understanding of the complex magnetic field structure and the equation of state of magnetars. | interpretation 1.00 | 0.82 | 0.39 | hedged possibility 0.53 |
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Original abstract
It is generally recognized that the electromagnetic multipolar emission from magnetars can be used to explain radiation from Soft Gamma Repeaters (SGRs) or Anomalous X-ray Pulsars (AXPs), but they have little impact on the spindown of magnetars. We here present a comprehensive analytical solution for the neutron star multipolar electromagnetic fields and their associated expected luminosities. We find that for newborn millisecond magnetars, the spin-down luminosity from higher multipolar components can match or even exceed that from the dipole component. Such high-intensity radiation will undoubtedly affect related astrophysical phenomena at the birth of a magnetar. We show that the spin-down luminosity from multipoles can well explain the majority of Gamma-Ray Bursts (GRBs) afterglows, from the plateau starting at several hundred seconds till the normal decay phase lasting for many years. The fitted magnetar parameters for GRB afterglows are all typical values, with spins in the millisecond range and magnetic field strengths in the order of $10^{14} - 10^{15}$ Gauss. Our results in turn, provide support for the hypothesis that GRBs originate from the birth of magnetars with a few millisecond period, thus deepening our understanding of the complex magnetic field structure and the equation of state of magnetars.
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References
How the literature uses it
3 arXiv papers cite this in 4 sentences
Papers citing it · 2 sentences without a confident label
Cites it as background 2 papers
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Millisecond magnetars have long been discussed as central engines of energetic transients, including gamma ray bursts (GRBs) and relativistic outflows [ref] .
Energy Loss of Newborn Magnetars by Schwinger Process · Introduction · 0.91
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In the magnetar case, the high magnetic field separates the charges around the neutron star and creates a multipole charge distribution on the surface of a spinning NS, therefore an electromagnetic emission arises [ref] .
The multiwavelength correlations quest for central engines of GRB plateaus: magnetar vs black hole spin-down · The LC with energy injection from the central engine · 0.81
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