Comparison of the Characteristics of Magnetars Born in Death of Massive Stars and Merger of Compact Objects With {\em Swift} Gamma-Ray Burst Data

Abstract

Assuming that the shallow-decaying phase in the early X-ray lightcurves of gamma-ray bursts (GRBs) is attributed to the dipole radiations (DRs) of a newborn magnetar, we present a comparative analysis for the magnetars born in death of massive stars and merger of compact binaries with long and short GRB (lGRB and sGRB) data observed with the {\em Swift} mission. We show that the typical braking index ($n$) of the magnetars is $\sim 3$ in the sGRB sample, and it is $\sim 4$ for the magnetars in the lGRB sample. Selecting a sub-sample of the magnetars whose spin-down is dominated by DRs ($n\lesssim 3$) and adopting a universal radiation efficiency of $0.3$, we find that the typical magnetic field strength ($B_p$) is $10^{16}$ G {\em vs.} $10^{15}$ G and the typical initial period ($P_0$) is $\sim 20$ ms {\em vs.} $2$ ms for the magnetars in the sGRBs {\em vs.} lGRBs. They follow the same relation between $P_0$ and the isotropic GRB energy as $P_0\propto E_{\mathrm{jet}}^{-0.4}$. We also extend our comparison analysis to superluminous supernovae (SLSNe) and stable pulsars. Our results show that a magnetar born in merger of compact stars tends to have a stronger $B_p$ and a longer $P_0$ by about one order of magnitude than that born in collapse of massive stars. Its spin-down is dominated by the magnetic DRs as old pulsars, being due to its strong magnetic field strength, whereas the early spin-down of magnetars born in massive star collapse is governed by both the DRs and gravitational wave (GW) emission. A magnetar with a faster rotation speed should power a more energetic jet, being independent of its formation approach.

arXiv comment10 pages, 2 tables, 7 figures. Published in MNRAS

References in corpus (85)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
• The Supernova -- Gamma-Ray Burst Connection
• The Physics of Neutron Stars
• Physical processes shaping GRB X-ray afterglow lightcurves: theoretical implications from the Swift XRT observations
• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data
• Supernova Light Curves Powered by Young Magnetars
• The Proto-Magnetar Model for Gamma-Ray Bursts
• Swift detects a remarkable gamma-ray burst, GRB 060614, that introduces a new classification scheme
• The mass ejection from the merger of binary neutron stars
• Bright Supernovae from Magnetar Birth
• Signatures of magnetar central engines in short GRB lightcurves
• The missing link: Merging neutron stars naturally produce jet-like structures and can power short Gamma-Ray Bursts
• Detecting Bimodality in Astronomical Datasets
• No supernovae associated with two long-duration gamma ray bursts
• Discerning the physical origins of cosmological Gamma-ray bursts based on multiple observational criteria: the cases of z=6.7 GRB 080913, z=8.3 GRB 090423, and some short/hard GRBs
• An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova
• Short Duration Gamma-Ray Bursts with Extended Emission from Proto-Magnetar Spin-Down
• The gamma-ray burst GRB060614 requires a novel explosive process
• Merger of binary neutron stars to a black hole: Disk mass, short gamma-ray bursts, and quasinormal mode ringing
• X-Ray Flares from Postmerger Millisecond Pulsars
• An origin for short g-ray bursts unassociated with current star formation
• Maximum mass, moment of inertia and compactness of relativistic stars
• Gamma-Ray Bursts and Afterglows from Rotating Strange Stars and Neutron Stars
• A possible Macronova in the late afterglow of the `long-short' burst GRB 060614
• Swift observations of GRB 070110: an extraordinary X-ray afterglow powered by the central engine
• High Resolution Calculations of Merging Neutron Stars III: Gamma-Ray Bursts
• GRB Radiative Efficiencies Derived from the Swift Data: GRBs vs. XRFs, Long vs. Short
• A Comprehensive Analysis of the Swift/XRT Data: II. Diverse Physical Origins of the Shallow Decay Segment
• Gravitational waves and neutrino emission from the merger of binary neutron stars
• The magnetar model for Type I superluminous supernovae I: Bayesian analysis of the full multicolour light curve sample with MOSFiT
• The Millisecond Magnetar Central Engine in short GRBs
• Short GRBs with Extended Emission from Magnetar Birth: Jet Formation and Collimation
• The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of A Strongly Magnetized Neutron Star
• Formation of Stable Magnetars from Binary Neutron Star Mergers
• Three-dimensional GRMHD simulations of neutrino-cooled accretion disks from neutron star mergers
• A Comprehensive Analysis of Swift/XRT Data: III. Jet Break Candidates in X-ray and Optical Afterglow Lightcurves
• GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission
• Collapse of a Rotating Supermassive Star to a Supermassive Black Hole: Fully Relativistic Simulations
• On the diversity of super-luminous supernovae: ejected mass as the dominant factor
• The braking index of PSR J1734-3333 and the magnetar population
• A test of the millisecond magnetar central engine model of GRBs with Swift data
• Choked Jets and Low-Luminosity Gamma-Ray Bursts as Hidden Neutrino Sources
• The Swift Burst Analyser I: BAT and XRT spectral and flux evolution of Gamma Ray Bursts
• Magnetized Relativistic Jets and Long-Duration GRBs from Magnetar Spindown during Core-Collapse Supernovae
• Evolution of magnetized, differentially rotating neutron stars: Simulations in full general relativity
• Can X-ray emission powered by a spinning-down magnetar explain some GRB light curve features?
• Magnetorotational instability in relativistic hypermassive neutron stars
• Constraints on binary neutron star merger product from short GRB observations
• SN 2015bn: a detailed multi-wavelength view of a nearby superluminous supernova
• Nuclear Equation of State from Observations of Short Gamma-Ray Burst Remnants
• Constraining properties of GRB magnetar central engines using the observed plateau luminosity and duration correlation
• Can magnetar spin-down power extended emission in some short GRBs?
• Producing Magnetar Magnetic Fields in the Merger of Binary Neutron Stars
• Observationally constraining gravitational wave emission from short gamma-ray burst remnants
• Magnetically driven winds from differentially rotating neutron stars and X-ray afterglows of short gamma-ray bursts
• Effects of Fall-Back Accretion on Proto-Magnetar Outflows in Gamma-Ray Bursts and Superluminous Supernovae
• A High Braking Index for a Pulsar
• On the nature of Hydrogen-rich Superluminous Supernovae
• Zooming In on the Progenitors of Superluminous Supernovae With the HST
• A Hubble Space Telescope Survey of the Host Galaxies of Superluminous Supernovae
• Gamma-Ray Bursts: Afterglow Implications, Progenitor Clues and Prospects
• The Volumetric Rate of Superluminous Supernovae at z~1
• The Fate of Neutron Star Binary Mergers
• Signature of gravitational radiation in afterglow of short Gamma-Ray Bursts?
• Superluminous Supernovae Powered by Magnetars: Late-time Light Curves and Hard Emission Leakage
• Gravitational waves from massive magnetars formed in binary neutron star mergers
• A statistical study of super-luminous supernovae in the magnetar engine model and implications for their connection with gamma-ray bursts and hypernovae
• The braking index of millisecond magnetars
• The role of newly born magnetars in gamma-ray burst X-ray afterglow emission: Energy injection and internal emission
• The Konus-Wind catalog of gamma-ray bursts with known redshifts. II. Waiting mode bursts simultaneously detected by Swift/BAT
• Three dimensional evolution of differentially rotating magnetized neutron stars
• The unusual glitch recoveries of the high magnetic field pulsar J1119$-$6127
• Are Super-Luminous supernovae and Long GRBs produced exclusively in young dense star clusters?
• Electromagnetic Emission from newly-born Magnetar Spin-Down by Gravitational-Wave and Magnetic Dipole Radiations
• A Monte Carlo Approach to Magnetar-powered Transients: I. Hydrogen-deficient Superluminous Supernovae
• Determining the efficiency of converting magnetar spin-down energy into gamma-ray burst X-ray afterglow emission and its possible implications
• Taking stock of SLSN and LGRB host galaxy comparison using a complete sample of LGRBs
• The Braking Index of a Radio-quiet Gamma-ray Pulsar
• Constraining the Braking Index and Energy Partition of Magnetar spindown with {\em Swift}/XRT data
• The First Day in the Life of a Magnetar: Evolution of the Inclination Angle, Magnetic Dipole Moment and Braking Index of Millisecond Magnetars During Gamma-Ray Burst Afterglows
• Magnetar as Central Engine of Gamma-Ray Bursts: Central Engine-Jet Connection, Wind-Jet Energy Partition, and Origin of Some Ultra-Long Bursts
• The radiative efficiency of relativistic jet and wind: A case study of GRB 070110
• Extended Emission of Short Gamma-Ray Bursts

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