Iron K-alpha Emission from a Decaying Magnetar Model of Gamma-Ray Bursts

Abstract

The recent report of X-ray Fe features in the afterglow of the gamma-ray burst GRB 991216 may provide important clues for identifying the nature of its progenitor and constraining the burst mechanism. We argue that the strong line emission can be attributed to the interaction of a continuing (but decaying) post-burst relativistic outflow from the central engine with the progenitor stellar envelope at distances less than a light-hour. Only a small mass of Fe is then required, which could have been readily produced by the star itself.

Ap.J. Letters, accepted; revised version with added comments on GRB 000214; aaspp4, 7 pages

References in corpus (2)

• Impulsive and Varying Injection in GRB Afterglows
• Observation of X-ray lines from a Gamma-Ray Burst (GRB991216): Evidence of Moving Ejecta from the Progenitor

Cited by in corpus (82)

• The Physics of Gamma-Ray Bursts
• Physical processes shaping GRB X-ray afterglow lightcurves: theoretical implications from the Swift XRT observations
• Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data
• Gamma-Ray Bursts: Progress, Problems & Prospects
• Gamma-ray Burst Afterglow with Continuous Energy Injection: Signature of a Highly-Magnetized Millisecond Pulsar
• Theories of Gamma-Ray Bursts
• Relativistic Jets in Collapsars
• Events in the life of a cocoon surrounding a light, collapsar jet
• The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of A Strongly Magnetized Neutron Star
• Late internal shock model for bright X-ray flares in Gamma-ray Burst afterglows and GRB 011121
• The Signature of Supernova Ejecta Measured in the X-ray Afterglow of Gamma-Ray Burst 011211
• Gamma Ray Bursts from delayed collapse of neutron stars to quark matter stars
• Variabilities of Gamma-Ray Burst Afterglows: Long-acting Engine, Anisotropic Jet or Many Fluctuating Regions?
• Asymmetric Supernovae from Magneto-Centrifugal Jets
• Relativistic Wind Bubbles and Afterglow Signatures
• Efficiency Crisis of Swift Gamma-Ray Bursts with Shallow X-ray Afterglows: Prior Activity or Time-Dependent Microphysics?
• Probing the environment in Gamma-ray bursts: the case of an X-ray precursor, afterglow late onset and wind vs constant density profile in GRB011121 and GRB011211
• Optical Flashes and Very Early Afterglows in Wind Environments
• Multi-Wavelength Observations of GRB 050820A: An Exceptionally Energetic Event Followed from Start to Finish
• Evolution of a neutrino-cooled disc in Gamma-Ray Bursts
• Gamma-ray bursts, supernova kicks, and gravitational radiation
• The optical afterglow of GRB 000911: evidence for an associated supernova?
• Extinction of gamma-ray burst afterglows as a diagnostic of the location of cosmic star formation
• The X-ray Afterglows of GRB 020813 and GRB 021004 with Chandra HETGS: Possible Evidence for a Supernova Prior to GRB 020813
• The optical flare and afterglow light curve of GRB 050904 at redshift z=6.29
• Beam Models for Gamma-Ray Bursts Sources: Outflow Structure, Kinematics and Emission Mechanisms
• Delayed soft X-ray emission lines in the afterglow of GRB 030227
• The X-ray afterglows of gamma-ray bursts GRB 001025A and GRB 010220 observed with XMM-Newton
• Outshining the quasars at reionisation: The X-ray spectrum and lightcurve of the redshift 6.29 Gamma-Ray Burst GRB050904
• Soft X-ray emission lines in the afterglow spectrum of GRB 011211:- a detailed XMM-Newton analysis
• On the structures in the afterglow peak emission of gamma ray bursts
• Realistic analytic model for the prompt and high latitude emission in GRBs
• On the Early Time X-ray Spectra of Swift Afterglows I: Evidence for Anomalous Soft X-ray Emission
• On the absorption feature in the prompt X-ray spectrum of GRB 990705
• Line Searches in Swift X-ray Spectra
• The Optical/NIR afterglow of GRB 111209A: Complex yet not Unprecedented
• Multiple X-ray reflection from ionized slabs
• Explosive Nucleosynthesis in GRB Jets Accompanied by Hypernovae
• Iron K-alpha Emission from X-ray Reflection: Predictions for Gamma-Ray Burst Models
• When Do Internal Shocks End and External Shocks Begin? Early-Time Broadband Modelling of GRB 051111
• Fe Kαemission from photoionized slabs: the impact of the iron abundance
• Small-scale variations in the radiating surface of the GRB 011211 jet
• Soft X-ray emission lines in the early afterglow of gamma-ray bursts
• A Search for Discrete X-ray Spectral Features in a Sample of Bright Gamma-ray Burst Afterglows
• A Failed Gamma-Ray Burst with Dirty Energetic Jets Spirited Away? New Implications for the GRB-SN Connection from Supernova 2002ap
• High Resolution Grating Spectroscopy of GRB 020405 with CHANDRA LETGS
• GRB 060607A: A GRB with Bright Asynchronous Early $X$-ray and Optical Emissions
• The 6.7 keV KALPHA complex of He-like iron in transient plasmas
• Identifying young gamma-ray burst fossils
• Swift multi-wavelength observations of the bright flaring burst GRB051117A
• Pre-Existing Superbubbles as the Sites of Gamma-Ray Bursts
• Precursor Plerionic Activity and High Energy Gamma-Ray Emission in the Supranova Model of Gamma-Ray Bursts
• A study of the Galactic star forming region IRAS 02593+6016 / S 201 in infrared and radio wavelengths
• Probing GRB environments with time variability: ULTRASPEC fast imaging of GRB 080210
• Iron K Lines from Gamma Ray Bursts
• The long-active afterglow of GRB 210204A: Detection of the most delayed flares in a Gamma-Ray Burst
• X-ray flares following short gamma-ray bursts from shock heating of binary stellar companions
• Gamma-ray bursts as X-ray depth-gauges of the Universe
• Broad and shifted iron-group emission lines in gamma-ray bursts as tests of the hypernova scenario
• Late X-ray flares from the interaction of a reverse shock with a stratified ejecta in GRB afterglows: simulations on a moving mesh
• Non-Equilibrium Ionization States of GRB Environments
• X-ray spectral diagnostics of the immediate environment of GRB 991216
• Cerenkov Line Emission as a Possible Mechanism of X-ray Lines in Gamma-ray Bursts
• High Resolution Gratings Spectroscopy of GRBs 030382 and 041006 with Chandra LETGS
• On the X-ray lines in the afterglows of GRBs
• Gamma-ray bursts and other sources of giant lightning discharges in protoplanetary systems
• Detectability of GRB Iron Lines by Swift, Chandra and XMM
• Gamma Ray Bursts Cook Book I: Formulation
• The X-ray emission lines in GRB afterglows: the evidence for the two-component jet model
• Delayed Nickel Decay in Gamma Ray Bursts
• Late Engine Activity of GRB 161017A Revealed by Early Optical Observations
• Reconsidering the origin of the X-ray emission lines in GRB 011211
• HETE-2 Observations of the X-Ray Flash XRF 040916
• A New Model for Iron Emission Lines and Re-Burst in GRB X-Ray Afterglows
• High energy neutrinos from fast spinning magnetars
• A fireworks model for Gamma-Ray Bursts
• Can the Bump be Observed in the Early Afterglow of GRBS with X-Ray Line Emission Features?
• Gamma-ray burst: probe of a black hole
• Possible geometries of afterglow generation in the gamma-ray burst GRB990705
• X-ray Lines in Gamma-ray Bursts and Cerenkov Line Mechanism
• A lower occurrence rate of bright X-ray flares in SN-GRBs than $z<1$ GRBs: evidence of energy partitions?
• X-Ray Lines and Absorption Edges in GRBs and Their Afterglows