Enhanced X-ray Emission Coinciding with Giant Radio Pulses from the Crab Pulsar

Abstract

Giant radio pulses (GRPs) are sporadic bursts emitted by some pulsars, lasting a few microseconds. GRPs are hundreds to thousands of times brighter than regular pulses from these sources. The only GRP-associated emission outside radio wavelengths is from the Crab Pulsar, where optical emission is enhanced by a few percent during GRPs. We observed the Crab Pulsar simultaneously at X-ray and radio wavelengths, finding enhancement of the X-ray emission by $3.8\pm 0.7\%$ (a 5.4$\sigma$ detection) coinciding with GRPs. This implies that the total emitted energy from GRPs is tens to hundreds of times higher than previously known. We discuss the implications for the pulsar emission mechanism and extragalactic fast radio bursts.

63 pages, 23 figures, 7 Tables. Published in Science

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Cited by in corpus (14)

• Coherent curvature radiation: maximum luminosity and high-energy emission
• In-orbit timing calibration of the Insight-Hard X-ray Modulation Telescope
• Resolving the Emission Regions of the Crab Pulsar's Giant Pulses II. Evidence for Relativistic Motion
• Discovery of the first anti-glitch event in the rotation-powered pulsar PSR B0540-69
• Detection of a bright burst from the repeating FRB 20201124A at 2 GHz
• Improved Measurements of the IXPE Crab Polarization
• NinjaSat: Astronomical X-ray CubeSat Observatory
• Single Pulse Variability in Gamma-ray Pulsars
• Optical photon-counting observation of the Crab pulsar with Kanata telescope using prototype IMONY
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• Constraining the nature of FRB-emitting bunches via photo-magnetic cascades
• Extreme Transients in Gamma Rays
• One-week optical observations of pulsed emission from the Crab pulsar with IMONY on the 3.8 m Seimei telescope
• Calibrating the photometric performance of a high-time-resolution photon-counting imager for optical astronomy