0000000000477806

AUTHOR

M. J. Page

showing 4 related works from this author

GRB 050410 and GRB 050412: are they really dark gamma-ray bursts?

2007

We present a detailed analysis of the prompt and afterglow emission of GRB 050410 and GRB 050412 detected by Swift for which no optical counterpart was observed. The 15-150 keV energy distribution of the GRB 050410 prompt emission shows a peak energy at 53 keV. The XRT light curve of this GRB decays as a power law with a slope of alpha=1.06+/-0.04. The spectrum is well reproduced by an absorbed power law with a spectral index Gamma_x=2.4+/-0.4 and a low energy absorption N_H=4(+3;-2)x10^21 cm^(-2) which is higher than the Galactic value. The 15-150 keV prompt emission in GRB 050412 is modelled with a hard (Gamma=0.7+/-0.2) power law. The XRT light curve follows a broken power law with the f…

PhysicsSpectral indexAstrophysics::High Energy Astrophysical PhenomenaExtrapolationAstronomy and AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsLight curvePower lawAfterglowInterstellar mediumSpace and Planetary ScienceGamma-ray burstAbsorption (electromagnetic radiation)Astrophysics::Galaxy Astrophysics
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The x-ray microcalorimeter spectrometer onboard Athena

2012

Trabajo presentado a la conferencia: "Space Telescopes and Instrumentation: Ultraviolet to Gamma Ray" celebrada en Amsterdam (Holanda) el 1 de julio de 2012.-- et al.

PhysicsSpacecraftSpectrometerCalorimeter (particle physics)business.industryDetectorAstrophysics::Instrumentation and Methods for AstrophysicsMissionslaw.inventionX-rayTelescopeX-ray missions micro-calorimeter AthenaOpticsCardinal pointSettore FIS/05 - Astronomia E AstrofisicaMicro-calorimeterAthena; Micro-calorimeter; Missions; X-raylawAthenaTransition edge sensorSpectral resolutionbusiness
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Swift Observations of GRB 070110: An Extraordinary X-Ray Afterglow Powered by the Central Engine

2007

We present a detailed analysis of Swift multi-wavelength observations of GRB 070110 and its remarkable afterglow. The early X-ray light curve, interpreted as the tail of the prompt emission, displays a spectral evolution already seen in other gamma-ray bursts. The optical afterglow shows a shallow decay up to ~2 d after the burst, which is not consistent with standard afterglow models. The most intriguing feature is a very steep decay in the X-ray flux at ~20 ks after the burst, ending an apparent plateau. The abrupt drop of the X-ray light curve rules out an external shock as the origin of the plateau in this burst and implies long-lasting activity of the central engine. The temporal and s…

PhysicsSwiftAstrophysics::High Energy Astrophysical PhenomenaSpectral propertiesAstrophysics (astro-ph)X-rayPhase pointFOS: Physical sciencesGamma Rays: Bursts; X-rays: individual (GRB 070110)Astronomy and AstrophysicsAstrophysicsAstrophysicsLight curveAfterglowGamma Rays: BurstsSpace and Planetary ScienceMillisecond pulsarGamma-ray burstcomputerX-rays: individual (GRB 070110)computer.programming_language
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GRB 061121: Broadband Spectral Evolution through the Prompt and Afterglow Phases of a Bright Burst

2007

Swift triggered on a precursor to the main burst of GRB 061121 (z=1.314), allowing observations to be made from the optical to gamma-ray bands. Many other telescopes, including Konus-Wind, XMM-Newton, ROTSE and the Faulkes Telescope North, also observed the burst. The gamma-ray, X-ray and UV/optical emission all showed a peak ~75s after the trigger, although the optical and X-ray afterglow components also appear early on - before, or during, the main peak. Spectral evolution was seen throughout the burst, with the prompt emission showing a clear positive correlation between brightness and hardness. The Spectral Energy Distribution (SED) of the prompt emission, stretching from 1eV up to 1MeV…

PhysicsBrightnessX-rays: individual (GRB 061121)Astrophysics::High Energy Astrophysical PhenomenaMolecular cloudAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsRest frameAstrophysicsSpectral lineAfterglowlaw.inventionGamma Rays: BurstsTelescopeGamma Rays: Bursts; X-rays: individual (GRB 061121)Space and Planetary SciencelawSpectral energy distributionGamma-ray burstThe Astrophysical Journal
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