GRB 090510

GRB 090510
Name	GRB 090510
Epoch	J2000
Redshift	0.903
Type	Gamma-ray burst
Discovered	2009-05-10

GRB 090510 is a short-duration, high-energy gamma-ray burst detected on 10 May 2009 that produced a brief, intense flash of gamma rays and an extended high-energy tail. The event was observed by multiple observatories and satellites, resulting in detailed temporal, spectral, and localization data that informed models of compact-object mergers, relativistic jets, and tests of fundamental physics. Observations linked the burst to a faint host galaxy at moderate redshift, enabling cross-comparisons with other short gamma-ray bursts and multiwavelength transient catalogs.

Discovery and observations

The burst was discovered by the Italian Space Agency mission AGILE, the National Aeronautics and Space Administration mission Fermi, and the National Aeronautics and Space Administration mission Swift, with complementary detections from the Konus-Wind experiment, the INTEGRAL observatory, and the Suzaku satellite. Ground-based follow-up included rapid optical imaging from facilities such as the Very Large Telescope, the Gemini Observatory, the Canada–France–Hawaii Telescope, and the Delta Optical Thin-film Telescope Network alongside radio searches with the Very Large Array and millimeter observations with the Atacama Large Millimeter/submillimeter Array. Localization benefited from triangulation involving the InterPlanetary Network (IPN), enabling rapid dissemination through the Gamma-ray Coordinates Network. Trigger notices were handled by teams at the NASA Goddard Space Flight Center, the European Space Agency, and collaborating institutions at the Max Planck Institute for Extraterrestrial Physics.

Prompt emission

The prompt phase exhibited a sub-second spike recorded by LAT, the GBM, and Konus-Wind, with spectral fits performed by researchers at the University of California, Berkeley, Stanford University, and the Harvard–Smithsonian Center for Astrophysics. Time-resolved spectroscopy revealed a hard spectrum well described by models used by teams from the University of Leicester, Los Alamos National Laboratory, and the University of Amsterdam. Analysis groups from the Kavli Institute for Particle Astrophysics and Cosmology and the European Southern Observatory contrasted Band-function fits with synchrotron shock models advanced by theorists at the Princeton University and the California Institute of Technology. The burst’s temporal structure motivated comparisons with historical short bursts cataloged by the BATSE instrument on the Compton Gamma Ray Observatory and statistical studies carried out at the Max Planck Institute for Astrophysics.

Afterglow and multiwavelength follow-up

The X-ray afterglow was monitored by Swift XRT teams based at the Pennsylvania State University and the University of Leicester, while ultraviolet and optical follow-up involved the Swift UVOT, observers at the European Southern Observatory, and teams from Carnegie Observatories. Optical spectroscopy to determine the redshift was performed by astronomers affiliated with the Gemini Observatory and the Keck Observatory, supported by data analysis groups at the Space Telescope Science Institute. Radio follow-up by the Karl G. Jansky Very Large Array and flux limits from the Australia Telescope Compact Array were reported by researchers at the National Radio Astronomy Observatory and the CSIRO Astronomy and Space Science division. Multiwavelength modeling drew on methods developed at the Las Cumbres Observatory, the University of Chicago, and the Ohio State University to constrain jet opening angles and energetics.

Host galaxy and redshift

Spectroscopic observations identified a host galaxy at redshift z ≈ 0.903, with spectroscopy and imaging contributed by teams from the Gemini Observatory, the Keck Observatory, and the Very Large Telescope. Host characterization leveraged photometric data reduction pipelines from the Sloan Digital Sky Survey consortium and stellar population synthesis models used by researchers at the Max Planck Institute for Astronomy and the Institute of Astronomy, Cambridge. The host’s faint magnitude and location in deep imaging were compared with host samples compiled by the Gamma-Ray Burst Host Studies teams and surveys like the COSMOS and GOODS fields, with environment analysis referencing catalogs maintained by the European Southern Observatory and the Hubble Space Telescope archive at the Space Telescope Science Institute.

Progenitor and theoretical interpretation

The short duration and spectral hardness prompted interpretation as a compact binary merger, with progenitor models developed at the Caltech and Princeton University groups invoking neutron star–neutron star or neutron star–black hole coalescence described in simulations from the Max Planck Institute for Gravitational Physics and the Kavli Institute for Theoretical Physics. Numerical relativity teams at the Center for Computational Relativity and Gravitation and the Albert Einstein Institute provided merger waveforms that informed models linking short gamma-ray bursts to gravitational-wave sources targeted by the LIGO Scientific Collaboration and the VIRGO collaboration. Jet launching and magnetohydrodynamic scenarios were advanced by investigators at the University of Oxford, the University of Amsterdam, and the Princeton Plasma Physics Laboratory, while population synthesis comparisons referenced studies from the Harvard–Smithsonian Center for Astrophysics.

High-energy photons and constraints on physics

The detection of GeV photons by Fermi LAT teams allowed stringent constraints on Lorentz invariance violation explored by researchers at CERN, Perimeter Institute for Theoretical Physics, and the Pierre Auger Observatory collaboration. Time-of-flight analyses relied on techniques from the Max Planck Institute for Nuclear Physics and theoretical input from the Institute for Advanced Study, with limits compared to earlier bounds from the MAGIC telescope and the H.E.S.S. collaboration. High-energy spectral components motivated discussion among particle astrophysics groups at the Lawrence Berkeley National Laboratory, SLAC National Accelerator Laboratory, and the University of Tokyo about photon propagation, opacity from the extragalactic background light catalogs maintained by the Fermi Science Support Center, and constraints relevant to models proposed by the European Organization for Nuclear Research.

Category:Gamma-ray bursts