English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Violations of Lorentz invariance can lead to an energy-dependent vacuumdispersion of light, which results in arrival-time differences of photonsarising with different energies from a given transient source. In this work,direction-dependent dispersion constraints are obtained on nonbirefringentLorentz-violating effects, using the observed spectral lags of the gamma-rayburst GRB 160625B. This burst has unusually large high-energy photonstatistics, so we can obtain constraints from the true spectral time lags ofbunches of high-energy photons rather than from the rough time lag of a singlehighest-energy photon. Also, GRB 160625B is the only burst to date having awell-defined transition from positive lags to negative lags, which provides aunique opportunity to distinguish Lorentz-violating effects from anysource-intrinsic time lag in the emission of photons of different energy bands.Our results place comparatively robust two-sided constraints on a variety ofisotropic and anisotropic coefficients for Lorentz violation, including firstbounds on Lorentz-violating effects from operators of mass dimension ten in thephoton sector.

Constraining Anisotropic Lorentz Violation via the Spectral-Lag Transition of GRB 160625B