Search results for "GRB 090423"

showing 3 items of 3 documents

Zvaigžņotā Debess: 2009, Vasara (204)

2009

Contents: E.Conners. The Trojan Asteroids ; V.Šmēlings. Men on the Moon! ; E.Bervalds. Astronomical Domes and “Sauna” ; Z.Alksne, A.Alksnis. Sakurai’s Object Fails to Escape Own Dust ; Z.Alksne, A.Alksnis. R CrB Stars Surrounded by Dust Clouds ; M.Gills. April Started with Astronomy ; A.Alksnis. First Stamps Dedicated to Astronomy by Latvia’s Post-Office ; I.Pundure. Arturs Balklavs and Astronomy of Latvia (till 1969) ; M.Sudārs. Satellite Collisions – What Threat Do They Pose? ; I.Vilks. Dwarf Planets Names in Latvian ; Announcement on the 2nd International Symposium on Dark-sky Parks: 14-19 September 2009, Slovenia ; A.Andžāns. The Best Way to Fight Darkness Is to Switch on Light (Intervi…

Zemes mākslīgo pavadoņu sadursmesPundurplanētu latviskie nosaukumiAstronomija - jaunākās publikācijasSakuraja zvaigzneKrustvārdu mīkla„Zvaigžņotās Debess” 50 gadiČ.B.Stīvensons (Charles Bruce Stephenson 9.02.1929.-3.12.2001.)Rīgas Politehnikuma ēka - vēstureDr.habil.math. Andris BuiķisVistālākais Visuma objekts GRB 090423R CrB zvaigznesAstronomija filatēlijāLinārs Laucenieks – 75Marsa atmosfēra – metānsGamma staru zvaigzne SGR J1550-5418Dainis Draviņš – 60Starptautiskais Astronomijas gads 2009Jānis Bikše – 70Antonijs Salītis – 60Latvijas matemātikas olimpiādeJānis Klētnieks – 80Leonids Roze (20.05.1925.-1.06.2009.)Cilvēki uz MēnessLatvija astronomija - vēstureAstronomiskās parādības - 2009Visuma tēma filatēlijā – bezpilota kosmiskie lidojumiKosmiskā difūzā plazma – spektroskopijaStarptautiskais simpozijs par Tumšās debess parkiem (Dark-sky Parks)Stiklaplasta kupoliArturs Balklavs-Grīnhofs
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Ultra-Fast Flash Observatory for the observation of early photons from gamma-ray bursts

2013

One of the least documented and understood aspects of gamma-ray bursts (GRBs) is the rise phase of the optical light curve. The Ultra-Fast Flash Observatory (UFFO) is an effort to address this question through extraordinary opportunities presented by a series of space missions including a small spacecraft observatory. The UFFO is equipped with a fast-response Slewing Mirror Telescope (SMT) that uses a rapidly moving mirror or mirror array to redirect the optical beam rather than slewing the entire spacecraft to aim the optical instrument at the GRB position. The UFFO will probe the early optical rise of GRBs with sub-second response, for the first time, opening a completely new frontier in …

PhysicsSpacecraftbusiness.industrySpace instrumentAstrophysics::High Energy Astrophysical PhenomenaAstrophysics::Instrumentation and Methods for AstrophysicsGeneral Physics and AstronomyAstronomyCosmic rayAstrophysicsSpace explorationGamma ray burstslaw.inventionTelescopeFlash (photography)ObservatorylawGRB 090423Gamma-ray bursts (GRBs)businessGamma-ray burstScientific instrument
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Detection of the high z GRB 080913 and its implications on progenitors and energy extraction mechanisms*

2010

We present multiwavelength observations of one of the most distant gamma-ray bursts detected so far, GRB080913. Based on these observations, we consider whether it could be classified as a short-duration GRB and discuss the implications for the progenitor nature and energy extraction mechanisms. Methods. Multiwavelength X-ray, near IR and millimetre observations were made between 20.7 h and ∼16.8 days after the event. Results. Whereas a very faint afterglow was seen at the 3.5m CAHA telescope in the nIR, the X-ray afterglow was clearly detected in both Swift and XMM-Newton observations. An upper limit is reported in the mm range. We have modeled the data assuming a collimated θ0 3◦ blast wa…

PhysicsRange (particle radiation)Event horizonAstrophysics (astro-ph)Cosmology: observationsFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsAstrophysicsRedshiftAfterglowphotometric [techniques]techniques: photometricSpace and Planetary ScienceGRB 090423MillimeterGamma-ray burstobservations [Cosmology]stars: gamma-ray bursts: individual: GRB 080913Energy (signal processing)gamma-ray bursts: individual: GRB 080913 [stars]
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