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CONSTRAINING GRB AS SOURCE FOR UHE COSMIC RAYS THROUGH NEUTRINO OBSERVATIONS 通过中微子观测限制GRB作为宇宙射线源

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2013-02-21 DOI: 10.1051/eas/1361102

Pisin Chen

{"title":"CONSTRAINING GRB AS SOURCE FOR UHE COSMIC RAYS THROUGH NEUTRINO OBSERVATIONS","authors":"Pisin Chen","doi":"10.1051/eas/1361102","DOIUrl":"https://doi.org/10.1051/eas/1361102","url":null,"abstract":"The origin of ultra-high energy cosmic rays (UHECR) has been widely regarded as one of the major questions in the frontiers of particle astrophysics. Gamma ray bursts (GRB), the most violent explosions in the universe second only to the Big Bang, have been a popular candidate site for UHECR productions. The recent IceCube report on the non-observation of GRB induced neutrinos therefore attracts wide attention. This dilemma requires a resolution: either the assumption of GRB as UHECR accelerator is to be abandoned or the expected GRB induced neutrino yield was wrong. It has been pointed out that IceCube has overestimated the neutrino flux at GRB site by a factor of ~5. In this paper we point out that, in addition to the issue of neutrino production at source, the neutrino oscillation and the possible neutrino decay during their flight from GRB to Earth should further reduce the detectability of IceCube, which is most sensitive to the muon-neutrino flavor as far as point-source identification is concerned. Specifically, neutrino oscillation will reduce the muon-neutrino flavor ratio from 2/3 per neutrino at GRB source to 1/3 on Earth, while neutrino decay, if exists and under the assumption of normal hierarchy of mass eigenstates, would result in a further reduction of muon-neutrino ratio to 1/8. With these in mind, we note that there have been efforts in recent years in pursuing other type of neutrino telescopes based on Askaryan effect, which can in principle observe and distinguish all three flavors with comparable sensitivities. Such new approach may therefore be complementary to IceCube in shedding more lights on this cosmic accelerator question.","PeriodicalId":335082,"journal":{"name":"Gamma-ray Bursts: 15 Years of GRB Afterglows","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129527341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A-STAR: THE ALL-SKY TRANSIENT ASTROPHYSICS REPORTER A-star:全天瞬态天体物理记者

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2013-02-11 DOI: 10.1051/eas/1361099

J. Osborne, P. O’Brien, P. Evans, G. Fraser, A. Martindale, J. Atteia, B. Cordier, S. Mereghetti

引用次数: 1

LINEAR AND CIRCULAR POLARIMETRY OBSERVATIONS OF GAMMA-RAY BURST AFTERGLOWS 伽玛射线暴余辉的线性和圆偏振观测

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2013-02-08 DOI: 10.1051/eas/1361029

K. Wiersema

引用次数: 0

TEMPORAL DECOMPOSITION STUDIES OF GRB LIGHTCURVES 伽马射线暴光曲线的时间分解研究

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2013-01-17 DOI: 10.1051/eas/1361005

N. Bhat

引用次数: 1

FEASIBILITY OF A SMALL, RAPID OPTICAL/IR RESPONSE, NEXT GENERATION GAMMA-RAY BURST MISSION 小型，快速光学/红外响应，下一代伽马射线爆发任务的可行性

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2012-12-28 DOI: 10.1051/eas/1361100

B. Grossan, G. Smoot, V. Bogomolov, S. Svertilov, N. Vedenkin, M. Panasyuk, B. Goncharov, G. Rozhkov, K. Saleev, E. Grobovskoj, A. S. Krasnov, V. Morozenko, V. Osedlo, E. Rogkov, T. V. Vachenko, E. Linder, Extreme Universe Laboratory, M. University, Russian Federation., University of Maryland Baltimore County Jet Propulsion Laboratory, Usa, U. Berkeley

{"title":"FEASIBILITY OF A SMALL, RAPID OPTICAL/IR RESPONSE, NEXT GENERATION GAMMA-RAY BURST MISSION","authors":"B. Grossan, G. Smoot, V. Bogomolov, S. Svertilov, N. Vedenkin, M. Panasyuk, B. Goncharov, G. Rozhkov, K. Saleev, E. Grobovskoj, A. S. Krasnov, V. Morozenko, V. Osedlo, E. Rogkov, T. V. Vachenko, E. Linder, Extreme Universe Laboratory, M. University, Russian Federation., University of Maryland Baltimore County Jet Propulsion Laboratory, Usa, U. Berkeley","doi":"10.1051/eas/1361100","DOIUrl":"https://doi.org/10.1051/eas/1361100","url":null,"abstract":"We present motivations for and study feasibility of a small, rapid optical to IR response gamma ray burst (GRB) space observatory. By analyzing existing GRB data, we give realistic detection rates for X-ray and optical/IR instruments of modest size under actual flight conditions. Given new capabilities of fast optical/IR response (about 1 s to target) and simultaneous multi-band imaging, such an observatory can have a reasonable event rate, likely leading to new science. Requiring a Swift-like orbit, duty cycle, and observing constraints, a Swift-BAT scaled down to 190 square cm of detector area would still detect and locate about 27 GRB per yr. for a trigger threshold of 6.5 sigma. About 23 percent of X-ray located GRB would be detected optically for a 10 cm diameter instrument (about 6 per yr. for the 6.5 sigma X-ray trigger).","PeriodicalId":335082,"journal":{"name":"Gamma-ray Bursts: 15 Years of GRB Afterglows","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113980952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SWIFT PUBLICATION STATISTICS AND THE COMPARISON WITH OTHER MAJOR OBSERVATORIES 快速发布统计数据并与其他主要天文台进行比较

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2012-12-12 DOI: 10.1051/EAS/1361081

S. Savaglio, U. Grothkopf

引用次数: 1

RADIO AFTERGLOW OF THE JETTED TIDAL DISRUPTION EVENT SWIFT J1644+57 急流潮汐破坏事件swift j1644 +57的射电余辉

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2012-12-01 DOI: 10.1051/EPJCONF/20123904001

B. Metzger, D. Giannios, P. Mimica

{"title":"RADIO AFTERGLOW OF THE JETTED TIDAL DISRUPTION EVENT SWIFT J1644+57","authors":"B. Metzger, D. Giannios, P. Mimica","doi":"10.1051/EPJCONF/20123904001","DOIUrl":"https://doi.org/10.1051/EPJCONF/20123904001","url":null,"abstract":"The recent transient event Swift J1644+57 has been interpreted as resulting from a relativistic outflow, powered by the accretion of a tidally disrupted star onto a supermassive black hole. This discovery of a new class of relativistic transients opens new windows into the study of tidal disruption events (TDEs) and offers a unique probe of the physics of relativistic jet formation and the conditions in the centers of distant quiescent galaxies. Unlike the rapidly-varying γ/X-ray emission from Swift J1644+57, the radio emission varies more slowly and is well modeled as synchrotron radiation from the shock interaction between the jet and the gaseous circumnuclear medium (CNM). Early after the onset of the jet, a reverse shock propagates through and decelerates the ejecta released during the first few days of activity, while at much later times the outflow approaches the self-similar evolution of Blandford and McKee. The point at which the reverse shock entirely crosses the earliest ejecta is clearly observed as an achromatic break in the radio light curve at t ≈ 10 days. The flux and break frequencies of the afterglow constrain the properties of the jet and the CNM, including providing robust evidence for a narrowly collimated jet. I briefly discuss the implications of Swift J1644+57 for the fraction of TDEs accompanied by relativistic jets; the physics of jet formation more broadly; and the prospects for detecting off-axis TDE radio emission, either via follow-up observations of TDE candidates discovered at other wavelengths or blindly with upcoming wide-field radio surveys. The radio rebrightening observed months after the onset of the jet remains a major unsolved mystery, the resolution of which may require considering a jet with more complex (temporal or angular) structure.","PeriodicalId":335082,"journal":{"name":"Gamma-ray Bursts: 15 Years of GRB Afterglows","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115129340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THE COSMIC EVOLUTION OF GAMMA-RAY BURST HOST GALAXIES 伽玛射线暴宿主星系的宇宙演化

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2012-12-01 DOI: 10.1051/eas/1361061

S. Savaglio

引用次数: 0

MULTI-WAVELENGTH OBSERVATIONS OF SHORT-DURATION GAMMA-RAY BURSTS: RECENT RESULTS 短持续时间伽玛射线暴的多波长观测:最近的结果

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2012-11-30 DOI: 10.1051/eas/1361049

D. A. Kann

引用次数: 3

GRB EMISSION IN NEUTRON STAR TRANSITIONS 中子星跃迁中的GRB辐射

Gamma-ray Bursts: 15 Years of GRB Afterglows Pub Date : 2012-11-29 DOI: 10.1051/eas/1361052

M. Pérez-García, F. Daigne, J. Silk

引用次数: 1