scholarly journals A compact radio source in the high-redshift soft gamma-ray blazar IGR J12319–0749

2013 ◽  
Vol 552 ◽  
pp. A109 ◽  
Author(s):  
S. Frey ◽  
Z. Paragi ◽  
K. É. Gabányi ◽  
T. An
Keyword(s):  
Radio Source ◽  
Gamma Ray ◽  
High Redshift ◽  
Compact Radio Source

scholarly journals Soft Gamma Repeaters Revisited with BATSE

1996 ◽  
Vol 165 ◽  
pp. 477-488
Author(s):  
C. Kouveliotou
Keyword(s):  
Radio Source ◽  
Gamma Ray ◽  
Short Review ◽  
X Ray ◽  
Soft Gamma Repeaters ◽  
Compact Radio Source ◽  
Transient Source ◽  
Soft Gamma Repeater ◽  
Burst And Transient Source

After the first 4 years of its operation, the Burst and Transient Source Experiment (BATSE) onboard the Compton Gamma Ray Observatory (CGRO), detected recurrent emission from two of the three known Soft Gamma Repeater (SGR) sources, SGR 1900+14 and SGR 1806-20. The reactivation of the latter prompted a quick international campaign resulting in the identification of the X-ray counterpart of the source, which also coincides with a compact radio source. The absence of detection of new sources in the 4 years of BATSE operation and the reactivation of two of the three already known SGRs, indicates that these objects are rare. We give here a short review of the previously detected SGR emissions and present the recent results obtained with BATSE.

scholarly journals The Kinematic and Spectral Ages of the Compact Radio Source CTD 93

2006 ◽  
Vol 648 (1) ◽  
pp. 148-157 ◽  
Author(s):  
Hiroshi Nagai ◽  
Makoto Inoue ◽  
Keiichi Asada ◽  
Seiji Kameno ◽  
Akihiro Doi
Keyword(s):  
Radio Source ◽  
Compact Radio Source

scholarly journals Exploration of the high-redshift universe enabled by THESEUS

2021 ◽  
Author(s):  
N. R. Tanvir ◽  
E. Le Floc’h ◽  
L. Christensen ◽  
J. Caruana ◽  
R. Salvaterra ◽  
...  
Keyword(s):  
Star Formation ◽  
Gamma Ray ◽  
High Redshift ◽  
Formation Rate ◽  
Star Forming ◽  
Chemical Enrichment ◽  
Long Duration ◽  
Absorption Studies ◽  
Population Iii Stars ◽  
High Redshift Universe

AbstractAt peak, long-duration gamma-ray bursts are the most luminous sources of electromagnetic radiation known. Since their progenitors are massive stars, they provide a tracer of star formation and star-forming galaxies over the whole of cosmic history. Their bright power-law afterglows provide ideal backlights for absorption studies of the interstellar and intergalactic medium back to the reionization era. The proposed THESEUS mission is designed to detect large samples of GRBs at z > 6 in the 2030s, at a time when supporting observations with major next generation facilities will be possible, thus enabling a range of transformative science. THESEUS will allow us to explore the faint end of the luminosity function of galaxies and the star formation rate density to high redshifts; constrain the progress of re-ionisation beyond $z\gtrsim 6$ z ≳ 6 ; study in detail early chemical enrichment from stellar explosions, including signatures of Population III stars; and potentially characterize the dark energy equation of state at the highest redshifts.

scholarly journals Gamma‐Ray Bursts as a Probe of the Very High Redshift Universe

2000 ◽  
Vol 536 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Donald Q. Lamb ◽  
Daniel E. Reichart
Keyword(s):  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
High Redshift Universe ◽  
Very High

scholarly journals Gamma-ray bursts from stellar remnants: probing the Universe at high redshift

1998 ◽  
Vol 294 (1) ◽  
pp. L13-L17 ◽  
Author(s):  
R. A. M. J. Wijers ◽  
J. S. Bloom ◽  
J. S. Bagla ◽  
P. Natarajan
Keyword(s):  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
The Universe

Swift observations of gamma-ray bursts

2007 ◽  
Vol 365 (1854) ◽  
pp. 1119-1128 ◽  
Author(s):  
Neil Gehrels
Keyword(s):  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
Optical Observations ◽  
Nearby Galaxy ◽  
X Ray ◽  
Star Forming ◽  
Star Forming Regions ◽  
Other Information ◽  
Short Grbs

Since its launch on 20 November 2004, the Swift mission has been detecting approximately 100 gamma-ray bursts (GRBs) each year, and immediately (within approx. 90 s) starting simultaneous X-ray and UV/optical observations of the afterglow. It has already collected an impressive database, including prompt emission to higher sensitivities than BATSE, uniform monitoring of afterglows and a rapid follow-up by other observatories notified through the GCN. Advances in our understanding of short GRBs have been spectacular. The detection of X-ray afterglows has led to accurate localizations and the conclusion that short GRBs can occur in non-star-forming galaxies or regions, whereas long GRBs are strongly concentrated within the star-forming regions. This is consistent with the NS merger model. Swift has greatly increased the redshift range of GRB detection. The highest redshift GRBs, at z ∼5–6, are approaching the era of reionization. Ground-based deep optical spectroscopy of high redshift bursts is giving metallicity measurements and other information on the source environment to a much greater distance than other techniques. The localization of GRB 060218 to a nearby galaxy, and the association with SN 2006aj, added a valuable member to the class of GRBs with detected supernova.

scholarly journals Awakening of Two Gamma-Ray High-redshift, Flat-spectrum Radio Quasars in the Southern Hemisphere

2020 ◽  
Vol 900 (1) ◽  
pp. 72 ◽  
Author(s):  
Shang Li ◽  
Lu-Ming Sun ◽  
Neng-Hui Liao ◽  
Yi-Zhong Fan
Keyword(s):  
Southern Hemisphere ◽  
Gamma Ray ◽  
High Redshift ◽  
Spectrum Radio
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