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Predicting the next outbursts of OJ 287 in 2006-2010
In its nearly regular cycle of outbursts the quasar OJ 287 is due for another outburst season in 2006?2010. The prediction for the exact timing depends on the adopted model. In the precessing binary model of Lehto and Valtonen the timing dep...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2006 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Very high redshift quasars and the rapid emergence of supermassive black holes
The observation of quasars at very high redshift such as Poniua'ena hypermassive starburst clusters reach the luminosities of quasars, once their massive stars to exactly. The highest redshift quasars may thus be hyper...
Astronomy (including astrophysics,space science)
- 2020 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
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Cosmo-tomography toward PKS 1830−211: Variability of the quasar and of its foreground molecular absorption monitored with ALMA
We aim to study the time variations of the system (the two main lensed images of the quasar and the two corresponding sightlines in the absorber) in order to obtain constraints on both the quasar activity and small-scale structures ...
Astronomy (including astrophysics,space science)
- 2023 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
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X-Ray Line Profile Variations during Quasar Microlensing
Observations of several gravitationally microlensed quasars in X-rays revealed the inner side of the caustic generate peaks, while those tangent from its outer side generate edges. We derive analytical shapes of the gen...
Astronomy (including astrophysics,space science)
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
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The unprecedented optica outburst of the quasar 3C 454.3
The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. The maximum brightness detected was R=12.0, which represents the most luminous quasar state thus far observ...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2006 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Modeling Quasar Microlensing
Light from a distant quasar passing in the vicinity of a foreground galaxy may be deflected by its gravitational field. According to the Fermat principle multiple macro-images of the quasar can then be observed. In addition, the lig...
Physical sciences
- 2015 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
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The historical 1900 and 1913 outbursts of the binary blazar candidate OJ287
Main topics of the document: quasars; individual; OJ287; binary blazar; astronomy...
BE - Teoretická fyzika
- 2013 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Verification of nondosimetric parameters for 3D treatment planning systems with QUASAR phantoms
In 2004, series of tests with QUASAR phantoms were performed on two Czech radiotherapy workplaces. QUASAR phantoms facilitate the evaluation of a large number of nondosimetric functions for three-dimensional treatment planning syyst...
FS - Lékařská zařízení, přístroje a vybavení
- 2005 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare
OJ 287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts that are predictable in a binary black hole model. The model predicted a major optical outburst in 2015 December. We found that the outbur...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2016 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Effect of Extinction on Quasar Luminosity Distances Determined from UV and X-Ray Flux Measurements
In Khadka et al., a sample of X-ray-detected reverberation-mapped quasars -L UV and R-L luminosity distances to the same quasars exhibit a distribution of their differences that is generally asymmetric and positively shifte...
Astronomy (including astrophysics,space science)
- 2024 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
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