作者: 單色 時間: 2025-3-21 22:36
https://doi.org/10.1007/978-981-19-3881-8.. The results are compared with those based on more detailed modelling. The importance of an improved understanding of galaxy dynamics for the modelling of lens systems and the determination of H. is stressed.作者: Palter 時間: 2025-3-22 03:03 作者: Hangar 時間: 2025-3-22 07:37
Hybrid Theranostics Nanomaterials,he time-delay is stable against small perturbations in the image positions. The Triple Quasar PG1115+080 is among the very few such candidates. The photometry of its individual images and redshift measurement of the lensing galaxy should turn out to be useful towards a reliable estimate of the Hubble Constant.作者: 團(tuán)結(jié) 時間: 2025-3-22 11:17
Richa Chaudhary,Varun Chaudharyvitational lens hypothesis. It is suggested that the increase with frequency of the NE/SW flux ratio in the compact components can be accounted for chiefly by the core-knot structure of the source. Simulations of the ring structure at 1.69 GHz and the map at 15 GHz are presented. Speculations about the nature of the source are presented.作者: Vulnerary 時間: 2025-3-22 14:43 作者: Vulnerary 時間: 2025-3-22 17:47 作者: 技術(shù) 時間: 2025-3-22 23:39 作者: implore 時間: 2025-3-23 04:42 作者: infringe 時間: 2025-3-23 06:18
https://doi.org/10.1007/978-0-387-09783-1We present CCD photometry of four gravitational lenses. One of these, Q2237+0305, has for the past year shown a substantial and continuing decrease in the flux of the A-image. We attribute this to microlensing of the A-image. For Q0957+561 we maintain an earlier determination of the time difference of about 1.5 years.作者: 嘲弄 時間: 2025-3-23 11:56 作者: 發(fā)芽 時間: 2025-3-23 17:23 作者: 巨碩 時間: 2025-3-23 21:46 作者: 防御 時間: 2025-3-24 00:49 作者: EVADE 時間: 2025-3-24 03:51
0218+357: The smallest separation lensed system,A MERLIN map with 50 mas resolution at 5 GHz together with VLA maps at other frequencies show that 0218+357 is a gravitationally lensed system with two unresolved images of a compact core separated by 335 mas, plus an Einstein ring of similar diameter. The separation is smaller by a factor > 3 than any previously reported.作者: Crayon 時間: 2025-3-24 07:16
https://doi.org/10.1007/978-3-030-51905-6example, we show the limitation of data recently obtained on 2016+112 with a classical slit spectrograph. In conclusion, we briefly summarize the interest of bidimensional spectrography for a few other gravitational mirages.作者: esoteric 時間: 2025-3-24 13:10
L.G. Il’chenko,V.V. Il’chenko,V.V. Lobanov of a massive compact star-forming region associated with either the host galaxy or a companion galaxy and which also produces the absorption systems. Preliminary results from narrow-band imaging appears to support this conclusion.作者: paragon 時間: 2025-3-24 15:25
Bidimensional spectrography of multiple quasars,example, we show the limitation of data recently obtained on 2016+112 with a classical slit spectrograph. In conclusion, we briefly summarize the interest of bidimensional spectrography for a few other gravitational mirages.作者: 延期 時間: 2025-3-24 22:52 作者: 6Applepolish 時間: 2025-3-25 01:15 作者: 群居動物 時間: 2025-3-25 07:04 作者: 減去 時間: 2025-3-25 07:50
Redshift measurements of the brightest cluster galaxies of the gravitational lens 0957+561,d centre for the cluster and a tentative value for its radial velocity dispersion ≈ 550 km s?1. These data also provide evidence that there may be an additional group or cluster of galaxies at . = 0.503.作者: metropolitan 時間: 2025-3-25 15:08 作者: SEED 時間: 2025-3-25 17:10 作者: 走路左晃右晃 時間: 2025-3-25 23:24 作者: Kaleidoscope 時間: 2025-3-26 03:19 作者: 衣服 時間: 2025-3-26 06:50
Optical observations of gravitational lenses,cases (essentially multiply imaged quasars and micro-lensed candidates. Preliminary results of lensing statistics applied to a sample of more than 200 highly luminous quasars are then presented both for the effectiveness parameter . of galaxies and for the density parameter .. of compact lenses to produce macro-lensed images of distant quasars.作者: 用手捏 時間: 2025-3-26 10:00 作者: multiply 時間: 2025-3-26 12:43
Steckt der Teufel im Teilchen?,ly recent analysis of early X-ray observations yields a core-halo model consistent with models for the lens. The ultimate uncertainty achievable for point estimates of the Hubble constant Ho remains larger than initially hoped for.作者: 帶傷害 時間: 2025-3-26 19:22
Inverse Systems – Nanoporous Solidsde difference of ≤ 1.5 mag. Galaxy count statistics around 94 quasars with photometric data are analysed. Within radii of 6″, 10″, and 15″, and down to a Gunn . magnitude of 23, we find no significant enhancement of galaxy density over the background counts.作者: Optic-Disk 時間: 2025-3-26 21:11 作者: 懶洋洋 時間: 2025-3-27 04:53
The impact of gravitating lensing on astrophysics,k, in which he concluded that, despite the observational progress over the previous decade, lensing had made disappointingly little impact on general astrophysics. He is giving the summary at the end of this meeting too, and it will be interesting to see if he is more optimistic and encouraged. We c作者: 過度 時間: 2025-3-27 05:42
Optical observations of gravitational lenses,ational Lensing” (Toulouse, September 1989). After describing the main surveys and photometric monitorings which are being carried out in the form of systematic searches for gravitational lensing effects, we review the optical observations published during the last two years for selected individual 作者: AXIOM 時間: 2025-3-27 11:30
Old faithful: The venerable gravitational lens system 0957+561,nalysis of optical and radio light-curves appears to have yielded reliable values for the time delay .. for the images A and B of Q0957+561. A similarly recent analysis of early X-ray observations yields a core-halo model consistent with models for the lens. The ultimate uncertainty achievable for p作者: Manifest 時間: 2025-3-27 17:04
Determining the Hubble parameter,.. The results are compared with those based on more detailed modelling. The importance of an improved understanding of galaxy dynamics for the modelling of lens systems and the determination of H. is stressed.作者: fixed-joint 時間: 2025-3-27 19:16
A search for closely-spaced gravitational lenses,s in a sample of 101 bright quasars. No convincing objects were found. Several widely-separated (1 – 6 arc-sec) point source companions were detected but half of these are known to be stars, and it is argued that the remainder are also likely to be stars. A slight excess of galaxy companions to the 作者: 詳細(xì)目錄 時間: 2025-3-27 23:57 作者: REIGN 時間: 2025-3-28 02:55
Search for gravitational lensing in a sample of highly luminous quasars,rning the multiple images and the associations of galaxies with quasars, are examined. We find a significant overdensity of galaxies very close to the line-of-sight, to the HLQs. We also report the discovery of a new multiply lensed quasar candidate.作者: NUL 時間: 2025-3-28 06:57 作者: 姑姑在炫耀 時間: 2025-3-28 12:31 作者: Camouflage 時間: 2025-3-28 18:05
Redshift measurements of the brightest cluster galaxies of the gravitational lens 0957+561,rements have been used to separate field galaxies from members of the lensing cluster at . = 0.355, allowing the determination of a luminosity-weighted centre for the cluster and a tentative value for its radial velocity dispersion ≈ 550 km s?1. These data also provide evidence that there may be an 作者: 邊緣 時間: 2025-3-28 20:01
The Triple Quasar PG1115+080,he time-delay is stable against small perturbations in the image positions. The Triple Quasar PG1115+080 is among the very few such candidates. The photometry of its individual images and redshift measurement of the lensing galaxy should turn out to be useful towards a reliable estimate of the Hubbl作者: ALT 時間: 2025-3-29 01:56
1830-211 as a lens artefact,vitational lens hypothesis. It is suggested that the increase with frequency of the NE/SW flux ratio in the compact components can be accounted for chiefly by the core-knot structure of the source. Simulations of the ring structure at 1.69 GHz and the map at 15 GHz are presented. Speculations about 作者: Androgen 時間: 2025-3-29 05:29 作者: 行為 時間: 2025-3-29 09:43 作者: 裂口 時間: 2025-3-29 14:48 作者: Predigest 時間: 2025-3-29 17:11 作者: correspondent 時間: 2025-3-29 20:46 作者: 沙草紙 時間: 2025-3-30 02:23
Inverse Systems – Nanoporous Solidsnal lens systems. Preliminary analysis indicates that we have not found any new systems with sub-arcsecond separations and components having a magnitude difference of ≤ 1.5 mag. Galaxy count statistics around 94 quasars with photometric data are analysed. Within radii of 6″, 10″, and 15″, and down t作者: 惡意 時間: 2025-3-30 06:51
https://doi.org/10.1007/978-3-030-74741-1rning the multiple images and the associations of galaxies with quasars, are examined. We find a significant overdensity of galaxies very close to the line-of-sight, to the HLQs. We also report the discovery of a new multiply lensed quasar candidate.作者: 碌碌之人 時間: 2025-3-30 08:40 作者: 傻瓜 時間: 2025-3-30 14:06 作者: hemorrhage 時間: 2025-3-30 19:59
Nanomaterials for Advanced Technologiesrements have been used to separate field galaxies from members of the lensing cluster at . = 0.355, allowing the determination of a luminosity-weighted centre for the cluster and a tentative value for its radial velocity dispersion ≈ 550 km s?1. These data also provide evidence that there may be an 作者: PHIL 時間: 2025-3-30 21:45
Hybrid Theranostics Nanomaterials,he time-delay is stable against small perturbations in the image positions. The Triple Quasar PG1115+080 is among the very few such candidates. The photometry of its individual images and redshift measurement of the lensing galaxy should turn out to be useful towards a reliable estimate of the Hubbl作者: 重力 時間: 2025-3-31 03:42 作者: 策略 時間: 2025-3-31 05:32 作者: 無能力 時間: 2025-3-31 09:22
Recent radio observations of gravitational lenses,作者: wangle 時間: 2025-3-31 14:51 作者: 說不出 時間: 2025-3-31 20:15
Sizing up the universe with an optical illusion: Comments on the measurement of ,t in Q 0957+561,作者: 我還要背著他 時間: 2025-3-31 21:50
Georgia A. Malandraki PhD, CCC-SLP,JoAnne Robbins PhD, CCC-SLP, BRS-Sg themselves on expanding scales, interpreting and capitalizing on the emerging forces and forms of global circulation, building and exploiting the opportunities of global connections and meeting the challenges of fragmentation—in short, reinterpreting their social role—are the central concerns of t作者: 苦惱 時間: 2025-4-1 04:33 作者: ATP861 時間: 2025-4-1 09:10 作者: 反話 時間: 2025-4-1 11:06 作者: Magnificent 時間: 2025-4-1 17:51 作者: fleeting 時間: 2025-4-1 19:29
