A Newtonian pre-introduction to gravitational lenses
| dc.creator | Garel, T. | |
| dc.date | 2003-11-10 | |
| dc.date | 2004-05-17 | |
| dc.date.accessioned | 2026-07-07T09:24:37Z | |
| dc.date.available | 2026-07-07T09:24:37Z | |
| dc.description | Understanding the deflection of light by a massive deflector, as well as the associated gravitational lens phenomena, require the use of the theory of General Relativity. I consider here a classical approach, based on Newton's equation of motion for massive particles. These particles are emitted by a distant source and deflected by the gravitational field of a (opaque) star or of a (transparent) galaxy. The dependence of the deviation angle $D$ on the impact parameter $b$, and the geometry of the (source, deflector, earth) triplet, imply that different particle trajectories may reach an earth based observer. Since $D(b)$ does not depend on the mass of the particles, it is tempting to set the particles' velocity equal to the speed of light to get a (Newtonian) flavor of gravitational lenses phenomena. Orders of magnitude are obtained through a non technical approach and can be compared to the General Relativity results. | |
| dc.description | Revised version; sumbmitted to Eur.J. Phys | |
| dc.identifier | https://arxiv.org/abs/physics/0311038 | |
| dc.identifier | http://arxiv.org/abs/physics/0311038 | |
| dc.identifier | Eur. J. Phys. 25, 771 (2004) | |
| dc.identifier | doi:10.1088/0143-0807/25/6/009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/156159 | |
| dc.subject | Physics Education | |
| dc.title | A Newtonian pre-introduction to gravitational lenses | |
| dc.type | text |