Size is everything : universal features of quasar microlensing with extended sources
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2006
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| Online Access: | http://hdl.handle.net/1721.1/32748 |
| _version_ | 1826196916042465280 |
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| author | Mortonson, Michael J. (Michael John), 1983- |
| author2 | Paul L. Schechter. |
| author_facet | Paul L. Schechter. Mortonson, Michael J. (Michael John), 1983- |
| author_sort | Mortonson, Michael J. (Michael John), 1983- |
| collection | MIT |
| description | Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004. |
| first_indexed | 2024-09-23T10:39:59Z |
| format | Thesis |
| id | mit-1721.1/32748 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:39:59Z |
| publishDate | 2006 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/327482019-04-12T09:13:38Z Size is everything : universal features of quasar microlensing with extended sources Universal features of quasar microlensing with extended sources Mortonson, Michael J. (Michael John), 1983- Paul L. Schechter. Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Dept. of Physics. Physics. Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004. Includes bibliographical references (p. 67-72). We examine the effect that the shape of the source brightness profile has on the magnitude fluctuations of images in lens systems due to microlensing. We do this by convolving a variety of accretion disk models (including Gaussian disks, uniform disks, "cones," and a Shakura-Sunyaev thermal model) with two magnification patterns in the source plane, one with convergence [kappa] = 0.4 and shear [gamma] = 0 (positive parity), and the other with [kappa]=[gamma]= 0.6 (negative parity). By looking at magnification histograms of the convolutions and using chi-squared tests to determine the number of observations that would be necessary to distinguish histograms associated with different disk models, we find that, for circular disk models, the microlensing fluctuations are relatively insensitive to all properties of the models except the half-light radius of the disk. by Michael J. Mortonson. S.B. 2006-05-15T20:27:11Z 2006-05-15T20:27:11Z 2004 2004 Thesis http://hdl.handle.net/1721.1/32748 56737901 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 72 p. 3442463 bytes 3445180 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Mortonson, Michael J. (Michael John), 1983- Size is everything : universal features of quasar microlensing with extended sources |
| title | Size is everything : universal features of quasar microlensing with extended sources |
| title_full | Size is everything : universal features of quasar microlensing with extended sources |
| title_fullStr | Size is everything : universal features of quasar microlensing with extended sources |
| title_full_unstemmed | Size is everything : universal features of quasar microlensing with extended sources |
| title_short | Size is everything : universal features of quasar microlensing with extended sources |
| title_sort | size is everything universal features of quasar microlensing with extended sources |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/32748 |
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