Perturbation of Gravitational Lensing (2009)
Rhie, Sun Hong, Bennett, Clara S.
A gravitational lens system can be perturbed by "rogue systems" in angular proximities but at different distances. A point mass perturbed by another point mass can be considered as a large separation...
A Thought of Wrapping Space Shuttle External Tank with Ceramic Fiber Fishnet Stockings (2006)
The new camera system of the shuttle Discovery on STS-114 that blasted off at 10:39am, Tuesday, July 26, 2005, after 906 days of grounding since the Columbia accident, has produced high resolution...
How Far Away are Gravitational Lens Caustics? Wrong Question (2005)
It has been a persistent question at least for a decade where the gravitational lens caustics are in the radial direction: whether in front of the lensing mass, behind the lensing mass, or on the...
n-point Gravitational Lenses with 5(n-1) Images (2003)
It has been conjectured (astro-ph/0103463) that a gravitational lens consisting of n point masses can not produce more than 5(n-1) images as is known to be the case for n = 2 and 3. The reasoning is...
Addendum to Astro-ph/0207612: Reflection Symmetry of Cusps in Gravitational Lensing (2002)
A contour plot of positive iso-J curves is shown for a gravitational binary lens epsilon_2 = 0.1883 and ell = 0.687. The caustic curve is made of 4-cusped central caustic (so-called "stealth bomber")...
Reflection Symmetry of Cusps in Gravitational Lensing (2002)
Criticality in graviational microlensing is an everyday issue because that is what generates microlensing signals which may be of photon-challenged compact objects such as black holes or planetary...
Line Caustic Revisted: Which distance is $\delta$ in $J^{-1}\propto \sqrt{\delta^{-1}}$? (2002)
The line caustic behavior has been discussed since Chang and Refsdal (1979) mentioned inverse-square-root-of-the-distance dependence of the amplification of the images near the critical curve in a...
How Cumbersome is a Tenth Order Polynomial?: The Case of Gravitational Triple Lens Equation (2002)
Three point mass gravitational lens equation is a two-dimensional vector equation that can be embedded in a tenth order analytic polynomial equation of one complex variable, and we can solve the one...
Can A Gravitational Quadruple Lens Produce 17 images? (2001)
Gravitational lensing can be by a faint star, a trillion stars of a galaxy, or a cluster of galaxies, and this poses a familiar struggle between particle method and mean field method. In a bottom-up...
Galactic Exoplanet Survey Telescope (GEST) was proposed for a discovery mission to search for microlensing terrestrial planets toward the Galactic bulge and also Kuiper Belt Objects (KBOs) that are...
Simulation of a Space-Based Microlensing Survey for Terrestrial Extra-Solar Planets (2000)
Bennett, David P., Rhie, Sun Hong
We show that a space-based gravitational microlensing survey for terrestrial extra-solar planets is feasible in the near future, and could provide a nearly complete picture of the properties of...
Bennett, David P., Rhie, Sun Hong
We present a conceptual design for a space based Galactic Exoplanet Survey Telescope (GEST) which will use the gravitational microlensing technique to detect extra solar planets with masses as low as...
When angular objects in lensing are considered as linear objects, interesting phenomena start happening. Tachyonic caustics are one example. We review that the intrinsic variables of the lens...
Line Caustic Microlensing and Limb Darkening (1999)
Rhie, Sun Hong, Bennett, David P.
In a line caustic crossing microlensing event, the caustic line moving across the surface of the source star provides a direct method to measure the integrated luminosity profile of the star....
Binary Microlensing Event MACHO-98-SMC-1 (1999)
The recent binary microlensing event toward the Small Magellanic Cloud MACHO-98-SMC-1 was alerted by the MACHO collaboration and monitored by many microlensing experiments for its complete coverage...
Detecting Earth-Mass Planets with Gravitational Microlensing (1996)
Bennett, David P., Rhie, Sun Hong
We show that Earth mass planets orbiting stars in the Galactic disk and bulge can be detected by monitoring microlensed stars in the Galactic bulge. The star and its planet act as a binary lens which...
A Test of Gamma Ray Burst Recurrence in the BATSE 3B Data Set (1995)
Bennett, David P., Rhie, Sun Hong
We analyse the BATSE 3B catalog using the pair-matching statistic. This statistic counts only the burst pairs which may have originated from the same source, so it is less likely to yield false...
Infimum Microlensing Amplification of the Maximum Number of Images of $n$-point Lens Systems (1995)
The total amplification of a source inside a caustic curve of a binary lens is no less than 3. Here we show that the infimum amplification 3 is satisfied by a family of binary lenses where the source...
Match Probability Statistics and Gamma Ray Burst Recurrences in the BATSE Catalog (1995)
Rhie, Sun Hong, Bennett, David
We develop match probability statistics to test the recurrences of gamma ray bursts in the BATSE catalog 1B and 2B. We do not find a signal of repetitions at the match level of 1.e-3.
Is There Evidence for Repeating Gamma Ray Bursters in the BATSE Data? (1994)
Bennett, David P., Rhie, Sun Hong
The possibility that classical gamma ray bursts (GRB) occasionally repeat from the same locations on the sky provides a critical test of GRB models. There is currently some controversy about whether...
COBE's Constraints on the Global Monopole and Texture Theories of Cosmic Structure Formation (1992)
Bennett, David P., Rhie, Sun Hong
We report on a calculation of large scale anisotropy in the cosmic microwave background radiation in the global monopole and texture models for cosmic structure formation. We have evolved the six...
Rhie, Sun Hong, Bennett, David P.
A Hopf texture is a vacuum field configuration of isovector fields which is an onto map from the space as a large three sphere to the vacuum manifold $S^2$. We construct a Hopf texture with...
Heavy fourth generation neutrinos / (1988)
Thesis (Ph. D.)--Stanford University, 1988.