51 citations · 54 across the 2 of their papers we have counts for
10 papers
MACHOs in M31? Absence of evidence but not evidence of absence
Jelte T. A. de Jong, Lawrence M. Widrow, Patrick Cseresnjes +9
We present results of a microlensing survey toward the Andromeda Galaxy (M31) carried out during four observing seasons at the Isaac Newton Telescope (INT). This survey is part of…
Towards Constraints on Dark Energy from Absorption Spectra of Close Quasar Pairs
Adam Lidz, Lam Hui, Arlin P. S. Crotts +1
A comparison between the line of sight power spectrum of absorption in the Lyman-alpha forest and the cross power spectrum between the absorption in neighboring lines of sight offe…
Microlensing in M31; Preliminary lightcurves from MEGA
Jelte de Jong, Penny D. Sackett, Konrad Kuijken +3
One of the possible astrophysical solutions to the galactic dark matter problem is the presence of a significant amount of ``dark'' compact objects (MACHOs) in galactic dark matter…
The Structure of the Circumstellar Envelope of SN 1987A
Arlin P. S. Crotts
The volume around the SN 1987A contains a variety of structures, not just the three rings glowing in recombination lines. Many of these are revealed by light echoes, so are mapped…
MEGA, a Wide-Field Survey of Microlensing in M31
A. P. S. Crotts, R. Uglesich, G. Gyuk
We detail how microlensing internal to M31 could be used to test whether a large fraction of the matter in spiral galaxy haloes is composed of dark objects with masses comparable t…
ISO SWS/LWS observations of SN 1987A
P. Lundqvist, J. Sollerman, C. Kozma +5
We report on observations of SN 1987A with ISO SWS/LWS made 9 - 11 years after the explosion. No emission from the supernova was seen. In particular, the upper limits on the fluxes…