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相关论文: A New Channel for the Detection of Planetary Syste…

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We propose and evaluate the feasibility of a new strategy to search for planets via microlensing. This new strategy is designed to detect planets in "wide" orbits, i.e., with orbital separation, $a$ greater than $\sim 1.5 R_E$. Planets in…

天体物理学 · 物理学 2009-10-30 Rosanne Di Stefano , Richard A. Scalzo

We propose and evaluate the feasibility of a new strategy to search for planets via microlensing observations. This new strategy is designed to detect planets in "wide" orbits, i.e., with orbital separation, a, greater than ~1.5 R_E.…

天体物理学 · 物理学 2007-05-23 Rosanne Di Stefano , Richard A. Scalzo

We classify various types of planetary lensing signals and the channels of detecting them. We estimate the relative frequencies of planet detections through the individual channels with special emphasis on the new channels to be…

天体物理学 · 物理学 2009-11-13 Cheongho Han

We demonstrate that microlensing can be used for detecting planets in binary stellar systems. This is possible because in the geometry of planetary binary systems where the planet orbits one of the binary component and the other binary star…

天体物理学 · 物理学 2009-11-13 Dong-Wook Lee , Chung-Uk Lee , Byeong-Gon Park , Sun-Ju Chung , Young-Soo Kim , Ho-Il Kim , Cheongho Han

The Einstein rings and proper motions of nearby stars tend to be large. Thus, every year some foreground stars within a few hundred parsecs of Earth induce gravitational lensing events in background stars. In some of these cases, the events…

地球与行星天体物理 · 物理学 2015-06-04 Rosanne Di Stefano , James Matthews , Sebastien Lepine

Simulations of planetary microlensing at high magnification that were carried out on a cluster computer are presented. It was found that the perturbations due to two-thirds of all planets occur in the time interval [-0.5t_FWHM, 0.5t_ FWHM]…

天体物理学 · 物理学 2009-11-07 N. J. Rattenbury , I. A. Bond , J. Skuljan , P. C. M. Yock

Microlensing is the most promising method to study the statistical frequency of extra-solar planets orbiting typical (random) stars in the Milky Way, even those several kiloparsecs from Earth. The lensing zone corresponds to orbital…

天体物理学 · 物理学 2009-09-25 Penny D. Sackett

The statistical distribution of the masses of planets about stars between the Sun and the center of the galaxy is constrained to within a factor of three by an intensive search for planets during microlensing events. Projected separations…

天体物理学 · 物理学 2016-08-30 S. J. Peale

Microlensing is potentially sensitive to multiple-planet systems containing analogs of all the solar system planets except Mercury, as well as to free floating planets. I review the landscape of microlensing planet searches, beginning with…

天体物理学 · 物理学 2007-11-13 B. Scott Gaudi

Hundreds of gravitational microlensing events have now been detected towards the Galactic bulge, with many more to come. The detection of fine structure in these events has been theorized to be an excellent way to discover extra-solar…

天体物理学 · 物理学 2010-04-06 Kim Griest , Neda Safizadeh

During the months when the galactic bulge is visible from the southern hemisphere, there are typically about 8 to 10 on-going microlensing events at any given time. If the lensing stars have planets around them, then the signature of the…

天体物理学 · 物理学 2007-05-23 Kailash C. Sahu

Microlensing can be used to discover exoplanets of a wide range of masses with orbits beyond ~ 1 AU, and even free-floating planets. The WFIRST mission will use microlensing to discover approximately 1600 planets by monitoring ~100 million…

地球与行星天体物理 · 物理学 2021-01-12 Somayeh Khakpash , Matthew Penny , Joshua Pepper

Microlensing events are usually selected among single-peaked non-repeating light curves in order to avoid confusion with variable stars. However, a microlensing event may exhibit a second microlensing brightening episode when the source…

天体物理学 · 物理学 2009-11-13 J. Skowron , L. Wyrzykowski , S. Mao , M. Jaroszynski

This paper is devoted to exploring how we can discover and study nearby (< 1-2 kpc) planetary and binary systems by observing their action as gravitational lenses. Lensing can extend the realm of nearby binaries and planets that can be…

天体物理学 · 物理学 2008-01-11 R. Di Stefano

Gravitational microlensing events of high magnification provide exceptional sensitivity to the presence of low-mass planets orbiting the lens star, including planets with masses as low as that of Earth. The essential requirement for the…

天体物理学 · 物理学 2008-05-14 Philip Yock

Under the current microlensing planet search strategy of monitoring events caused by stellar-mass lenses, only planets located within a narrow region of separations from central stars can be effectively detected. However, with the dramatic…

天体物理学 · 物理学 2009-11-07 Cheongho Han , Young Woon Kang

More than 100 microlensing events have been detected during the last ~4 years, most of them towards the Galactic Bulge. Since the line of sight towards the Bulge passes through the disk and the Bulge itself, the known stars towards the…

天体物理学 · 物理学 2007-05-23 Kailash C. Sahu

The successful prediction of lensing events is a new and exciting enterprise that provides opportunities to discover and study planetary systems. The companion paper investigates the underlying theory. This paper is devoted to outlining the…

地球与行星天体物理 · 物理学 2012-02-27 Rosanne Di Stefano , James Matthews , Sebastien Lepine

OGLE III and MOA II are discovering 600-1000 Galactic Bulge microlens events each year. This stretches the resources available for intensive follow-up monitoring of the lightcurves in search of anomalies caused by planets near the lens…

地球与行星天体物理 · 物理学 2015-05-13 Keith Horne , Colin Snodgrass , Yianni Tsapras

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 planetary systems in our Galaxy. We present…

天体物理学 · 物理学 2009-10-31 David P. Bennett , Sun Hong Rhie
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