Results 31 to 40 of about 2,724 (154)

RoboTAP: Target priorities for robotic microlensing observations [PDF]

, 2017
Context. The ability to automatically select scientifically-important transient events from an alert stream of many such events, and to conduct follow-up observations in response, will become increasingly important in astronomy.
A. Cassan, Bachelet, Beaulieu, Bennett, Bennett, Bond, Bozza, Bramich, Brown, Burgdorf, C. Ranc, C. Snodgrass, Cassan, D. M. Bramich, D. Maoz, Dominik, Dominik, Dominik, Dominik, E. Bachelet, G. D’Ago, Gaudi, Gould, Gould, Gould, Gould, Han, Henderson, Horne, I. A. Steele, J. Menzies, J. Wambsganss, K. Horne, K. Ment, Lada, Law, M. Dominik, M. Hundertmark, Mao, N. Kains, Paczyński, Park, R. A. Street, R. Figuera Jaimes, R. W. Schmidt, Raghavan, Ridgway, S. Cross, S. Mao, Saha, Shvartzvald, Smith, Snodgrass, Steele, Street, Street, Street, Sumi, Sumi, Tsapras, Tsapras, Tsapras, Udalski, Udalski, V. Bozza, Wambsganss, Wyrzykowski, Y. Shvartzvald, Y. Tsapras, Yee, Yee, Z. Li   +71 more
core   +5 more sources

Ogle-2018-blg-0677lb: A super earth near the galactic bulge [PDF]

, 2020
We report the analysis of the microlensing event OGLE-2018-BLG-0677. A small feature in the light curve of the event leads to the discovery that the lens is a star-planet system. Although there are two degenerate solutions that could not be distinguished
Albrow, M. D., Cha, S. -M., Chung, S. -J., Gould, A., Han, C., Herrera-Martín, Antonio, Hwang, K. -H., Iwanek, P., Jung, Y. K., Kim, D. -J., Kim, H. -W., Kim, S. -L., Kozłowski, S., Lee, C. -U., Lee, D. -J., Lee, Y., Mróz, P., Park, B. -G., Pietrukowicz, P., Pogge, R. W., Poleski, R., Rybicki, K., Ryu, Y. -H., Shin, I. -G., Shvartzvald, Y., Skowron, J., Soszyński, I., Szymański, M. K., Udalski, A., Ulaczyk, K., Wrona, M., Yee, J. C., Zang, W.   +32 more
core   +2 more sources

Fast computation of quadrupole and hexadecapole approximations in microlensing with a single point-source evaluation [PDF]

, 2017
The exoplanet detection rate from gravitational microlensing has grown significantly in recent years thanks to a great enhancement of resources and improved observational strategy.
A. Cassan
semanticscholar   +1 more source

OPTIMAL SURVEY STRATEGIES AND PREDICTED PLANET YIELDS FOR THE KOREAN MICROLENSING TELESCOPE NETWORK [PDF]

, 2014
The Korean Microlensing Telescope Network (KMTNet) will consist of three 1.6 m telescopes each with a 4 deg2 field of view (FoV) and will be dedicated to monitoring the Galactic Bulge to detect exoplanets via gravitational microlensing.
C. Henderson, B. Gaudi, C. Han, J. Skowron, M. Penny, D. Nataf, A. Gould   +6 more
semanticscholar   +1 more source

KMT-2022-BLG-2397: Brown Dwarf at the Upper Shore of the Einstein Desert

The Astronomical Journal, 2023
We measure the Einstein radius of the single-lens microlensing event KMT-2022-BLG-2397 to be θ _E = 24.8 ± 3.6 μ as, placing it at the upper shore of the Einstein Desert, 9 ≲ θ _E / μ as ≲ 25, between free-floating planets (FFPs) and bulge brown dwarfs ...
Andrew Gould, Yoon-Hyun Ryu, Jennifer C. Yee, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, The KMTNet Collaboration   +20 more
doaj   +1 more source

The Galactic Exoplanet Survey Telescope (GEST)

, 2002
The Galactic Exoplanet Survey Telescope (GEST) will observe a 2 square degree field in the Galactic bulge to search for extra-solar planets using a gravitational lensing technique.
Bally, J., Bennett, D. P., Bond, I., Cheng, E., Cook, K., Deming, D., Garnavich, P., Griest, K., Jewitt, D., Kaiser, N., Lauer, T., Lunine, J., Luppino, G., Mather, J., Minniti, D., Peale, S., Rhie, S., Rhodes, J., Schneider, J., Sonneborn, G., Stevenson, R., Stubbs, C., Tenerelli, D., Woolf, N., Yock, P.   +24 more
core   +1 more source

Analysis of Planet Searching Scenarios: Radial Velocity, Gravitational Microlensing and Transit

Highlights in Science Engineering and Technology
As a matter of fact, since extrasolar planets are crucial celestial bodies for understanding stellar evolution and the starting point for investigating the origin of life, they have long been a focus of astronomical frontier research.
Ziqian Liu
semanticscholar   +1 more source

Binary-lens Microlensing Degeneracy: Impact on Planetary Sensitivity and Mass-ratio Function

The Astronomical Journal
Gravitational microlensing is a unique method for discovering cold planets across a broad mass range. Reliable statistics of the microlensing planets require accurate sensitivity estimates.
Yuxin Shang, Hongjing Yang, Jiyuan Zhang, Shude Mao, Andrew Gould, Weicheng Zang, Qiyue Qian, Jennifer C. Yee   +7 more
doaj   +1 more source

OGLE-2016-BLG-1195 AO: Lens, Companion to Lens or Source, or None of the Above?

The Astronomical Journal, 2023
We systematically investigate Vandorou et al.’s claim to have detected the host star of the low-mass-ratio ( q < 10 ^−4 ) microlensing planet OGLE-2016-BLG-1195Lb, via Keck adaptive optics (AO) measurements Δ t = 4.12 yr after the event’s peak ( t _0 ...
Andrew Gould, Yossi Shvartzvald, Jiyuan Zhang, Jennifer C. Yee, Sebastiano Calchi Novati, Weicheng Zang, Eran O. Ofek   +6 more
doaj   +1 more source

Microlensing Searches for Exoplanets

, 2018
Gravitational microlensing finds planets through their gravitational influence on the light coming from a more distant background star. The presence of the planet is then inferred from the tell-tale brightness variations of the background star during the
Tsapras, Yiannis
core   +1 more source