Results 41 to 50 of about 10,480 (204)

Investigating the free-floating planet mass by Euclid observations

, 2016
The detection of anomalies in gravitational microlensing events is nowadays one of the main goals among the microlensing community. In the case of single-lens events, these anomalies can be caused by the finite source effects, that is when the source ...
De Paolis, Francesco, Hafizi, Mimoza, Hamolli, Lindita, Nucita, Achille A.   +3 more
core   +1 more source

Constraints on Cold H_2 Clouds from Gravitational Microlensing Searches [PDF]

, 2000
It has been proposed that the Galaxy might contain a population of cold clouds in numbers sufficient to account for a substantial fraction of the total mass of the Galaxy. These clouds would have masses of the order of 10^{-3} Solar mass and sizes of the
B. T. Draine, De Paolis F., De Paolis F., Kalberla P. M. W., Lasserre T., Pfenniger D., R. R. Rafikov, Udalski A.   +7 more
core   +2 more sources

Gravitational microlensing results from macho [PDF]

Nuclear Physics B - Proceedings Supplements, 1995
Talk given at Neutrino-94, to appear in Nucl. Phys. B Proceedings Supp.
Sutherland, W., Alcock, C., Allsman, R., Axelrod, T., Bennett, D., Chan, S., Cook, K., Freeman, K., Griest, K., Marshall, S., Perlmutter, S., Peterson, B., Pratt, M., Quinn, P., Rodgers, A., Stubbs, C.   +15 more
openaire   +2 more sources

Bose‐Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves

Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
We present a comparative confrontation of both the Bose‐Einstein Condensate (BEC) and the Navarro‐Frenk‐White (NFW) dark halo models with galactic rotation curves. We employ 6 High Surface Brightness (HSB), 6 Low Surface Brightness (LSB), and 7 dwarf galaxies with rotation curves falling into two classes.
M. Dwornik, Z. Keresztes, E. Kun, L. Á. Gergely, Sergei D. Odintsov   +4 more
wiley   +1 more source

Detection of Extrasolar Planets by Gravitational Microlensing

, 2008
Gravitational microlensing provides a unique window on the properties and prevalence of extrasolar planetary systems because of its ability to find low-mass planets at separations of a few AU.
A. Alcock, A. D. Bolatto, A. Gould, A. Gould, A. Gould, A. Gould, A. Gould, A. Gould, A. P. Boss, A. Udalski, A. Udalski, A. Udalski, A. Wolszczan, B. Paczyński, B. S. Gaudi, B. S. Gaudi, B. S. Gaudi, B. S. Gaudi, B. S. Gaudi, C. Alcock, C. Alcock, C. Alcock, C. Alcock, C. Alcock, C. Hamadache, C. Han, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. P. Bennett, D. S. Graff, D.P. Bennett, F. Abe, F. Delplancke, G. Basri, G. F. Lewis, G. Laughlin, G. M. Kennedy, G. T. Belle van, I. A. Bond, I. A. Bond, I.A. Bond, I.A. Bond, J. An, J. Yoo, J.-P. Beaulieu, K. C. Sahu, K. Chang, K. Chang, K. Griest, M. Albrow, M. C. Smith, M. C. Smith, M. D. Albrow, M. D. Albrow, M. D. Albrow, M. Dominik, M. Dominik, M. Jaroszynski, M. S. Bessell, P. Kervella, P. Popowski, P. Schneider, P. Schneider, P. Tisserand, R. P. Butler, R. R. Bourassa, S. Benetti, S. Dong, S. Dong, S. H. Rhie, S. H. Rhie, S. H. Rhie, S. H. Rhie, S. Ida, S. J. Peale, S. Liebes, S. Mao, S. Mao, S. Mao, S. Poindexter, S. Refsdal, S. Refsdal, S. Udry, T. R. Lauer, T. Sumi, T. Sumi, T. Yanagisawa, X. Wu   +93 more
core   +1 more source

Gravitational Microlensing Evidence for a Planet Orbiting a Binary Star System [PDF]

, 1999
The study of extra-solar planetary systems has emerged as a new discipline of observational astronomy in the past few years with the discovery of a number of extra-solar planets. The properties of most of these extra-solar planets were not anticipated by
A Udalski, A Udalski, A. C. Becker, B. A. Peterson, BS Gaudi, C Alard, C Alcock, C Han, D. Maoz, D. P. Bennett, DJ Lennon, DP Bennett, E Aubourg, E. M. Leibowitz, ELN Jensen, G Bertelli, GW Marcy, H. Mendelson, J Diaz-Cordoves, J Glanz, J. Dann, J. Quinn, M Dominik, M Mayor, MJ Holman, N. Butler, O. Shemmer, P Stetson, S Mao, S. E. Turner, S. H. Rhie, S. Kaspi, S. Thomson, Y. Lipkin   +33 more
core   +2 more sources

Astrophysical applications of gravitational microlensing [PDF]

Research in Astronomy and Astrophysics, 2012
26 pages, 8 figures, review article for the special IAU issue of RAA, comments ...
openaire   +3 more sources

Estimating Finite Source Effects in Microlensing Events due to Free‐Floating Planets with the Euclid Survey

Advances in Astronomy, Volume 2015, Issue 1, 2015., 2015
In recent years free‐floating planets (FFPs) have drawn a great interest among astrophysicists. Gravitational microlensing is a unique and exclusive method for their investigation which may allow obtaining precious information about their mass and spatial distribution.
Lindita Hamolli, Mimoza Hafizi, Francesco De Paolis, Achille A. Nucita, Zdzislaw E. Musielak   +4 more
wiley   +1 more source

Detecting Multiplanetary Systems with Gravitational Microlensing and the Roman Space Telescope

The Astronomical Journal, 2023
It is plausible that most of the Stars in the Milky Way Galaxy, like the Sun, consist of planetary systems, instead of a single planet. Out of the estimately discovered 3980 planet-hosting stars, about 860 of them are known to be multiplanetary systems ...
Hossein Fatheddin, Sedighe Sajadian
doaj   +1 more source

Possibility of Detection of Exomoons with Inclined Orbits Orbiting Pulsar Planets Using the Time‐of‐Arrival Analysis

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
The perturbation caused by planet‐moon binarity on the time‐of‐arrival (TOA) signal of a pulsar with an orbiting planet is derived for the case of the orbit of the planet‐moon system inclined of an angle α with respect to the plane of the orbit of the planet‐moon barycenter around the pulsar.
Antonio Pasqua, Khudhair A. Assaf, Gary Wegner   +2 more
wiley   +1 more source