The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Confirmation of Earth-Mass Planets Orbiting the Millisecond Pulsar PSR B1257 + 12
Abstract
The discovery of two Earth-mass planets orbiting an old (∼10 9 years), rapidly spinning neutron star, the 6.2-millisecond radio pulsar PSR B1257+12, was announced in early 1992. It was soon pointed out that the approximately 3:2 ratio of the planets' orbital periods should lead to accurately predictable and possibly measurable gravitational perturbations of their orbits. The unambiguous detection of this effect, after 3 years of systematic timing observations of PSR B1257+12 with the 305-meter Arecibo radiotelescope, as well as the discovery of another, moon-mass object in orbit around the pulsar, constitutes irrefutable evidence that the first planetary system around a star other than the sun has been identified.
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Cites
A Simplex Method for Function Minimization
Nelder, J. A., & Mead, R. (1965) · The Computer Journal · doi:10.1093/comjnl/7.4.308 · Cited by 28,905
A planetary system around the millisecond pulsar PSR1257 + 12
Wolszczan, A., & Frail, D. A. (1992) · Nature · doi:10.1038/355145a0 · Cited by 1,554
Self-citationFurther experimental tests of relativistic gravity using the binary pulsar PSR 1913 + 16
Taylor, J. H., & Weisberg, J. M. (1989) · The Astrophysical Journal · doi:10.1086/167917 · Cited by 850
Numerical treatment of ordinary differential equations by extrapolation methods
Bulirsch, R., & Stoer, J. (1966) · Numerische Mathematik · doi:10.1007/bf02165234 · Cited by 847
A search for substellar companions to solar-type stars
Campbell, B., Walker, G. A. H., & Yang, S. (1988) · The Astrophysical Journal · doi:10.1086/166608 · Cited by 402
A nearby 37.9-ms radio pulsar in a relativistic binary system
Wolszczan, A. (1991) · Nature · doi:10.1038/350688a0 · Cited by 207
Self-citationPhillips, J. A., Thorsett, S. E., & Kulkarni, S. (1993) · Astronomical Society of the Pacific eBooks · Cited by 132
A search for substellar companions to southern solar-type stars
Murdoch, K., Hearnshaw, J. B., & Clark, M. (1993) · The Astrophysical Journal · doi:10.1086/173003 · Cited by 120
The masses of two binary neutron star systems
Thorsett, S. E., Arzoumanian, Z., Mckinnon, M. M., & Taylor, J. H. (1993) · The Astrophysical Journal · doi:10.1086/186758 · Cited by 112
Cited by
A Jupiter-mass companion to a solar-type star
Mayor, M., & Queloz, D. (1995) · Nature · doi:10.1038/378355a0 · Cited by 4,111
Kepler planet-detection mission: Introduction and first results
Borucki, W. J., Koch, D., Basri, G., Batalha, N., Brown, T., Caldwell, D., Caldwell, J., Christensen-Dalsgaard, J., Cochran, W. D., DeVore, E., et al. (2010) · Science · doi:10.1126/science.1185402 · Cited by 4,035
Protoplanet Migration by Nebula Tides
Ward, W. R. (1997) · Icarus · doi:10.1006/icar.1996.5647 · Cited by 1,071
Defining and cataloging exoplanets: the exoplanet.eu database
Schneider, J., Dedieu, C., Le Sidaner, P., Savalle, R., & Zolotukhin, I. (2011) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201116713 · Cited by 657
Binary and Millisecond Pulsars
Lorimer, D. R. (2008) · Living Reviews in Relativity · doi:10.12942/lrr-2008-8 · Cited by 616
Metadata
- Authors
- Wolszczan, A.
- Venue
- Science
- Published
- 1994-04-22
- Volume
- 264
- Issue
- 5158
- Pages
- 538-542
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2001010481
- Cited by
- 379
- References
- 16
- FWCI
- 27.53
- Type
- journal article
- Language
- en
- Open access
- closed
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.