NGC 4993 (also catalogued as NGC 4994 in the New General Catalogue) is a lenticular galaxy located about 140 million light-years away in the constellation...
18 KB (1,601 words) - 22:35, 5 August 2024
detectors on 17 August 2017, originating from the shell elliptical galaxy NGC 4993, about 140 million light years away. The signal was produced by the last...
102 KB (5,884 words) - 22:42, 20 November 2024
collaborated to detect the electromagnetic counterpart, a kilonova in the galaxy NGC 4993, 40 megaparsecs away, emitting a short gamma ray burst (GRB 170817A) seconds...
106 KB (12,668 words) - 03:05, 12 November 2024
electromagnetic spectrum (AT 2017gfo) located in a relatively nearby galaxy, NGC 4993. Observations of AT 2017gfo confirmed that it was the first conclusive...
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is of fairly uniform brightness throughout. Another notable galaxy is NGC 4993, an elliptical galaxy which was the source of events GW170817, GRB 170817A...
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gravitational wave associated with the merger of two neutron stars in NGC 4993, an elliptical galaxy in the constellation Hydra about 140 million light...
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(2018). "A detached stellar-mass black hole candidate in the globular cluster NGC 3201". Monthly Notices of the Royal Astronomical Society: Letters. 475 (1):...
24 KB (3,259 words) - 23:22, 29 October 2024
DES concluded that the optical counterpart they have identified near NGC 4993 is associated with GW170817. This discovery ushers in the era of multi-messenger...
50 KB (5,469 words) - 04:27, 25 July 2024
optical telescopes. August 2017: A neutron star collision in the galaxy NGC 4993 produced the gravitational wave signal GW170817, which was observed by...
17 KB (1,722 words) - 22:30, 7 September 2024
observatories; first polarization measurement GW170817 12:41:04 2017-10-16 16; NGC 4993 33.0+0.0 −2.1 40±10 ≥ 0.04 1.186+0.001 −0.001 0.00+0.02 −0.01 NS 1.46+0...
224 KB (6,281 words) - 20:23, 22 November 2024
In August 2017, a neutron star collision that occurred in the galaxy NGC 4993 produced the gravitational wave signal GW170817, which was observed by...
45 KB (5,788 words) - 22:52, 22 November 2024
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83. Positioned just 1.8° to the south-southwest is the planetary nebula NGC 3242. Mu Hydrae has an annual parallax shift of 13.93 mas, which yields a...
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NGC 4701 is an unbarred spiral galaxy in the New General Catalogue, located in the constellation Virgo. It was discovered by the English astronomer William...
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44±2 km/s Other designations η Mus, CPD−67° 2224, FK5 493, HD 114911, HIP 64661, HR 4993, SAO 252224, WDS J13152-6754A Database references SIMBAD data...
10 KB (677 words) - 00:16, 23 August 2024
NGC 4614 is a barred lenticular galaxy in the New General Catalog. It is located in the constellation of Coma Berenices. It was discovered in 1864 by...
3 KB (211 words) - 18:24, 18 January 2024
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8 KB (642 words) - 22:59, 4 August 2024
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12 KB (989 words) - 03:17, 15 November 2024
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3 KB (129 words) - 21:37, 9 May 2024
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8 KB (518 words) - 01:50, 23 August 2024
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7 KB (483 words) - 13:53, 18 July 2024
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11 KB (869 words) - 03:20, 15 November 2024
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9 KB (775 words) - 09:40, 27 October 2023
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