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Twitter Demographics
Mendeley readers
Attention Score in Context
| Title |
Recent near-Earth supernovae probed by global deposition of interstellar radioactive 60Fe
|
|---|---|
| Published in |
Nature, April 2016
|
| DOI | 10.1038/nature17196 |
| Pubmed ID | |
| Authors |
A. Wallner, J. Feige, N. Kinoshita, M. Paul, L. K. Fifield, R. Golser, M. Honda, U. Linnemann, H. Matsuzaki, S. Merchel, G. Rugel, S. G. Tims, P. Steier, T. Yamagata, S. R. Winkler |
| Abstract |
The rate of supernovae in our local Galactic neighbourhood within a distance of about 100 parsecs from Earth is estimated to be one every 2-4 million years, based on the total rate in the Milky Way (2.0 ± 0.7 per century). Recent massive-star and supernova activity in Earth's vicinity may be traced by radionuclides with half-lives of up to 100 million years, if trapped in interstellar dust grains that penetrate the Solar System. One such radionuclide is (60)Fe (with a half-life of 2.6 million years), which is ejected in supernova explosions and winds from massive stars. Here we report that the (60)Fe signal observed previously in deep-sea crusts is global, extended in time and of interstellar origin from multiple events. We analysed deep-sea archives from all major oceans for (60)Fe deposition via the accretion of interstellar dust particles. Our results reveal (60)Fe interstellar influxes onto Earth at 1.5-3.2 million years ago and at 6.5-8.7 million years ago. The signal measured implies that a few per cent of fresh (60)Fe was captured in dust and deposited on Earth. Our findings indicate multiple supernova and massive-star events during the last ten million years at distances of up to 100 parsecs. |
Twitter Demographics
The data shown below were collected from the profiles of 46 tweeters who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 6 | 13% |
| United States | 5 | 11% |
| United Kingdom | 3 | 7% |
| China | 1 | 2% |
| Singapore | 1 | 2% |
| Austria | 1 | 2% |
| Sweden | 1 | 2% |
| Germany | 1 | 2% |
| Australia | 1 | 2% |
| Other | 3 | 7% |
| Unknown | 23 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 37 | 80% |
| Scientists | 7 | 15% |
| Science communicators (journalists, bloggers, editors) | 1 | 2% |
| Practitioners (doctors, other healthcare professionals) | 1 | 2% |
Mendeley readers
The data shown below were compiled from readership statistics for 105 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 3% |
| China | 1 | <1% |
| Austria | 1 | <1% |
| Canada | 1 | <1% |
| Unknown | 99 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 28 | 27% |
| Student > Ph. D. Student | 21 | 20% |
| Student > Bachelor | 10 | 10% |
| Student > Master | 10 | 10% |
| Professor | 7 | 7% |
| Other | 12 | 11% |
| Unknown | 17 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 32 | 30% |
| Earth and Planetary Sciences | 30 | 29% |
| Chemistry | 7 | 7% |
| Agricultural and Biological Sciences | 4 | 4% |
| Engineering | 3 | 3% |
| Other | 7 | 7% |
| Unknown | 22 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 876. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 13 May 2023.
All research outputs
#18,476
of 24,153,435 outputs
Outputs from Nature
#1,902
of 94,337 outputs
Outputs of similar age
#311
of 305,523 outputs
Outputs of similar age from Nature
#47
of 1,013 outputs
Altmetric has tracked 24,153,435 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 94,337 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 101.4. This one has done particularly well, scoring higher than 97% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 305,523 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 1,013 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 95% of its contemporaries.