A team led by Andrea Botteon used Chandra and eROSITA X-rays to trace the radio 'Treble Clef' to a black hole outburst and a cluster collision. The authors call the two-stage origin likely; the merger evidence comes from the shape of the cluster's hot gas.
Perspective Coverage
3 publishers
- Builder
- Builder 15%
- Operator
- Operator 7%
- Investor
- Investor 78%
Reality
- Evidence62
- Adoption
- Not scored
- Hype gap+10
- Incentives
- Not scored
- Confidence60
X-ray flares show GRB 220706A's engine still running 27 rest-frame days after the burst
Astronomers led by Benjamin Gompertz found GRB 220706A's central engine still flaring 27 rest-frame days after the burst, about 20 days past the old record. In their preprint, black hole accretion and magnetar models both have to be stretched to explain an engine that ran that long.
Reality
- Evidence50
- Adoption
- Not scored
- Hype gap+10
- Incentives
- Not scored
- Confidence45
Astronomers untangle three overlapping X-ray sources to map the supernova remnant nearest Sgr A*
Mayura Balakrishnan and colleagues separated three overlapping X-ray sources in Chandra data to make the first uncontaminated maps of Sgr A East. The cleaner signal gives a baseline for testing whether the remnant has heated the gas around the Milky Way's central black hole.
Reality
- Evidence58
- Adoption
- Not scored
- Hype gap+8
- Incentives
- Not scored
- Confidence55
Webb confirms brown dwarfs as light as two Jupiters in a nearby stellar nursery
Webb spectra identified nine new brown dwarfs in the IC 348 nursery, the faintest estimated at about two Jupiter masses, a record low for the class. It is still open whether brown dwarf formation stops there or this survey simply could not see any fainter.
Reality
- Evidence45
- Adoption
- Not scored
- Hype gap+20
- Incentives
- Not scored
- Confidence45
The 84 detections came out of public Chandra data on six galaxies with no new observing time, and the class is defined by a spectral shape that co-author Jimmy Irwin thinks may cover three different kinds of stellar remnant.
Perspective Coverage
3 publishers
- Builder
- Builder 62%
- Operator
- Operator 33%
- Investor
- Investor 5%
Reality
- Evidence64
- Adoption
- Not scored
- Hype gap+30
- Incentives45
- Confidence62
Timed Chandra pointing catches X-rays from supernova impostor AT 2016blu
Astronomers scheduled an X-ray observation to land on a predicted outburst of AT 2016blu and saw emission consistent with accretion onto a compact companion. It is the first luminous blue variable reported with such a partner.
Reality
- Evidence62
- Adoption35
- Hype gap+18
- Incentives40
- Confidence58
A decade of geomagnetic data from one observatory tightens the ultralight axion limit a hundredfold
The Kyoto-led model says an axion signal should peak in Southeast Asia, but the decade of records came from Britain, and the several unexplained dark photon candidates it also turned up cannot be checked from one station.
Reality
- Evidence62
- Adoption
- Not scored
- Hype gap+30
- Incentives68
- Confidence55
Colgate's model traces much of the nanohertz hum back to collapsed Dark Stars
If the Universe's first supermassive black holes grew out of stars heated by WIMP dark matter, that history would still sit in a background measured billions of years later. A two-author Letter says the share could be dominant.
Reality
- Evidence30
- Adoption
- Not scored
- Hype gap+40
- Incentives70
- Confidence55
A new dish at Goldstone buys NASA about nine percent more mid-size aperture
The fifth antenna of a project begun in 2009 entered service on Aug 3. It leaves 12 mid-size dishes serving more than 40 spacecraft, with part of that capacity already promised to backup duty.
Reality
- Evidence70
- Adoption78
- Hype gap+20
- Incentives72
- Confidence68
MoM-BH*-1 shows the deepest Balmer break yet measured, which its discoverers read as a 100,000-solar-mass black hole inside a dense gas cocoon 660 million years after the Big Bang.
Reality
- Evidence66
- Adoption30
- Hype gap+18
- Incentives55
- Confidence63
If Dark Stars made the first black hole seeds, pulsar timing arrays are already counting them
A Colgate University pair argue the nanohertz gravitational-wave background may be dominated by descendants of dark-matter-powered stars, which makes the signal an abundance limit on early seeds.
Reality
- Evidence38
- Adoption
- Not scored
- Hype gap+28
- Incentives
- Not scored
- Confidence34
Chandra spends 634,000 seconds on one quasar and finds a cluster's hot gas already there
A 21-million-Kelvin halo at redshift 3.25 already holds a mature cluster's share of normal matter, before the epoch when such gas was expected to start warming.
Reality
- Evidence58
- Adoption
- Not scored
- Hype gap+18
- Incentives38
- Confidence52
A spiral galaxy at redshift 2 suggests Webb's little red dots are partly a resolution problem
Push the Saguaro galaxy's arms below Webb's detection limit and what is left looks like a little red dot, according to a study published on July 29 in The Astrophysical Journal.
Reality
- Evidence58
- Adoption
- Not scored
- Hype gap+22
- Incentives65
- Confidence45