Tag

Little Red Dots

All articles tagged with #little red dots

space8 days ago•138 min saved

JWST spots solar-system-sized 'black hole star' in the early universe

Astronomers using the James Webb Space Telescope have spotted MoM-BH*-1, a solar-system-sized, red, gas-enshrouded object about 660 million years after the Big Bang. Interpreted as a black hole star—a massive black hole wrapped in a cocoon of dense gas—the object could be the best evidence yet for this hypothetical class and may explain the mysterious 'little red dots' seen by JWST. The central black hole could weigh up to about 100,000 solar masses, and while previous candidates existed, MoM-BH*-1 is farther away and thus more informative; further observations are needed to confirm the model and understand how such objects form.

via Live Science|

#black-hole-star #early-universe #james-webb-space-telescope

space-and-astronomy8 days ago•58 min saved

Webb spots solar-system-sized dot likely a black hole star from the dawn of the universe

The James Webb Space Telescope identified MoM-BH*-1, a solar-system-sized, ruby-red dot seen about 660 million years after the Big Bang, proposed as a new object class: a black hole star—a dense shell of gas around a massive black hole. If confirmed, it would be the strongest evidence yet for this type of object and could help explain the enigmatic “little red dots” JWST has found. The object may host up to ~100,000 solar masses, with its Balmer-break spectrum indicating a dust-free, hydrogen/helium gas cocoon rather than ordinary starlight; further observations and modeling are needed to verify this interpretation.

via Yahoo|

#black-hole-star #early-universe #james-webb-space-telescope

science13 days ago•2 min saved

James Webb Spots a New Cosmic Class: a Black Hole Star Wrapped in Gas

Using the James Webb Space Telescope, researchers identified MoM-BH*-1—a black hole at its core surrounded by a dense gas shell that makes it look star-like, with about 100,000 solar masses and emitting energy about 100 billion times that of a typical star; it formed within 700 million years after the Big Bang. This discovery suggests many of the faint red dots seen in the early universe could be black hole stars embedded in young galaxies, potentially reshaping ideas about early black holes and galaxy growth.

via Futurism|

#black-hole-star #early-universe #james-webb-space-telescope

space-and-astronomy14 days ago•48 min saved

Webb Uncovers a Black Hole Star: The Cosmos’ New Object Class

Using the James Webb Space Telescope, scientists have identified MoM-BH*-1—a black hole star about 100,000 solar masses formed less than 700 million years after the Big Bang. Its center is a black hole that relentlessly accretes matter, emitting about 100 billion times more energy than a typical star, while a dense gas shell makes it appear star-sized. The finding suggests other so-called 'Little Red Dots' could be black hole stars, potentially reshaping our understanding of early galaxies and black hole growth.

via Yahoo|

#astronomy #black-holes #early-universe

science16 days ago•159 min saved

JWST uncovers a distant naked black-hole-star, offering clues to the little red dots

Astronomers using the James Webb Space Telescope’s Mirage/MoM survey discovered MoM-BH*-1, the farthest known naked black-hole-star. Its accretion-powered glow lights a surrounding gas cloud, and its proximity to a young, high-redshift galaxy suggests such objects could masquerade as faint galaxies in JWST observations. This finding supports the idea that black-hole stars may be key engines in the early universe and could illuminate why the JWST images show the mysterious little red dots; the team estimates MoM-BH*-1 could eventually merge with its host galaxy in about 100 million years, potentially shedding light on the birth of quasars.

via Space|

#black-hole-star #early-universe #jwst

space-and-spaceflight16 days ago•18 min saved

Astronomers Uncover a Black Hole Star in the Early Universe

Nature-published researchers report the discovery of MoM-BH*-1, a newly identified object that resembles a giant star but radiates energy like a black hole, wrapped in dense gas and outshining its host galaxy. Scientists label it a “black hole star,” a find that could illuminate how the first supermassive black holes formed and connect to the JWST-detected little red dots from the cosmic dawn; further JWST observations are planned to constrain its mass and atmospheric properties.

via Gizmodo|

#black-hole-star #early-universe #galaxies

space16 days ago•2 min saved

Astronomers Detect a Solar-System-Sized Black Hole That Shines Like a Star

Using the James Webb Space Telescope, astronomers report a candidate 'black hole star' in Cetus—the reddest object MoM-BH*-1—an entity about the size of the solar system that emits far more energy than any star yet shows stellar signatures. Computer simulations suggest it is a black hole swaddled in dense gas radiating as a star, and if confirmed, such objects could exist in large numbers, potentially shaping early galaxy evolution and serving as seeds for supermassive black holes.

via The Guardian|

#black-hole-star #early-universe #james-webb-space-telescope

space-and-astronomy18 days ago•49 min saved

JWST imagery hints the 'little red dots' are distant galactic cores, not new objects

New JWST imagery suggests the enigmatic 'little red dots' seen in deep-field images are likely ordinary distant galaxies whose bright centers outshine the rest, rather than a new class of object. Researchers used the nearby spiral galaxy Saguaro (about 3.3 billion years after the Big Bang) to model how such galaxies would look at earlier epochs, showing that LRDs could be early-universe galaxies with active nuclei and offering clues about how galaxies and their central black holes grew over cosmic time.

via Yahoo|

#black-holes #galaxy-evolution #james-webb-space-telescope

space19 days ago•134 min saved

Webb's Saguaro image reframes the little red dots puzzle

A new JWST view of the nearby Saguaro galaxy helps explain the universe’s enigmatic “little red dots”: rather than vanishing, these sources may be ordinary, distant galaxies whose bright centers dominate when observed at great distances, implying LRDs are a short-lived phase in early supermassive-black-hole growth rather than a new class of objects.

via Live Science|

#galaxy-evolution #james-webb-space-telescope #little-red-dots

space19 days ago•6 min saved

James Webb probes possible 100,000-solar-mass stars in the early universe

Using JWST, researchers have spotted more than 300 infrared “Little Red Dots” dating to about 600 million years after the Big Bang that appear compact and unusually red, potentially signaling supermassive stars up to around 100,000 solar masses (with hints of up to a million). If confirmed, these stars could illuminate how seeds of supermassive black holes form, though alternative explanations like dust-enshrouded galaxies or active nuclei remain under investigation.

via Futura, le média qui explore le monde|

#black-hole-seeds #early-universe #james-webb-space-telescope

space21 days ago•159 min saved

JWST's little red dots point to a new path in galaxy evolution

New JWST findings suggest the mysterious 'little red dots' are not a separate class but a developmental phase in galaxies with growing supermassive black holes. A z=2 galaxy nicknamed 'Saguaro' (WISEA J123635.56+621424.2) shows a bright infrared core with an obscured AGN and faint X‑rays, hinting these dots evolve into fully formed galaxies like the Milky Way.

via Space|

#active-galactic-nucleus #galaxy-evolution #high-redshift

science1 month ago•51 min saved

JWST's Little Red Dots May Be the Birthplace of Globular Clusters

Astronomers propose that the James Webb Space Telescope’s early “Little Red Dots”—compact sources seen about 600 million years after the Big Bang and then fading—could be the births of globular clusters, forming around short‑lived supermassive stars. The dots’ chemical signatures, distribution, and timing resemble properties of modern globular clusters, suggesting these objects may persist and evolve into familiar clusters like 47 Tucanae. While not a definitive proof, the idea links JWST’s surprising early-population observations to the origins of ancient star clusters observed today.

via Yahoo|

#early-universe #globular-clusters #jwst

science1 month ago•106 min saved

JWST’s Little Red Dots Could Be Birthplaces of Ancient Globular Clusters

New research suggests the James Webb Space Telescope’s bright, compact “Little Red Dots” seen around 600 million years after the Big Bang may be the early building blocks of globular clusters, potentially forming around short-lived supermassive stars. If these dots persist and evolve, they could become the dense stellar systems observed today, linking early-universe observations to mature globular clusters and shedding light on star formation in the universe’s youth.

via Space|

#early-universe #globular-clusters #james-webb-space-telescope

science1 month ago•3 min saved

Tiny Red Dots in the Early Universe Spur a New Quasi-Star Theory

The James Webb Space Telescope spotted a population of compact red sources in the early universe. A quasi-star model—an unusually light black hole (~100,000 solar masses) embedded in a dense gas envelope—reproduces many observed features of these little red dots, including their brightness in visible/IR and hydrogen emission, suggesting rapid black hole growth within protogalaxies. The model, however, struggles to predict ultraviolet brightness and certain spectral/dust signatures, leaving questions for future observations.

via BBC Sky at Night Magazine|

#black-hole-growth #james-webb-space-telescope #little-red-dots

space1 month ago•103 min saved

Blue Companions May Forge Black-Hole Seeds Behind JWST's Little Red Dots

A new JWST study proposes that the mysterious “little red dots” seen in the early universe often have nearby blue companions whose ultraviolet light triggers gas clouds to collapse directly into black holes, skipping the usual star-formation route. Examining 83 LRDs, researchers found that about 36 host a blue companion, suggesting these red dots may arise from compact star clusters or tiny early galaxies; this could help explain the seeds of supermassive black holes and the rapid formation of massive galaxies, though further observations are needed to map the companions’ separations.

via Live Science|

#direct-collapse-black-hole #early-universe #james-webb-space-telescope