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Little Red Dots

All articles tagged with #little red dots

Webb’s Red Dots Point to Black Hole Feeding Inside Gas Clouds
space16 hours ago

Webb’s Red Dots Point to Black Hole Feeding Inside Gas Clouds

JWST has identified over 300 mysterious red-tinted ‘little red dots’ whose origin remains unknown. A new Chandra X-ray Observatory paper reports that one LRD, 3DHST-AEGIS-12014, emits X-rays, aligning with the idea that some LRDs are a transient phase in which a supermassive black hole accretes material from a surrounding gas cloud; X-rays can escape during this process, making the dot visible. If this is correct, these dots should fade as the cloud is consumed, and continued observations including ongoing support for Chandra will be needed to catch such a transition.

via Hackaday|
#astronomy#black-holes#chandra-x-ray-observatory
X-ray Dot in the Dawn of the Universe Signals Transitional Black Hole Growth
space15 days ago

X-ray Dot in the Dawn of the Universe Signals Transitional Black Hole Growth

Astronomers using JWST have spotted hundreds of compact “little red dots” in the early universe; among them, 3DHST-AEGIS-12014 stands out for its X‑ray emission, suggesting it may be a transitional object between a black‑hole–related phase and the growth of a supermassive black hole in a forming galaxy. If confirmed, this rare LRD could help explain how SMBHs began to grow in the first billions of years, though its exact nature, environment, and evolution remain open questions and will require further observations.

via ScienceAlert|
#3dhst-aegis-12014#black-holes#little-red-dots
X-Ray Little Red Dot Hints at a Bridge in Early Black Hole Growth
science15 days ago

X-Ray Little Red Dot Hints at a Bridge in Early Black Hole Growth

Astronomers using JWST and Chandra found an unusual X-ray-bright “little red dot” (3DHST-AEGIS-12014) about 11.8 billion light-years away, suggesting it may be a transitional object linking black hole stars to the growth of early supermassive black holes. Its X-ray emission could escape through holes in surrounding gas clouds, explaining variability and offering a potential link between LRDs and SMBHs in the young universe, though further observations are needed to confirm the scenario and its implications for black hole formation.

via Universe Today|
#early-universe#jwst#little-red-dots
X-ray Dot Could Unmask Webb's Little Red Dots
space16 days ago

X-ray Dot Could Unmask Webb's Little Red Dots

A newly analyzed X-ray source, nicknamed the X-ray dot, observed by Chandra and later in JWST fields, may explain the Webb-detected “little red dots” by showing that these early-universe black holes are enshrouded in dense gas that blocks X-rays; as accretion progresses, gaps in the cocoon can form, allowing X-rays to escape and revealing the black hole’s interior. This supports the idea that little red dots are young supermassive black holes in rapid growth, with future observatories like the Roman Space Telescope expected to help find modern analogues and further illuminate black hole evolution in the early universe.

via Live Science|
#chandra-x-ray-observatory#early-universe#james-webb-space-telescope
Distant X-ray Dot Could Unveil How Early Black Holes Grew
space25 days ago

Distant X-ray Dot Could Unveil How Early Black Holes Grew

Astronomers using Webb and Chandra detected a faint, compact red source about 11.8 billion light-years away (3DHST-AEGIS-12014) that emits X-rays, unlike most little red dots. This could represent a transitional phase where a rapidly growing black hole is still buried in dense gas, helping link the LRD population to conventional active black holes and refining models of black hole formation in the early universe, though alternative explanations exist and further observations are needed.

via The Daily Galaxy|
#black-holes#chandra-x-ray-observatory#early-universe
JWST Dots May Be Black Hole–Powered Clouds, New X-Ray Clue Emerges
science26 days ago

JWST Dots May Be Black Hole–Powered Clouds, New X-Ray Clue Emerges

A match between JWST observations of distant, cool “little red dots” and archival Chandra X-ray data has found an X-ray source at one dot’s location, bolstering the idea that these objects are gas clouds hosting growing supermassive black holes and possibly representing a transitional stage in how black holes and their host galaxies form.

via Yahoo|
#black-holes#galaxy-formation#james-webb-space-telescope
Webb’s X-ray Finds Hint that ‘Little Red Dots’ Harbor Baby Black Holes
space27 days ago

Webb’s X-ray Finds Hint that ‘Little Red Dots’ Harbor Baby Black Holes

JWST observations of the enigmatic 'little red dots' align with a Chandra X-ray source at 3DHST-AEGIS-12014, bolstering the idea that these distant, cool gas clouds host growing supermassive black holes. The X-ray detection suggests a transitional phase in SMBH growth inside a gas cloud, offering a potential window into how black holes and their host galaxies form and evolve in the early universe (around 11.8–12 billion years ago).

via Space|
#black-holes#galaxy-formation#james-webb-space-telescope
Webb reveals transitional 'Stingray' galaxy linking little red dots to AGN
astronomy1 month ago

Webb reveals transitional 'Stingray' galaxy linking little red dots to AGN

Astronomers using the James Webb Space Telescope have identified a compact galaxy nicknamed the 'stingray' that sits at a crossroads between the mysterious little red dots and compact Type I AGN. The system, which appears distorted due to interaction with a nearby companion, shows signs of accelerated growth and supports the idea that little red dots are short-lived evolutionary phases rather than a distinct galaxy class. While this transitional object strengthens the link between LRDs and AGN, questions about the central black hole mass and the broader implications for galaxy formation remain, underscoring JWST’s power to illuminate early-universe dynamics.

via The Daily Galaxy|
#active-galactic-nuclei#astronomy#galaxy-evolution
JWST Dots May Be Young Globular Clusters, Not Baby Black Holes
space2 months ago

JWST Dots May Be Young Globular Clusters, Not Baby Black Holes

A Space.com analysis of James Webb Space Telescope data suggests the mysterious “Little Red Dots” from the early universe could be newborn globular clusters rather than proto-black holes. A new arXiv study proposes these LRDs host very young stellar populations, potentially powered by an extremely massive, short‑lived star, which could explain their distinctive V‑shaped spectrum. The observed redshift range aligns with metal‑poor globular clusters, and the team estimates a global formation density around 0.3 per cubic megaparsec, similar to the number of globular clusters today. If confirmed, this would provide a direct window into early globular cluster formation, though future spectroscopy tracking chemical signatures (like helium and nitrogen enhancements, and specific element anti-correlations) will be crucial to test the hypothesis.

via Space|
#early-universe#galaxy-formation#globular-clusters
Webb telescope spots mysterious red dots that baffle scientists
science2 months ago

Webb telescope spots mysterious red dots that baffle scientists

NASA’s James Webb Space Telescope images reveal hundreds of faint red dots dubbed little red dots (LRDs). While many researchers suspect they are powered by growing black holes in the early universe, their exact nature remains unclear, with hypotheses ranging from dust-enshrouded black holes to emission from dense hydrogen gas, and even a possible new class of objects called black-hole stars or quasi-stars, exemplified by the enigmatic feature “The Cliff.” The findings could reshape ideas about black-hole formation, but there is no consensus yet.

via Yahoo News Canada|
#black-holes#early-universe#james-webb
Webb telescope uncovers mysterious red dots, leaving scientists guessing
science2 months ago

Webb telescope uncovers mysterious red dots, leaving scientists guessing

NASA's James Webb Space Telescope has detected hundreds of tiny red points—dubbed little red dots (LRDs)—in deep-field images. Their nature remains uncertain, with leading ideas ranging from growing black holes shrouded by gas or dust to exotic 'black hole star' or quasi-star scenarios, and even hints from discoveries like 'The Cliff' that a new kind of cosmic object may exist; researchers hope closer local LRDs and continued Webb observations will reveal how these objects fit into black hole formation and galaxy evolution.

via Yahoo|
#black-holes#james-webb#little-red-dots
Webb’s Little Red Dots Spark New Theories on Black Hole Birth
space2 months ago

Webb’s Little Red Dots Spark New Theories on Black Hole Birth

The James Webb Space Telescope has captured hundreds of tiny red dots in deep-field images whose nature remains mysterious; early ideas centered on distant galaxies or dust-enshrouded black holes, but current thinking leans toward growing black holes surrounded by dense hydrogen gas, or even a new class called black hole stars (quasi-stars). A notable case nicknamed “The Cliff” challenges previous explanations and hints at exotic physics, but most LRDs are extremely distant and consensus awaits more nearby examples and data to settle their origins.

via CNN|
#black-holes#little-red-dots#quasi-stars
Early-Universe Red Dots Hint at Overmassive Black Holes
science2 months ago

Early-Universe Red Dots Hint at Overmassive Black Holes

JWST observations reveal numerous compact ‘little red dots’ in the early universe whose spectra show active galactic nucleus features, suggesting central black holes. Some dots, notably the Virgil Galaxy, appear normal in UV/optical light but harbor an exceptionally massive black hole detected in mid‑infrared, challenging current growth models. A leading idea—quasi-stars—posits black holes inside dense gas cocoons that could skew mass estimates. These findings could reshape how we understand black hole formation in the first billions of years and motivate deeper mid‑infrared surveys for more such objects.

via BBC Sky at Night Magazine|
#agn#early-universe#james-webb-space-telescope