Tag

Nova

All articles tagged with #nova

space18 days ago•98 min saved

The Blaze Star Could Light Up the Night: T Coronae Borealis May Go Nova This Week

Astronomers say the recurring nova in the T Coronae Borealis system could erupt at any time, briefly brightening from a dim +10 magnitude to about +2—bright enough to see with the naked eye for roughly a week. Known as the Blaze Star, T CrB brightens every ~80 years and has only a handful of observed eruptions; predictions for the next outburst vary and none are confirmed. If it occurs, observers in Corona Borealis can use binoculars or a small telescope to track its evolution and watch for a rare, sky-changing event.

via Space|

#astronomy #blaze-star #corona-borealis

science19 days ago•5 min saved

T Coronae Borealis: The Naked-Eye Nova Could Happen Any Moment

Astronomers say the 3,000-light-year binary system T Coronae Borealis could erupt as a nova soon. The red giant–white dwarf pair accretes gas until a thermonuclear runaway brightens the system to naked-eye visibility for about two days; predictions for 2024 missed the mark due to uncertainties in the accretion rate, but the eruption is considered imminent by some researchers. The last outburst was in 1946, and observers continue to monitor the system for a potential event in the coming months to years.

via CBC|

#binary-star #nova #red-giant

space5 months ago•3 min saved

Novae Unveiled: Real-Time Interferometry Reveals Multi-Stage Ejections and Gamma Rays

Astronomers using the CHARA Array and other telescopes captured real-time images of two novae (V1674 Herculis and V1405 Cassiopeiae), revealing complex, multi-stage gas outflows and gamma-ray emissions—showing that nova explosions are not single blasts and linking surface nuclear processes to the geometry of ejected material and high-energy radiation.

via Futurism|

#binary-star #gamma-rays #interferometry

space5 months ago•26 min saved

Novae Unleash Dual Jets: High-Res Images Rewrite Stellar Explosions

High-resolution CHARA Array images of 2021 novae V1674 Herculis and V1405 Cassiopeiae reveal complex, jet-driven eruptions in binary white-dwarf systems, including perpendicular outflows and a delayed ejection likely tied to a common-envelope phase. The gamma-ray signals observed by NASA’s Fermi coincide with internal shocks in the debris, linking surface nuclear reactions to high-energy radiation and challenging the idea of novae as simple spherical shells. These findings, published in Nature Astronomy, position novae as natural laboratories for extreme physics.

via ZME Science|

#binary-system #gamma-rays #interferometry

space5 months ago•6 min saved

High‑Res Imaging Reveals Dual Ejecta in Nova Explosions

Scientists using the CHARA Array’s near-infrared interferometry captured high‑resolution images of two novae (V1674 Herculis and V1405 Cassiopeiae), showing non‑spherical, interacting ejecta and fast/slow evolution, with a gamma-ray connection that challenges the idea of a single impulsive explosion.

via WIRED|

#ejecta #gamma-rays #interferometry

science5 months ago•5 min saved

Earth-Spanning Neutrino Study Tightens the Mass-Mixing Mystery

Physicists from NOvA (U.S.) and T2K (Japan) merged data from two long-baseline neutrino experiments to sharpen measurements of neutrino oscillations, reducing the uncertainty on the mass-squared difference to under 2% and clarifying CP-violation effects, with implications for the matter–antimatter imbalance in the universe.

via Indian Defence Review|

#cp-violation #neutrino-oscillation #neutrinos

science8 months ago•64 min saved

Global Study Unveils New Insights into Neutrinos and Matter's Existence

A joint analysis of neutrino oscillation data from the T2K and NOvA experiments provides improved constraints on oscillation parameters, including the mixing angle θ23, mass-squared difference Δm32², and the CP-violating phase δCP, with no significant preference for either mass ordering but evidence suggesting potential CP violation, especially under the inverted mass ordering assumption.

via Nature|

#cp-violation #mass-ordering #neutrino-oscillation

science9 months ago•2 min saved

First Alert Weather: The Rare 'Blaze Star' Phenomenon

Rochester has a rare chance to observe the 'Blaze Star' (T Coronae Borealis), a binary star system that periodically erupts in a nova, becoming temporarily visible in the night sky. The star last appeared in 1946 and could reappear anytime from now through next year, offering a once-in-a-lifetime viewing opportunity for about a week.

via WHEC.com|

#astronomical-event #binary-star-system #blaze-star

scienceastronomy9 months ago•4 min saved

Potential Naked-Eye Visibility of New Nova in Centaurus

A potential new nova has been observed in the constellation Centaurus, possibly visible to the naked eye from dark-sky locations, and was discovered by John Seach. The nova is a stellar explosion involving a white dwarf and a companion star, and its exact distance remains unknown.

via EarthSky|

#astronomy #centaurus #nova

science1 year ago•5 min saved

Rare Double Nova Explosion Lights Up the Southern Sky

Two rare naked-eye nova explosions, V572 Velorum and V462 Lupi, are currently visible in the southern hemisphere sky, an exceedingly rare event that may soon fade from view, caused by thermonuclear explosions on white dwarf stars in binary systems.

via Space|

#astronomy #night-sky #nova

science1 year ago•2 min saved

Rare Double Nova Explosion Lights Up the Night Sky

Two novae, V572 Velorum and V462 Lupi, have appeared simultaneously in the night sky, an extremely rare event, with both now visible to the naked eye in the Southern Hemisphere. This coincidence occurs as astronomers anticipate the explosion of T Coronae Borealis, which is expected roughly every 80 years. Such simultaneous nova events are unprecedented and highlight the rarity of these cosmic phenomena.

via Forbes|

#astronomy #nova #rare-event

science1 year ago•4 min saved

Rare Double Nova Event Visible to the Naked Eye in the Night Sky

Two rare classical novas, V462 Lupi and V572 Velorum, have been simultaneously visible to the naked eye in the night sky, an unprecedented event in recorded history, highlighting a rare astronomical occurrence of multiple stellar explosions occurring at once.

via Live Science|

#astronomy #night-sky #nova

science1 year ago•3 min saved

Bright Nova Illuminates Lupus Constellation for Skywatchers

A nova called V462 Lupi, which was initially too dim to see, has brightened dramatically after an explosion, making it visible to the naked eye in the Lupus constellation. The event was caused by a white dwarf star in a binary system undergoing a classical nova explosion. It can be observed with binoculars near the stars Delta Lupi and Kappa Centauri, especially from the southern hemisphere, before it fades from view.

via Space|

#astronomy #lupus-constellation #night-sky

science1 year ago•3 min saved

How to Spot the Lupus Constellation's Exploding Star This Month

A nova called V462 Lupi, which was initially too dim to see with the naked eye, has dramatically brightened after a stellar explosion, making it visible in the night sky near the Lupus constellation. The event was caused by a white dwarf in a binary system undergoing a fusion explosion, and it can be observed with binoculars or the naked eye before it fades from view. The best viewing time is around the new moon, especially for observers in the southern hemisphere.

via Yahoo|

#astronomy #lupus-constellation #night-sky

science1 year ago•2 min saved

Bright Nova Illuminates Night Sky Visible Across North America

A new nova, V462 Lupi, has appeared in the night sky and is now visible to the naked eye, brightening over 3 million times due to a stellar explosion involving a white dwarf and a companion star in the Lupus constellation, offering skywatchers a rare and dramatic celestial event.

via IFLScience|

#astronomy #night-sky #nova