Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Emission Spectra

Emission Spectra

When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.

Nuclear Fusion

Nuclear Fusion

The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...

Detection of Black Holes

Detection of Black Holes

Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...

Atomic Emission Spectroscopy: Overview

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...

Schwarzschild Radius and Event Horizon

Schwarzschild Radius and Event Horizon

No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape...

Thomson's e/m Experiment

Thomson's e/m Experiment

In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Spherical symmetry in the kilonova AT2017gfo/GW170817.

Nature·2023

Same author

A transient radio source consistent with a merger-triggered core collapse supernova.

Science (New York, N.Y.)·2021

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 28, 2025

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Stripped-envelope supernova light curves argue for central engine activity.

Ósmar Rodríguez¹, Ehud Nakar², Dan Maoz¹

¹School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel.

|April 17, 2024

Summary

This summary is machine-generated.

Stripped-envelope supernovae may have a non-radioactive power source. Analysis of 54 supernovae suggests a central engine, possibly forming magnetars, powers these stellar explosions.

More Related Videos

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

Related Experiment Videos

Last Updated: Jun 28, 2025

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

Area of Science:

Astronomy and Astrophysics
Stellar Evolution
Supernova Physics

Background:

Stripped-envelope supernovae (SESNe) are common stellar explosions.
Their luminosity is primarily attributed to radioactive nickel decay.
Previous studies suggested additional energy sources, but lacked statistical significance or were model-dependent.

Purpose of the Study:

To investigate the energy budget of SESNe.
To find observational evidence for non-radioactive power sources in SESNe.
To constrain the properties of potential central engines.

Main Methods:

Analysis of the energy budget of 54 well-observed SESNe.
Model-independent observational comparisons.
Evaluation of possible energy sources and systematic errors.

Main Results:

Statistically significant evidence for a non-radioactive power source in most SESNe.
This power source likely originates from a long-lived central engine (10^3-10^6 s post-explosion).
If the engine is a magnetar, initial magnetic fields are ~10^15 G and rotation periods are 1-100 ms.

Conclusions:

SESNe likely possess a central engine beyond radioactive decay.
This engine may be responsible for the formation of magnetars.
Further research can refine the properties of these engines.