Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Atomic Nuclei: Larmor Precession Frequency01:11

Atomic Nuclei: Larmor Precession Frequency

The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession, and the angular frequency...
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
Detection of Black Holes01:10

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...
Schwarzschild Radius and Event Horizon01:21

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 velocity with the...
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
¹H NMR Signal Multiplicity: Splitting Patterns01:13

¹H NMR Signal Multiplicity: Splitting Patterns

When protons A and X are coupled, their nuclear spin energy levels are slightly modified. This is because the energy required to excite proton A to a spin state parallel to proton X is slightly different from the energy required for it to become anti-parallel to spin X. Consequently, there are two possible excitation frequencies for A (A1 and A2), depending on the spin state of X, and vice versa. The mutual nature of coupling implies that the difference between frequencies A1 and A2, indicated...

You might also read

Related Articles

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

Sort by
Same author

Retraction Note: Sub-second periodicity in a fast radio burst.

Nature·2026
Same author

Producing Fraud at the Welfare-Migration Nexus: Migrant Families and Children's Social Care.

The British journal of sociology·2026
Same author

Body Surface Gastric Mapping (BSGM): Is This the Future Standard of Care Noninvasive Test for Gastric Symptoms in Pediatrics?

Neurogastroenterology and motility·2026
Same author

Trends in Inpatient Health Care Utilization for Children with Feeding Difficulties.

The Journal of pediatrics·2026
Same author

Alcohol Misuse in Older Women: A Scoping Review of Correlates, Consequences, Treatment, and Prevention.

Alcohol research : current reviews·2026
Same author

Association between blenderized tube feeds and differential oropharynx, stomach, and stool microbiome signatures relative to conventional formula feeds in children fed via enteral tube: A cross-sectional study.

JPEN. Journal of parenteral and enteral nutrition·2026
Same journal

Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".

Science (New York, N.Y.)·2026
Same journal

Local signals, systemic decline.

Science (New York, N.Y.)·2026
Same journal

The mechanics of liver regeneration.

Science (New York, N.Y.)·2026
Same journal

Computing in a memory with physics.

Science (New York, N.Y.)·2026
Same journal

Retraction.

Science (New York, N.Y.)·2026
Same journal

Making time.

Science (New York, N.Y.)·2026
See all related articles

Related Experiment Video

Updated: Jun 23, 2026

Hyperpolarized Xenon for NMR and MRI Applications
16:20

Hyperpolarized Xenon for NMR and MRI Applications

Published on: September 6, 2012

A radio pulsar/x-ray binary link.

Anne M Archibald1, Ingrid H Stairs, Scott M Ransom

  • 1Department of Physics, McGill University, 3600 Rue University, Montréal, Quebec, H3A 2T8, Canada. aarchiba@physics.mcgill.ca

Science (New York, N.Y.)
|May 23, 2009
PubMed
Summary
This summary is machine-generated.

Researchers detected a nearby radio millisecond pulsar (MSP) in a binary system. This discovery suggests the pulsar recently transitioned from a low-mass X-ray binary (LMXB) phase, indicated by the absence of a current accretion disk.

More Related Videos

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
06:46

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

Published on: August 25, 2016

Related Experiment Videos

Last Updated: Jun 23, 2026

Hyperpolarized Xenon for NMR and MRI Applications
16:20

Hyperpolarized Xenon for NMR and MRI Applications

Published on: September 6, 2012

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
06:46

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

Published on: August 25, 2016

Area of Science:

  • Astronomy and Astrophysics
  • Compact Objects
  • Binary Systems

Background:

  • Millisecond pulsars (MSPs) are rapidly spinning neutron stars believed to be spun up by mass transfer from a companion star.
  • Low-mass X-ray binary (LMXB) systems are theorized progenitors of MSPs, but direct observational links remain elusive.
  • Previous searches for radio pulsations in LMXBs have not yielded definitive detections.

Purpose of the Study:

  • To report the detection of a new radio millisecond pulsar (MSP).
  • To investigate the evolutionary state of a nearby MSP system with an optically identified companion.
  • To explore the transition from low-mass X-ray binary (LMXB) phase to active radio pulsar phase.

Main Methods:

  • Detection of radio pulsations from a millisecond pulsar.
  • Follow-up observations including optical photometry and spectroscopy.
  • Analysis of optical data to identify the presence or absence of an accretion disk.

Main Results:

  • A nearby radio millisecond pulsar (MSP) was successfully detected and observed.
  • The system exhibits a circular binary orbit with an optically identified companion star.
  • Optical observations indicate the recent disappearance of an accretion disk, suggesting the cessation of mass transfer.

Conclusions:

  • The detected radio MSP likely transitioned from a low-mass X-ray binary (LMXB) phase.
  • The absence of a current accretion disk points to a recent LMXB phase.
  • This finding provides observational evidence for the spin-up model of millisecond pulsar formation.