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 Experiment Video

Updated: Dec 11, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

22.3K

Testing The Lamp-Post and Wind Reverberation Models with XMM-Newton Observations of NGC 5506.

Abderahmen Zoghbi1, Sihem Kalli2, Jon M Miller1

  • 1Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA.

The Astrophysical Journal
|August 18, 2020
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

Flame Photometry: Lab01:16

Flame Photometry: Lab

707
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
707
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

457
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
457
Flame Photometry: Overview01:02

Flame Photometry: Overview

1.2K
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
1.2K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

1.0K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.0K
Emission Spectra02:39

Emission Spectra

74.9K
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.
74.9K
Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

498
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
498

You might also read

Related Articles

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

Sort by
Same author

Coronavirus disease-19 mortality among solid organ transplant recipients in the United States during June and December 2020: Comparison of Organ Procurement and Transplantation Network and National Death Index data.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons·2023
Same author

Quantification of Risperidone Contained in Precipitates Produced by Tea Catechins Using Nuclear Magnetic Resonance.

Chemical & pharmaceutical bulletin·2023
Same author

Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1.

Science (New York, N.Y.)·2022
Same author

Hitomi X-ray studies of Giant Radio Pulses from the Crab pulsar.

Publications of the Astronomical Society of Japan. Nihon Tenmon Gakkai·2020
Same author

The response of relativistic outflowing gas to the inner accretion disk of a black hole.

Nature·2017
Same author

Ultraluminous X-ray bursts in two ultracompact companions to nearby elliptical galaxies.

Nature·2016

This study tested models of accreting black holes using X-ray data from galaxy NGC 5506. Neither static lamp-post nor simple wind models fully explain the observed X-ray time lags and spectral features.

Area of Science:

  • Astrophysics
  • High-energy astrophysics
  • Black hole accretion physics

Background:

  • The lamp-post geometry is a common model for accreting black hole X-ray data, aiding in inferring properties like spin.
  • X-ray reverberation studies initially supported simple models, but wind-reverberation models also explain observed time delays.

Purpose of the Study:

  • To test static lamp-post and wind-reverberation models using new and archival XMM-Newton observations of the Seyfert-1 galaxy NGC 5506.
  • To analyze the spectral and timing signatures of an emission line feature around 6.7 keV observed in NGC 5506.

Main Methods:

  • Analysis of XMM-Newton observations of NGC 5506.
  • Modeling of spectral features, including a 6.7 keV emission line.
  • Timing analysis to measure energy-dependent time lags.

More Related Videos

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

10.8K
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.3K

Related Experiment Videos

Last Updated: Dec 11, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

22.3K
Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

10.8K
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.3K
  • Comparison of observed spectral and timing signatures with predictions from lamp-post and wind models.

    • Main Results:

    • A significant time lag was detected for an emission line feature around 6.7 keV relative to harder and softer energy bands.
    • The spectral feature could be modeled as either a weakly relativistic disk line or scattering from distant material.
    • The reflection fraction required to explain the observed lags exceeded that observed in the time-averaged spectrum.

    Conclusions:

    • Both static lamp-post and simple wind reverberation models are ruled out for NGC 5506.
    • The observed spectral and timing signatures suggest a more complex accretion geometry or physics than these simple models.
    • Further investigation into alternative models is needed to fully understand the accretion processes in NGC 5506.