Related Concept Videos
02:39Emission 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.
01:20Atomic 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...
01:29Atomic Emission Spectroscopy: Lab
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...
01:22Atomic Emission Spectroscopy: Instrumentation
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.
01:30Atomic Emission Spectroscopy: Interference
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,...
01:02Flame Photometry: Overview
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...
You might also read
Related Articles
Articles linked to this work by shared authors, journal, and citation graph.
Sort by
Same author
Correction: Mediterranean diet, selenium and Graves' ophthalmopathy: a prospective, randomized, single-center study.
Endocrine·2025
Same author
Mediterranean diet, selenium and Graves' ophthalmopathy: a prospective, randomized, single-center study.
Endocrine·2025
Same author
Tremelimumab and durvalumab as neoadjuvant or non-operative management strategy of patients with microsatellite instability-high resectable gastric or gastroesophageal junction adenocarcinoma: the INFINITY study by GONO.
Annals of oncology : official journal of the European Society for Medical Oncology·2024
Same author
Very low serum IGF-1 levels are associated with vertebral fractures in adult males with beta-thalassemia major.
Journal of endocrinological investigation·2024
Same author
Temporal trends in the clinical presentation of Graves' orbitopathy: a single-center retrospective study.
Journal of endocrinological investigation·2024
Same author
Publisher Correction: RAGE inhibition blunts insulin-induced oncogenic signals in breast cancer.
Breast cancer research : BCR·2023
Same journal
Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.
Science (New York, N.Y.)·2026
Related Experiment Video
Updated: May 25, 2026
06:28
Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
Periodic emission from the gamma-ray binary 1FGL J1018.6-5856.
Fermi LAT Collaboration1, M Ackermann, M Ajello
1W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305, USA.
Science (New York, N.Y.)
|January 17, 2012
Summary
Astronomers discovered a rare gamma-ray binary, 1FGL J1018.6-5856, using the Fermi Large Area Telescope (LAT). This system
Area of Science:
- Astrophysics
- High-energy astrophysics
- Binary star systems
Background:
- Gamma-ray binaries are rare, despite predictions of dozens in our galaxy.
- Their emission originates from interactions between compact objects (neutron stars or black holes) and their companions.
Purpose of the Study:
- To identify and characterize new gamma-ray binaries.
- To investigate the nature of the celestial object 1FGL J1018.6-5856.
Main Methods:
- Utilized data from the Fermi Large Area Telescope (LAT) for gamma-ray observations.
- Identified and analyzed variable X-ray, optical, and radio counterparts.
Main Results:
- 1FGL J1018.6-5856 exhibits periodic modulation in gamma-ray intensity and spectrum with a 16.6-day period.
- A variable X-ray counterpart peaked simultaneously with gamma-ray emission.
- An O6V((f)) star and a modulated radio counterpart were identified.
Conclusions:
- 1FGL J1018.6-5856 is confirmed as a gamma-ray binary.
- The detection of this system implies the existence of other, fainter gamma-ray binaries in the Milky Way.