Global Information Lookup Global Information

Hot dark matter information


Hot dark matter (HDM) is a theoretical form of dark matter which consists of particles that travel with ultrarelativistic velocities.

Dark matter is a form of matter that neither emits nor absorbs light. Within physics, this behavior is characterized by dark matter not interacting with electromagnetic radiation, hence making it dark and rendering it undetectable via conventional instruments in physics.[1] Data from galaxy rotation curves indicate that approximately 80% of the mass of a galaxy cannot be seen, forcing researchers to innovate ways that indirectly detect it through dark matter's effects on gravitational fluctuations.[2] As we shall see below, it is useful to differentiate dark matter into "hot" (HDM) and "cold" (CDM) types–some even suggesting a middle-ground of "warm" dark matter (WDM). The terminology refers to the mass of the dark matter particles (which dictates the speed at which they travel): HDM travels faster than CDM because the HDM particles are theorized to be of lower mass.[3]

  1. ^ McGaugh, Stacy (2007). "Seeing through Dark Matter". Science. 317 (5838): 607–608. doi:10.1126/science.1144534. JSTOR 20037494. PMID 17673645. S2CID 117042201.
  2. ^ Drake, Nadia (2012). "Dark matter, where art thou?". Science News. 181 (10): 5–6. JSTOR 41697649.
  3. ^ Matt Williams (August 31, 2016). "Dark matter—hot or not?". Retrieved June 2, 2017.

and 26 Related for: Hot dark matter information

Request time (Page generated in 0.8339 seconds.)

Hot dark matter

Last Update:

Hot dark matter (HDM) is a theoretical form of dark matter which consists of particles that travel with ultrarelativistic velocities. Dark matter is a...

Word Count : 627

Dark matter

Last Update:

physics: What is dark matter? How was it generated? (more unsolved problems in physics) In astronomy, dark matter is a hypothetical form of matter that appears...

Word Count : 15257

Warm dark matter

Last Update:

Warm dark matter (WDM) is a hypothesized form of dark matter that has properties intermediate between those of hot dark matter and cold dark matter, causing...

Word Count : 944

Cold dark matter

Last Update:

In cosmology and physics, cold dark matter (CDM) is a hypothetical type of dark matter. According to the current standard model of cosmology, Lambda-CDM...

Word Count : 2528

Light dark matter

Last Update:

particles are heavier than warm dark matter and hot dark matter, but are lighter than the traditional forms of cold dark matter, such as Massive Compact Halo...

Word Count : 1651

Direct detection of dark matter

Last Update:

Direct detection of dark matter is the science of attempting to directly measure dark matter collisions in Earth-based experiments. Modern astrophysical...

Word Count : 3741

Mixed dark matter

Last Update:

Mixed dark matter (MDM) is a dark matter (DM) model proposed during the late 1990s. Mixed dark matter is also called hot + cold dark matter. The most...

Word Count : 407

Dark energy

Last Update:

included the Lambda-CDM model and a mixed cold/hot dark matter model. The first direct evidence for dark energy came from supernova observations in 1998...

Word Count : 9668

Axion Dark Matter Experiment

Last Update:

The Axion Dark Matter Experiment (ADMX, also written as Axion Dark Matter eXperiment in the project's documentation) uses a resonant microwave cavity...

Word Count : 1389

Big Bang

Last Update:

matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter...

Word Count : 15920

Universe

Last Update:

form of hot dark matter, dark matter has not been detected directly, making it one of the greatest mysteries in modern astrophysics. Dark matter neither...

Word Count : 16649

Weakly interacting massive particle

Last Update:

are hypothetical particles that are one of the proposed candidates for dark matter. There exists no formal definition of a WIMP, but broadly, it is an elementary...

Word Count : 5469

Scalar field dark matter

Last Update:

Hot dark matter – Theoretical form of dark matter particles which travel near the speed of light Warm dark matter – Hypothesized form of dark matter Fuzzy...

Word Count : 1301

HDM

Last Update:

pistol His Dark Materials, a trilogy of novels by Philip Pullman Hockey Day Minnesota Holistic Data Management Hot dark matter, a form of dark matter House...

Word Count : 151

Cosmic background radiation

Last Update:

radiation as a signature of the Big Bang. Physics portal Space portal Hot dark matter Irradiation Unruh effect "First minutes of the Big Bang". What is USA...

Word Count : 514

List of Dark Matter episodes

Last Update:

Dark Matter is a Canadian science fiction series created by Joseph Mallozzi and Paul Mullie, based on their comic book of the same name and developed...

Word Count : 286

Neutrino

Last Update:

would be hot dark matter. However, the currently known neutrino types seem to be essentially ruled out as a substantial proportion of dark matter, based...

Word Count : 13693

Illustris project

Last Update:

understand the nature of the universe, including galaxy formation, dark matter and dark energy. The simulation included many physical processes which are...

Word Count : 1323

Sterile neutrino

Last Update:

for dark matter because they possess both these properties. Observations suggest that there is more cold dark matter (non-relativistic) than hot dark matter...

Word Count : 4442

Bullet Cluster

Last Update:

spatial distribution of the hot, X-ray-emitting gas, but this gas lags behind the subcluster galaxies. Furthermore, the dark matter clump, revealed by the...

Word Count : 1923

Primordial black hole

Last Update:

considered possibly important if not nearly exclusive components of dark matter, the latter perspective having been strengthened by both LIGO/Virgo interferometer...

Word Count : 6198

Structure formation

Last Update:

times as much dark matter as baryonic matter, and thus the dynamics of the universe in this epoch are dominated by dark matter. Dark matter plays a crucial...

Word Count : 3468

Physical cosmology

Last Update:

cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model...

Word Count : 7591

NGC 4555

Last Update:

elliptical galaxies proven to have significant amounts of dark matter. Large amounts of dark matter are necessary to prevent the gas from escaping the galaxy;...

Word Count : 273

Galactic halo

Last Update:

comprise its halo: the stellar halo the galactic corona (hot gas, i.e. a plasma) the dark matter halo The distinction between the halo and the main body...

Word Count : 1193

Niall Matter

Last Update:

Niall Matter (/ˈnaɪl ˈmeɪtər/ NYLE MAY-tər; born October 20, 1980) is a Canadian-American actor. Following recovery from a serious accident sustained while...

Word Count : 3662

PDF Search Engine © AllGlobal.net