A neutron star is formed by the gravitational collapse of a massive star after a supernova. It has a mass of 1-3 times the sun's mass but is only about 20 km in diameter, making it incredibly dense. The first neutron star was discovered in 1967 by Jocelyn Bell, a graduate student who discovered the first pulsar, a type of neutron star. Neutron stars come in different types, including pulsars which emit beams of electromagnetic radiation and magnetars which have extremely powerful magnetic fields.
Neutron star ,an interesting part of astronomy. sobur hossain
A small work about neutron star which will make you interest in astrophysics ,a fascinating things on this earth.Moreover you will learn some facts about astronomy.
Neutron star ,an interesting part of astronomy. sobur hossain
A small work about neutron star which will make you interest in astrophysics ,a fascinating things on this earth.Moreover you will learn some facts about astronomy.
Contents
Introduction to Pulsar.
Properties of pulsar.
Discovery of pulsar.
Formation of pulsar from neutron star.
Crab pulsar & Binary pulsar.
Mechanism & radiating process of pulsar.
Application & Milestone.
This PPT gives little idea about Space science. and Also helps To gain some good Knowledge about Stars , planets and Galaxies.
The Background phots are also supportive to the Learning content.
Astronomy - White Dwarfs_Neutron Stars_Black Holes.pptxcstrohsnitter1
Basic overview of what happens when stars die. This presentation covers white dwarfs, electron degeneracy pressure, neutron stars, neutron degeneracy pressure, black holes, event horizons and singularities
Brighton Astro - Neutron Star PresentationGareth Jenkins
Presentation from 28th March 2017 to Brighton Astro group. Slideshare removes embedded videos, so two in here are the following:
https://www.youtube.com/watch?v=e-P5IFTqB98&t=18s
https://www.youtube.com/watch?v=NhOVDDiSvMM
Contents
Introduction to Pulsar.
Properties of pulsar.
Discovery of pulsar.
Formation of pulsar from neutron star.
Crab pulsar & Binary pulsar.
Mechanism & radiating process of pulsar.
Application & Milestone.
This PPT gives little idea about Space science. and Also helps To gain some good Knowledge about Stars , planets and Galaxies.
The Background phots are also supportive to the Learning content.
Astronomy - White Dwarfs_Neutron Stars_Black Holes.pptxcstrohsnitter1
Basic overview of what happens when stars die. This presentation covers white dwarfs, electron degeneracy pressure, neutron stars, neutron degeneracy pressure, black holes, event horizons and singularities
Brighton Astro - Neutron Star PresentationGareth Jenkins
Presentation from 28th March 2017 to Brighton Astro group. Slideshare removes embedded videos, so two in here are the following:
https://www.youtube.com/watch?v=e-P5IFTqB98&t=18s
https://www.youtube.com/watch?v=NhOVDDiSvMM
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
2. WHAT IS A NEUTRON STAR
• A neutron star is a type of
compact star that can result
from the gravitational collapse
of a massive star after
supernova.
• Neutron stars are formed by
death of stars.
5. Discovery of neutron star
• The first neutron star
was discovered by
24-year-old graduate
student Jocelyn bell
in 1967.
• she discovered the
first pulsar a type of
neutron star.
7. Facts about neutron star
• It’s mass is in between one and three
sun.
• Neutron star is about 20 km in diameter
• It’s mass is so dense that electron enters
the nucleus and forms a neutron by the
process of electron capture
• e + p
9. Pulsar
• A Pulsar is a highly
magnetized,
rotating neutron star.
• That emits a beam
of electromagnetic
radiation.
• This radiation can
only be observed
when the beam of
emission is pointing
toward Earth
10. Magnetar
• A magnetar is a type
of neutron star with
an extremely
powerful magnetic
field.
• The magnetic field
decay powers the
emission of high-
energy
electromagnetic
radiation, particularly
X-rays and gamma
rays.
12. Neutron star Vs black hole
• Neutron star stand
nothing infront of
black hole
• Because gravity of
black hole is much
more the that of
neutron star
14. Nearest neutron star
• Astronomers using X-ray telescope
have detected a neutron star within
250 to 1,000 light-years of Earth,
making it the closest neutron star
ever known.
• There is zero possibility that a
neutron star will going to hit the
earth.
