Results 1 to 4 of 4
Like Tree10Likes
  • 5 Post By kanadalainen
  • 4 Post By not_Fritz_Argelander
  • 1 Post By michael131313

Thread: NASA's Fermi scope highlights gamma trap in galactic core

  1. #1
    kanadalainen's Avatar
    kanadalainen is offline HYPER GIANT
    Points: 29,241, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Winnipeg
    Posts
    2,941
    Points
    29,241
    Level
    100
    Thanks
    2,941
    Thanked 2,394x 1,050 Posts

    Default NASA's Fermi scope highlights gamma trap in galactic core



    Cosmic rays zip through space and occasionally interact with matter to release gamma radiation. NASA fancy scope has revealed a gamma "trap" at the centre of the Milky Way. The article fails to mention (or speculate as to) what the putative trap actually is.

    https://phys.org/news/2017-07-gamma-...gy-galaxy.html
    Last edited by kanadalainen; 07-19-2017 at 07:36 PM.
    Ian
    Scopes Celestron - Vixen 80 f11.3 on a Vixen alt/az mount and an Orion dob XT10i f4.7
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70 Camera Nikon D90 with Rokinon 10mm
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

  2. The Following 4 Users Say Thank You to kanadalainen For This Useful Post:

    bladekeeper (07-19-2017),helicon64 (07-20-2017),not_Fritz_Argelander (07-19-2017),pikaia (07-20-2017)

  3. #2
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is online now HYPER GIANT
    Points: 183,508, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 96.0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    22,043
    Points
    183,508
    Level
    100
    Thanks
    7,254
    Thanked 46,402x 14,959 Posts
    Blog Entries
    59

    Default Re: NASA's Fermi scope highlights gamma trap in galactic core

    The paper on arXiv
    https://arxiv.org/abs/1702.01124

    models the trap by using a cosmic ray diffusion model that has a position dependent coefficient of diffusion. Hydrogen gas with varying density provides the coefficient of diffusion and its variability. Nothing exotic is required.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    : Refractors:

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    EQG

  4. The Following 5 Users Say Thank You to not_Fritz_Argelander For This Useful Post:

    bladekeeper (07-19-2017),chas53 (07-22-2017),helicon64 (07-20-2017),kanadalainen (07-19-2017),michael131313 (07-19-2017)

  5. #3
    michael131313's Avatar
    michael131313 is offline SUPER GIANT
    Points: 13,034, Level: 78
    Level completed: 82%, Points required for next Level: 66
    Overall activity: 0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Aug 2016
    Location
    San Jose del Valle, Nayarit, Mexico
    Posts
    1,158
    Points
    13,034
    Level
    78
    Thanks
    3,234
    Thanked 344x 270 Posts

    Default Re: NASA's Fermi scope highlights gamma trap in galactic core

    Thanks Ian. I am always fascinated about gamma rays.
    kanadalainen likes this.
    ES AR 102 102mm, f/6.5,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Starblast 4.5 114mm,f/4 , Celestron 10x50, GSO SV 30mm, ES 68° 20mm, ES 82° 14mm, 11mm, 8.8 mm, 6.8mm, 4.7mm. Twilight 1 mount.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    [

  6. The Following User Says Thank You to michael131313 For This Useful Post:

    helicon64 (07-20-2017)

  7. #4
    kanadalainen's Avatar
    kanadalainen is offline HYPER GIANT
    Points: 29,241, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Winnipeg
    Posts
    2,941
    Points
    29,241
    Level
    100
    Thanks
    2,941
    Thanked 2,394x 1,050 Posts

    Default Re: NASA's Fermi scope highlights gamma trap in galactic core

    Quote Originally Posted by michael131313 View Post
    Thanks Ian. I am always fascinated about gamma rays.
    A pleasure.
    Ian
    Scopes Celestron - Vixen 80 f11.3 on a Vixen alt/az mount and an Orion dob XT10i f4.7
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70 Camera Nikon D90 with Rokinon 10mm
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

 

 

Similar Threads

  1. Fermi gamma ray DM evidence weakens
    By not_Fritz_Argelander in forum Astrophysics Forum
    Replies: 6
    Last Post: 05-02-2017, 09:43 PM
  2. Fermi gamma ray telescope team gives up
    By not_Fritz_Argelander in forum Astrophysics Forum
    Replies: 4
    Last Post: 11-13-2015, 06:48 PM
  3. Replies: 0
    Last Post: 08-01-2014, 05:07 AM
  4. FERMI Gamma-Ray Telescope & Milky Way
    By laney50w in forum General Astronomy Forum
    Replies: 2
    Last Post: 11-19-2010, 06:45 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 04:18 PM.