[Aavso-sid-list] Aavso-sid-list Digest, Vol 60, Issue 4

Kevin Finley deaddrift2006 at hotmail.com
Thu Feb 26 22:42:02 EST 2009


wonder if I could get some help here,im looking to build the gyrator 3 ,getting boards for a supplier ,but cant seem to find a picture or parts list of said radio,and the one link I was sent wont open ,can someone from this list point me in the right direction 

thx 

kevin
 
> From: aavso-sid-list-request at aavso.org
> Subject: Aavso-sid-list Digest, Vol 60, Issue 4
> To: aavso-sid-list at aavso.org
> Date: Thu, 26 Feb 2009 12:00:02 -0500
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> 1. SGR burst times (arne)
> 
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> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 25 Feb 2009 19:54:36 -0500
> From: arne <arne at aavso.org>
> Subject: [Aavso-sid-list] SGR burst times
> To: AAVSO SID List <aavso-sid-list at aavso.org>
> Message-ID: <49A5E84C.8050409 at aavso.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Here is the latest GCN circular, which gives the burst times
> from the new SGR. I mentioned this a couple of weeks ago,
> but forgot that you can't attach anything to posts. Look through
> your logs and see if you have SID matches with any of these
> dates and times. If we have more than one observer matching
> on a given burst, then it stands a chance of being a real detection.
> Thanks, folks!
> Arne
> -----------------------
> TITLE: GCN CIRCULAR
> NUMBER: 8915
> SUBJECT: SGR J1550-5418
> DATE: 09/02/26 00:34:30 GMT
> FROM: Chryssa Kouveliotou at MSFC <chryssa.kouveliotou at nasa.gov>
> 
> SGR J1550-5418 (former AXP 1E 1547.0-5408): list of triggers from the Fermi 
> Gamma-ray Burst Monitor (GBM)
> 
> C. Kouveliotou (NASA-MSFC), A. von Kienlin (MPE), G. Fishman (NASA-MSFC), V. 
> Connaughton (UAH), A. van der Horst (NASA-MSFC/ORAU), and N. Bhat (UAH), report 
> on behalf of the Fermi GBM Team:
> 
> During the current active period of SGR J1550-5418 which began on 22 January 
> 2009 (GCNs 8833, 8835), the Fermi Gamma-ray Burst Monitor (GBM) has triggered on 
> 117 discrete bursts through 24 February, of which 15 were extremely intense. 
> Additionally, a multitude of untriggered events have also been recorded over the 
> same period. The source is still active, but with a decreased rate of triggers 
> to ~twice per day, with exceptionally intense bursts occurring about once per 
> week. A list of all Fermi GBM triggers from SGR J1550-5418 in the time interval 
> above, with the particularly intense events noted by an asterisk, is given at: 
> http://gammaray.nsstc.nasa.gov/gbm/science/magnetars. NOTE: our trigger times 
> are not necessarily the same as event peak times, depending on the event 
> durations, which range from milliseconds to 1-2 sec.
> 
> Many of the intense bursts from SGR J1550-5418 are expected to produce 
> measurable ionospheric disturbances, as recorded by observations of VLF radio 
> propagation (GCNs 8881, 8900). Observations of these disturbances over 
> different elevation angles could provide unique insight into the low energy (<2 
> keV) emission from this SGR during bursts, as well as the total ionizing X-ray 
> fluence deposited in the upper atmosphere. Correlations of these outbursts with 
> data from detectors on other spacecraft are also encouraged. Analyses of the 
> duration, peak fluxes, fluences and spectral characteristics of these events 
> from GBM data are in progress.
> 
> Finally, we would like to stress that the source bursting behavior clearly 
> classifies it as a Soft Gamma Repeater, contrary to the initial classification 
> as an Anomalous X-ray Pulsar (AXP) by Camilo et al. (2007, ApJL 666, 93), who 
> only used the persistent source spectrum and pulsation period for a tentative 
> classification. Similar to the Swift team (GCN 8901) therefore, we will call the 
> source out as SGR J1550-5418 in the future.
> 
> 
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