An Unidentified Ultra-Steep Spectrum Source

Details An Unidentified Ultra-Steep Spectrum Source An Unidentified Ultra-Steep Spectrum Source

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..843l&link_type=abstract

Chandra Proposal ID #03500278

Physics

Chandra Proposal Id #03500278

Scientific paper

Known classes of sources with radio spectra steeper than -1 (S ~ nu^alpha) include pulsars, high-z radio galaxies, fossil radio galaxies, and cluster relics. As a routine process in our analysis of VLA 74 MHz images, we look for, and generally find, higher frequency counterparts to all 74 MHz sources. We have discovered a 74 MHz source with no higher frequency counterparts, implying that its spectrum is steeper than -2.5. Although its spectrum is consistent with that of many short-period pulsars, a 430 MHz periodicity search at Arecibo Observatory was unsuccessful. However, pulse broadening, scintillation, an ultra-steep radio spectrum, or orbital motion would reduce our sensitivity. X-ray observations are immune to these effects. We request 8 ks in an effort to detect this source.

Affiliated with

Also associated with

No associations

Rating

An Unidentified Ultra-Steep Spectrum Source does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An Unidentified Ultra-Steep Spectrum Source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Unidentified Ultra-Steep Spectrum Source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1488374