Radio detection of 18 RASS BL Lac objects
We present the radio detection of 18 BL Lac objects from our survey of over 575 deg2 of sky. These 18 objects are located within 20'' of the X-ray position, of which 11 have a measured red-shift. All candidates are radio emitters above ~1 mJy and fall within the range of existing samples o...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Astronomical Observatory, Department of Astronomy, Belgrade
2009-01-01
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| Series: | Serbian Astronomical Journal |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-698X/2009/1450-698X0979007A.pdf |
| _version_ | 1818683035984330752 |
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| author | Anderson M.W.B. Filipović M.D. |
| author_facet | Anderson M.W.B. Filipović M.D. |
| author_sort | Anderson M.W.B. |
| collection | DOAJ |
| description | We present the radio detection of 18 BL Lac objects from our survey of over 575 deg2 of sky. These 18 objects are located within 20'' of the X-ray position, of which 11 have a measured red-shift. All candidates are radio emitters above ~1 mJy and fall within the range of existing samples on the two colour, αRO vs αOX, diagram with a transitional population of three evident. Two unusual sources have been identified, a candidate radio quiet BL Lac, RX J0140.9-4130, and an extreme HBL, RX J0109.9-4020, with log (νpeak) ≈19:2. The BL Lac log(N)-log(S) relation is consistent with other samples and indicates the ROSAT All Sky Survey (RASS) could contain (2000±400) BL Lac objects. |
| first_indexed | 2024-12-17T10:28:21Z |
| format | Article |
| id | doaj.art-da5f8dd3c5f9401ba1b557fe5b6dc6c5 |
| institution | Directory Open Access Journal |
| issn | 1450-698X 1820-9289 |
| language | English |
| last_indexed | 2024-12-17T10:28:21Z |
| publishDate | 2009-01-01 |
| publisher | Astronomical Observatory, Department of Astronomy, Belgrade |
| record_format | Article |
| series | Serbian Astronomical Journal |
| spelling | doaj.art-da5f8dd3c5f9401ba1b557fe5b6dc6c52022-12-21T21:52:36ZengAstronomical Observatory, Department of Astronomy, BelgradeSerbian Astronomical Journal1450-698X1820-92892009-01-01200917971710.2298/SAJ0979007A1450-698X0979007ARadio detection of 18 RASS BL Lac objectsAnderson M.W.B.0Filipović M.D.1Sydney Observatory, Haymarket, Sydney, NSW, AustraliaUniversity of Western Sydney, Locked Bag Penrith South, NSW, AustraliaWe present the radio detection of 18 BL Lac objects from our survey of over 575 deg2 of sky. These 18 objects are located within 20'' of the X-ray position, of which 11 have a measured red-shift. All candidates are radio emitters above ~1 mJy and fall within the range of existing samples on the two colour, αRO vs αOX, diagram with a transitional population of three evident. Two unusual sources have been identified, a candidate radio quiet BL Lac, RX J0140.9-4130, and an extreme HBL, RX J0109.9-4020, with log (νpeak) ≈19:2. The BL Lac log(N)-log(S) relation is consistent with other samples and indicates the ROSAT All Sky Survey (RASS) could contain (2000±400) BL Lac objects.http://www.doiserbia.nb.rs/img/doi/1450-698X/2009/1450-698X0979007A.pdfGalaxies: activeBL Lacertae objects: generalquasars: general |
| spellingShingle | Anderson M.W.B. Filipović M.D. Radio detection of 18 RASS BL Lac objects Serbian Astronomical Journal Galaxies: active BL Lacertae objects: general quasars: general |
| title | Radio detection of 18 RASS BL Lac objects |
| title_full | Radio detection of 18 RASS BL Lac objects |
| title_fullStr | Radio detection of 18 RASS BL Lac objects |
| title_full_unstemmed | Radio detection of 18 RASS BL Lac objects |
| title_short | Radio detection of 18 RASS BL Lac objects |
| title_sort | radio detection of 18 rass bl lac objects |
| topic | Galaxies: active BL Lacertae objects: general quasars: general |
| url | http://www.doiserbia.nb.rs/img/doi/1450-698X/2009/1450-698X0979007A.pdf |
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