Radio detection of 18 RASS BL Lac objects

M. W. B. Anderson; M. D. Filipović

doi:10.2298/SAJ0979007A

Radio detection of 18 RASS BL Lac objects

M. W. B. Anderson, M. D. Filipović

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We present the radio detection of 18 BL Lac objects from our survey of over 575 degÃ‚Â² 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, average spectral index RO vs average spectral index OX, 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 (Ê‹peak) â‰ˆ 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 (2000Ã‚Â±400) BL Lac objects.

Original language	English
Pages (from-to)	7-17
Number of pages	12
Journal	Serbian Astronomical Journal
Volume	179
DOIs	https://doi.org/10.2298/SAJ0979007A
Publication status	Published - 2009

Keywords

BL Lacertae objects
galaxies
quasars

Access to Document

10.2298/SAJ0979007A

Cite this

@article{f9e09657e5234ab7a0d829dfb60dd799,

title = "Radio detection of 18 RASS BL Lac objects",

abstract = "We present the radio detection of 18 BL Lac objects from our survey of over 575 deg{\~A}‚{\^A}² 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, average spectral index RO vs average spectral index OX, 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 ({\^E}‹peak) {\^a}‰ˆ 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{\~A}‚{\^A}±400) BL Lac objects.",

keywords = "BL Lacertae objects, galaxies, quasars",

author = "Anderson, {M. W. B.} and Filipovi{\'c}, {M. D.}",

year = "2009",

doi = "10.2298/SAJ0979007A",

language = "English",

volume = "179",

pages = "7--17",

journal = "Serbian Astronomical Journal",

issn = "1450-698X",

publisher = "Astronomical Observatory",

}

TY - JOUR

T1 - Radio detection of 18 RASS BL Lac objects

AU - Anderson, M. W. B.

AU - Filipović, M. D.

PY - 2009

Y1 - 2009

N2 - We present the radio detection of 18 BL Lac objects from our survey of over 575 degÃ‚Â² 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, average spectral index RO vs average spectral index OX, 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 (Ê‹peak) â‰ˆ 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 (2000Ã‚Â±400) BL Lac objects.

AB - We present the radio detection of 18 BL Lac objects from our survey of over 575 degÃ‚Â² 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, average spectral index RO vs average spectral index OX, 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 (Ê‹peak) â‰ˆ 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 (2000Ã‚Â±400) BL Lac objects.

KW - BL Lacertae objects

KW - galaxies

KW - quasars

UR - http://handle.uws.edu.au:8081/1959.7/549843

U2 - 10.2298/SAJ0979007A

DO - 10.2298/SAJ0979007A

M3 - Article

SN - 1450-698X

VL - 179

SP - 7

EP - 17

JO - Serbian Astronomical Journal

JF - Serbian Astronomical Journal

ER -

Radio detection of 18 RASS BL Lac objects

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this