2004A&A...421...83R

Query : 2004A&A...421...83R

2004A&A...421...83R - Astronomy and Astrophysics, volume 421, 83-89 (2004/7-1)

Optical variability of PKS 0736+017.

RAMIREZ A., DE DIEGO J.A., DULTZIN-HACYAN D. and GONZALEZ-PEREZ J.N.

Abstract (from CDS):

We present BVR photometric observations of the blazar PKS 0736+017. These observations were carried out with three telescopes in Mexico and two in Spain between December 1998 and April 2003. PKS 0736+017 shows remarkable variation at different timescales and amplitudes. Maximum brightness was detected on December 19, 2001 (B=14.90±0.01, V=14.34±0.01, and R=13.79±0.01). A peculiar tendency to redden with increased brightness was detected throughout our observations. Moreover, in one season a good correlation between flux level and spectral slope is shown. This anomalous behaviour cannot be described by common flare models of blazars. The flux vs. spectral slope correlation observed in this and other blazars is worth further study.

Abstract Copyright: ∼

Journal keyword(s): Blazar - PKS 0736+017 - radiation mechanisms - variability

Simbad objects: 7

Full paper

View the references in ADS

Number of rows : 7

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2023	#notes
1	QSO B0235+1624	BLL	02 38 38.93010450	+16 36 59.2745528	16.46	15.50	15.92	~	1506	2
2	QSO J0738+1742	BLL	07 38 07.39375312	+17 42 18.9981506	16.76	16.22	15.78	~	969	1
3	QSO B0736+01	QSO	07 39 18.03389906	+01 37 04.6177501	16.90	16.47	16.19	~	671	1
4	3C 279	Bla	12 56 11.16657958	-05 47 21.5251510	18.01	17.75	15.87	~	2982	2
5	7C 1308+3236	BLL	13 10 28.66385420	+32 20 43.7828340	15.61	15.24	17.91	~	830	1
6	3C 345	QSO	16 42 58.80997043	+39 48 36.9939552	16.81	16.59	16.84	~	1681	2
7	3C 446	BLL	22 25 47.25929101	-04 57 01.3907626	18.83	18.39	16.3	~	814	1

To bookmark this query, right click on this link: simbad:objects in 2004A&A...421...83R and select 'bookmark this link' or equivalent in the popup menu